Use of UV sterilization irradiation system, method for UV sterilization irradiation treatment of saline water using UV sterilization irradiation system, and UV sterilization irradiation system for treatment of saline water

Abstract

The invention discloses application of a UV sterilization irradiation system, a method for performing UV sterilization irradiation treatment on saline water by using the UV sterilization irradiation system and the UV sterilization irradiation system for treating saline water. The UV sterilization irradiation system comprises a UV sterilization irradiation device and an air cooling system.

Description

Technical Field

[0001] The invention relates to the use of a UV sterilizing irradiation system for treating salt water, a method for treating salt water with UV sterilizing irradiation, and a UV sterilizing irradiation system for treating salt water. Background Art

[0002] Brines are often used in the food industry, for example, in connection with the infusion of proteins containing salt, sugar and seasonings. Brines can be used, for example, to tenderize and / or moisten meat. In the production of cheeses, such as salty and / or pickled cheeses such as feta, domiati, halloumi and mozzarella, the cheeses can usually be ripened in brine in airtight or semi-permeable containers. This process imparts good stability to the cheese, inhibiting bacterial growth even in warm climates.

[0003] In order to ensure that the brine is not contaminated, pasteurization of the brine is often used to kill microorganisms in the brine, such as bacteria, mold, spores, protozoa or viruses. However, pasteurization can present problems due to the heating involved in the process. In general, the heating of the brine introduces cooling requirements. In addition, the heating of the brine may further introduce the need for cleaning of the equipment, as proteins that stick to the equipment due to the heating during pasteurization are more difficult to remove. In addition, when pasteurization is used as a means for killing microorganisms, additional infrastructure is required to provide hot water.

[0004] Ultraviolet (UV) reactor instruments have previously been used to pasteurize liquid foods. Examples of such instruments can be found in US2002 / 096648, which discloses a reactor for irradiating ultraviolet light into a fluid reaction medium. An irradiation chamber is connected to an inlet and an outlet, which allows the reaction medium to flow through the reactor while being exposed to ultraviolet light.

[0005] When using ultraviolet light source in UV sterilization irradiation system, about 30% to 38% of the energy emitted by ultraviolet (UV) light source is emitted in the form of UV light. The remaining energy is emitted in the form of visible light and thermal radiation, wherein most of the remaining energy in the current remaining energy is emitted in the form of thermal radiation. In the conventional system for UV treatment described in, for example, US2002 / 096648, most of the energy provided from the light source is transferred to the fluid, and the treated fluid will thus normally absorb and dissipate the energy provided to it in the form of, for example, heat. However, if the liquid is recycled and continuously heated and / or exposed to very high energy treatment, the heat absorbed in the conventional setting causes the need to cool the liquid subsequently. This is expensive and troublesome, and due to the increased complexity of the additional infrastructure in the system, it often brings the risk of re-contamination. Some liquids may also be sensitive to temperature, wherein a temperature change of 10 degrees Celsius to 20 degrees Celsius may cause an undesirable change in the quality of the liquid.

[0006] Air cooling systems can be used to cool light sources, electronic devices, and processed liquids in UV sterilization irradiation systems. The air used to cool electronic equipment and light sources is often exchanged with the surrounding environment. This provides effective and inexpensive cooling for UV sterilization irradiation systems.

[0007] However, in the ambient air surrounding the UV sterilization irradiation system, especially in food production, there are often high levels of salt, detergents, grease or other aerosols. These factors, usually combined with high humidity, may cause severe corrosion or coating inside the UV sterilization irradiation system, which may be destructive to the structure and function of the system. In particular, this situation occurs when processing salt water, because the salt water to be processed is usually stored in a non-airtight container located near the UV sterilization irradiation system, or even in an open container. Therefore, the steam with a high salt concentration from the salt water container will fill the room where the container is placed.

[0008] In order to cool the electronic equipment and light sources in the UV germicidal irradiation system while protecting the metal and electronic components and the light sources from corrosion, the UV germicidal irradiation system can be located in a room different from the room where the saline solution is maintained. Alternatively, the saline can be maintained in an airtight container, thereby protecting the environment around the saline container. Alternatively, the ambient air can be filtered using a filter for removing inappropriate aerosols and particles, such as salt particles, before using the ambient air to cool the UV germicidal irradiation system. However, in practice it may be difficult to keep the saline container and the UV germicidal irradiation system in separate rooms because the saline needs to be effectively transferred between the two systems; or it is difficult to effectively ensure that the saline remains in an airtight container; or it is difficult to filter the ambient air finely enough because the filter is often clogged in a highly polluted environment, requiring constant and extensive maintenance.

[0009] Therefore, a new optimization solution is needed. Summary of the invention

[0010] In a first aspect, the present invention discloses the use of a UV sterilizing irradiation system for treating salt water, wherein the UV sterilizing irradiation system comprises a UV sterilizing irradiation device and an air cooling system. In a second aspect, the present invention discloses a UV sterilizing irradiation system for treating salt water.

[0011] The UV germicidal irradiation device according to the first and second aspects is positioned inside a first room having ambient air surrounding the UV germicidal irradiation device, the ambient air having at least 10 μg salt / m 3 Average salt-air concentration of the air.

[0012] The UV germicidal irradiation device comprises at least one tube having:

[0013] o an inlet section, the inlet section comprising a tube inlet through which saline enters the tube;

[0014] o an outlet section, the outlet section comprising a tube outlet through which the brine leaves the tube; and

[0015] o A fluid path extending along the longitudinal axis from the inlet section to the outlet section.

[0016] The UV germicidal irradiation device also includes one or more light sources configured to illuminate the fluid path, wherein the one or more light sources emit light having at least one wavelength within a wavelength range between 180 nm and 315 nm.

[0017] Furthermore, the UV germicidal irradiation device comprises one or more internal compartments, wherein at least the one or more light sources are confined inside the one or more internal compartments, wherein the one or more internal compartments are configured to prevent ambient air from entering the one or more internal compartments.

[0018] The air cooling system is configured to utilize outside air from outside the first room for:

[0019] A. directly cooling one or more light sources by providing outside air as cooling air to one or more internal compartments, or

[0020] B. Indirectly cooling one or more light sources by an air cooling system, the air cooling system comprising an internal air duct system accommodating internal recirculating air, wherein the recirculating air is provided to one or more internal compartments as cooling air for cooling the one or more light sources, and wherein the external air is cooled recirculating air.

[0021] The outside air has less than 5 μg salt / m 3 The salt concentration of the air.

[0022] Alternatively or additionally, the salt concentration of the outside air is at least 10%, such as at least 20%, such as at least 30%, such as at least 40%, such as at least 50%, such as at least 60%, such as at least 70%, such as at least 80%, such as at least 90%, such as at least 95% lower than the salt concentration of the ambient air.

[0023] In a third aspect, a method for UV sterilization irradiation treatment of salt water using a UV sterilization irradiation system is disclosed, wherein the UV sterilization irradiation system comprises a UV sterilization irradiation device and an air cooling system. The UV sterilization irradiation system is as described in combination with the first aspect and the second aspect.

[0024] The third method includes:

[0025] Provide saline to a UV germicidal irradiation device located in a first room, the first room having ambient air surrounding the UV germicidal irradiation device, the ambient air having at least 10 μg salt / m 3 Average salt-air concentration of the air;

[0026] ·Performing UV sterilization irradiation treatment on the salt water in a UV sterilization irradiation device;

[0027] providing outside air from outside the first room to the air cooling system; and

[0028] • Cooling one or more light sources inside one or more internal compartments directly or indirectly with external air by means of an air cooling system.

[0029] The outside air from outside the first room has less than 5 μg salt / m 3 The salt concentration of the air.

[0030] Alternatively or additionally, the salt concentration of the outside air is at least 10%, such as at least 20%, such as at least 30%, such as at least 40%, such as at least 50%, such as at least 60%, such as at least 70%, such as at least 80%, such as at least 90%, such as at least 95% lower than the salt concentration of the ambient air.

[0031] Direct cooling of the one or more light sources is obtained by providing one or more internal compartments with outside air as cooling air. Indirect cooling of the one or more light sources is obtained by providing one or more internal compartments with recirculated air as cooling air for cooling the one or more light sources and cooling the recirculated air by outside air.

[0032] Performing the UV germicidal irradiation treatment on the saline in the UV germicidal irradiation device and cooling the one or more light sources inside the one or more internal compartments may be performed simultaneously.

[0033] Brine is understood to be a water-based solution containing a high concentration of salt. Examples of salts used in brine are sodium chloride, calcium chloride, bromide and formates. Brine may refer to a water-based solution having a salt solution in the range from about 3.5% w / w salt to about 26% w / w salt, such as a salt solution in the range of 8% w / w to 25% w / w salt. The temperature at which these concentrations are measured is typically around room temperature. Alternatively, the temperature may vary between 8 degrees Celsius and 23 degrees Celsius.

[0034] Xμg salt / m 3 The average salt concentration of air is the average salt concentration of air at 1 m 3 The salt content of the air is X μg on average in a volume of . Examples of salt content found in the air in a room with salt water are sodium chloride, calcium chloride, bromide and formates. Therefore, at least 10 μg salt / m 3 The salt concentration of the air means a combined salt concentration of at least 10 μg salt / m 3 Air, where the combined salt concentration may contain more than one type of salt. The salt concentration will also include any minor salt components that are normally prevalent in the air.

[0035] Outside air refers to air that is different from the air inside the first room. This can be atmospheric air from outside the building where the UV germicidal irradiation device is located. Typically, the outside air contains significantly less salt than the air inside the first room. Outside air can also refer to air that is substantially isolated from the air inside the first room to the extent that mixing between the two volumes of air does not occur at a level that would affect the critical quality parameters of either volume.

[0036] By the use of a UV germicidal irradiation system for treating salt water as described above, wherein external air is used directly or indirectly for cooling the UV germicidal irradiation device, an improved solution is obtained which ensures both effective cooling of the light source and stability of the electronic components in the UV germicidal irradiation device, while reducing or even avoiding corrosion problems. The use of a UV germicidal irradiation system is also an economically very attractive alternative compared to other solutions, including:

[0037] o Transferring saline solution between rooms,

[0038] o Completely shield containers containing saline water to avoid high salt content in the ambient air around the UV GIR, and / or

[0039] o Use high-quality, expensive and high-maintenance filters to remove unwanted aerosols and particles, such as salt particles, from the ambient air.

[0040] The simplicity of using air from outside the first room provides an inexpensive solution. Outside air can be provided to the UV germicidal irradiation device for cooling the light source directly or indirectly. However, the system is a closed system in the sense that ambient air with a high salt concentration is prevented from entering the system.

[0041] Treating salt water with UV light is also referred to as treating salt water with cold pasteurization. One of the advantages of using light radiation as a means of cold pasteurization is that it is a very energy-efficient way to partially sterilize. Pasteurization is not limited to partially sterilizing substances, and in particular liquids, at a certain temperature and exposure period, destroying harmful organisms without causing significant chemical changes to the substances, but also covers cold pasteurization, which is a process in which heat is avoided as the main method of destroying harmful organisms without causing significant chemical changes to the substances. Wherein, avoidance does not mean exclusion, but reduction. The fluid path is generally designed to provide a high surface area to volume ratio, thereby increasing the exposure of light energy per unit volume and reducing the self-shading effect from the salt water being treated. In this way, light can be used to treat salt water when the material forming the fluid path is at least partially transparent to the radiation of light. The fluid path is generally designed to provide a high surface area to volume ratio, thereby increasing the exposure of light energy per unit volume and reducing the self-shading effect from the salt water being treated. In this way, light may be used to treat salt water when the material forming the fluid path is at least partially transparent to radiation of light.

[0042] In one or more examples, one or more interior compartments have an interior compartment air pressure that is higher than the ambient air pressure of the ambient air in the first room, thereby preventing ambient air from entering the one or more interior compartments. By making the air pressure in the interior compartment higher than the air pressure of the ambient air, ambient air is prevented from entering the one or more interior compartments. The one or more interior compartments may also / alternatively form a substantially airtight system.

[0043] In one or more examples, the air cooling system includes one or more fans configured to transfer cooling air into the UV germicidal irradiation device. The one or more fans can be configured to rotate at an adjustable speed.

[0044] If the temperature of the outside air is lower than normal, the outside air cools the light source more effectively, directly or indirectly. The adjustable speed can therefore be reduced to obtain the same cooling efficiency as in the case of a higher outside air temperature. This ensures a long life of the light source in the case where the light source relies on uniform cooling independent of the outside air temperature.

[0045] Generally speaking, an increase in the adjustable speed will result in an increase in cooling of one or more light sources. Likewise, a decrease in the adjustable speed will result in a decrease in cooling of one or more light sources. Temperature regulation of the outside air is not necessary, but may be advantageous if the temperature of the outside air varies depending on the temperature of the area from which the outside air is taken. If the outside air is taken from outside the building in which the UV germicidal irradiation system is located, this is particularly true when the building is located in a climate with large temperature variations and / or large day and night temperature differences.

[0046] A UV germicidal irradiation device will typically experience an increase in the temperature inside the internal compartment during use due to the heating of different components in the device. Therefore, the requirements for the external air temperature may change during the use of the UV germicidal irradiation system.

[0047] It may also be necessary to reduce / increase the light output during use. It may also be used to save energy or to protect the saline solution and prevent it from overexposure. When the light output is reduced, less cooling is usually required.

[0048] In one or more examples, one or more light sources include an adjustable light source output. Changing the light source output can optimize the UV treatment. The interaction between the adjustment of the light source output and the adjustment of the outside air temperature is often used to promote the optimal state of the UV germicidal irradiation device.

[0049] In one or more examples, the UV germicidal irradiation system includes a temperature sensor for measuring the temperature of the cooling air entering the UV germicidal irradiation device. The measurement of the cooling air temperature can be used together with the light source output to continuously adjust the speed of the fan to provide an optimal temperature inside the UV germicidal irradiation device.

[0050] In one or more examples, the UV germicidal irradiation device further comprises one or more perforated plates, which define one or more internal compartments. The perforated plates can be used to help ensure positive pressure inside the UV germicidal irradiation device and help guide air flow through the perforated plates and between them and out of the UV germicidal irradiation device.

[0051] In one or more examples, the one or more perforated panels are configured to ensure that the interior compartment air pressure is higher than the ambient air pressure of the ambient air in the first room.

[0052] In one or more examples, the UV germicidal irradiation device includes a second internal compartment having a second internal compartment air pressure, the second internal compartment being positioned between one or more internal compartments containing one or more light sources and the air cooling system, wherein the second internal compartment air pressure is higher than the first mentioned internal compartment air pressure. Thus, external air is effectively directed through the internal compartment.

[0053] In one or more examples, the air cooling system includes an inlet air duct having an inlet duct opening configured for positioning outside of the first room. The inlet air duct may be a conventional ventilation shaft.

[0054] In one or more examples, the air cooling system includes one or more coarse filters configured to filter larger particles from the cooling air before the cooling air enters the UV germicidal irradiation device. The one or more coarse filters can be positioned along the inlet air duct. Therefore, before entering the air cooling system, the outside air may pass through the coarse filters.

[0055] In one or more examples, the air cooling system includes a dehumidifier configured to reduce the humidity of the cooling air before the cooling air enters the UV germicidal irradiation device. The dehumidifier can be positioned along the inlet air duct. Therefore, before entering the air cooling system, the outside air may pass through the dehumidifier.

[0056] In one or more examples, the UV germicidal irradiation device includes an outlet opening through which external air exits the UV germicidal irradiation device as exhaust gas. The exhaust gas can exit through the outlet opening and enter the first room. Alternatively, the UV germicidal irradiation device may include an outlet air duct having an outlet opening, wherein the outlet air duct extends to a position outside the first room, whereby the exhaust gas is directed to a position outside the first room.

[0057] In one or more examples, the air cooling system includes one or more particle filters configured to filter fine particles from the external air and / or internal recirculated air before the external air and / or internal recirculated air enters the UV germicidal irradiation device. This is considered an additional part of the system.

[0058] In one or more examples, the system further comprises a temperature regulation system comprising a temperature sensor configured to measure the temperature of outside air and / or recirculated air and / or cooling air entering the air cooling system and an air conditioning system, wherein the air conditioning system is configured to: 1) heat the cooling air entering one or more internal compartments if the temperature of the outside air and / or recirculated air and / or cooling air measured by the temperature sensor is below a first preset temperature value, and / or 2) cool the air entering one or more internal compartments if the temperature of the outside air and / or recirculated air and / or cooling air measured by the temperature sensor is above a second preset temperature value. By means of the temperature regulation system, improved control of the brine being treated is obtained because the temperature of the cooling system and the cooling air is highly controlled. This may be relevant in environments where the outside air temperature varies due to, for example, seasonal climate changes.

[0059] The temperature regulation system can be an air-liquid heat exchange system. Therefore, in one or more examples, the air cooling system is connected to the air-liquid heat exchange system, and the air-liquid heat exchange system includes one or more cooling liquid containers for accommodating cooling liquid, wherein the air-liquid heat exchange system is configured to heat or cool the outside air before the outside air enters the UV sterilizing irradiation device. The air-liquid heat exchange system can be positioned along the inlet air duct. As an alternative to air-liquid heat exchange, an electric temperature regulation system can be used. Both types of temperature regulation systems are conducive to regulating the temperature of the outside air in a climate where large temperature changes occur and / or there is a large day and night temperature difference and / or a large humidity difference occurs. Thus, greater stability of the UV sterilizing irradiation system can be obtained. In addition, regulating the temperature of the outside air before the outside air enters the air cooling system can also interact with the fan in the air cooling system, thereby reducing the need to change the adjustable speed.

[0060] In one or more examples, the exhaust and / or recirculated air is directed through an air-to-liquid heat exchange system, thereby heating the incoming outside air. The heat exchange allows the exhaust and / or recirculated air to cool before re-entering one or more interior compartments.

[0061] In one or more examples, the UV germicidal irradiation system includes a top side, and wherein the air cooling system is positioned as part of the top side. The UV germicidal irradiation system may also include additional sides, including a bottom side, a first side, a second side, a third side, and a fourth side.

[0062] In one or more examples, the fluid path is a coil section in the form of a spiral tube. The fluid path of one or more tubes can utilize the flow state generated when the medium travels in the spiral tube forming the fluid path. The flow state in the fluid path can include one or more vortices, and one or more vortices utilize centrifugal force to produce an axial secondary flow (e.g., Dean vortex) on a primary flow to enhance the portion of the liquid that is transported to the tube surface exposed to the UV light emitted by the light source and therefore exposed to the UV light at the tube surface. The fluid motion through the fluid path can have a double vortex pattern consistent with the Dean vortex. This provides axial flow in the fluid path, thereby ensuring that a large volume of fluid is in contact with the surface. This can reduce the distribution of light energy exposure per unit volume / surface area, and reduce the self-shielding effect from the treated brine. Therefore, in one or more examples, the fluid motion through the fluid path generates Dean vortices, laminar flow or turbulence in the liquid. This can be obtained using a coiled spiral fluid path in particular. The advantage of using Dean vortices, laminar flow or turbulent flow in a double helix pattern is that Dean vortices, laminar flow or turbulent flow can increase the volume in contact with the surface, thereby increasing light energy exposure and reducing self-shading effects from the brine being treated. Therefore, less energy is required to treat the liquid.

[0063] In one or more examples, the UV germicidal irradiation device also includes at least one elongated supporting structure, wherein the spiral tube is coiled around the elongated supporting structure along the longitudinal axis of the fluid path. The advantage of using the supporting structure to coil the spiral tube is that if the tube is, for example, made of a flexible material, the supporting structure stabilizes the spiral tube. The supporting structure can therefore provide stability for the coil. In addition, the supporting structure can have other advantages, such as by helping to enhance the amount of light radiated to the spiral tube by, for example, reflectivity. The elongated supporting structure can include a solid supporting structure, a columnar mesh, or anything in between. Therefore, in one or more examples, a plurality of supporting structures are made of or covered with a reflective material, such as a reflective polymeric material or a polished metal.

[0064] In one or more examples, the UV germicidal irradiation device includes one or more light source filters, which are positioned between one or more light sources and the fluid path of at least one tube, wherein the one or more light source filters are configured to prevent light with a wavelength above 315 nm from reaching the fluid path of at least one tube.

[0065] "Preventing light with wavelengths above 315 nm from reaching the fluid path of one or more tubes" means that the one or more filters attenuate light above 315 nm by at least 10 times, such as at least 100 times, such as at least 1000 times, such as at least 10000 times. One of the advantages of using one or more filters is that photo-oxidation due to higher wavelengths can be avoided. In addition, the filters can prevent hot air from contacting the fluid path of the tube, thereby avoiding heating of the brine.

[0066] In one or more examples, the UV germicidal irradiation device includes a plurality of tubes arranged in one or more tube sections and a plurality of light sources arranged in one or more light source sections, wherein the tube sections and the light source sections are alternately arranged in a horizontal direction or a vertical direction.

[0067] The light source section may be separated from the tube section. The separation of the light source section and the tube section may potentially prevent leakage due to injection / dispersion of the cooling air flow from the cooling system.

[0068] The structure that separates the light source section and the tube section can be combined and / or include a UV permeable material area at a position that allows a large amount of UV radiation from the light source to pass from the light source section into the tube section. Therefore, in one or more examples, the light source section is separated from the tube section by one or more UV permeable material pieces. The material can also be partially UV permeable so that the transmittance varies with the material. The division into different sections by UV permeable material pieces allows the system to be divided into different thermal zones according to the type of section. Since the light source usually radiates heat to the surroundings during use, the section with the light source is usually heated to a higher temperature than the section with the tube during use. In one or more examples, the light source operates at a light source temperature between 0°C and 120°C, such as between 20°C and 60°C, such as between 30°C and 50°C.

[0069] In one or more examples, each light source box also includes one or more of one or more filters that prevent light with wavelengths above 315 nm from reaching the fluid path of the one or more tubes.

[0070] In one or more examples, at least one tube is made of a polymer material or a quartz glass material, which is transparent to ultraviolet light at least at a wavelength between 250 nm and 260 nm, such as between 240 nm and 270 nm, such as between 230 nm and 280 nm, such as between 210 nm and 290 nm, such as between 195 nm and 305 nm, such as between 180 nm and 315 nm. A polymer material that is at least transparent to ultraviolet light means that at least 5% of UV light of a given wavelength is allowed to pass through 0.1 mm of the material. In one or more examples, the polymer material has an ultraviolet transmittance (UVT) of at least 5%, such as at least 10%, such as at least 15% at a wavelength between 250 nm and 260 nm, wherein the UVT is measured with a path length of 0.1 mm.

[0071] In one or more examples, at least one tube is made of a polymer material selected from amorphous fluoropolymer (AF), polypropylene (PP), fluorinated ethylene propylene (FEP), polyethylene (PE), polytetrafluoroethylene (PTFE), perfluoroalkoxyalkane (PFA), polyvinylidene fluoride (PVDF), nylon, rubber, latex, acrylic glass, polycarbonate (PC), polystyrene, acrylonitrile butadiene styrene (ABS), quartz material or similar materials and / or combinations thereof.

[0072] In one or more examples, at least one tube is made of an amorphous fluoropolymer (AF). Amorphous fluoropolymers (AF) are a family of amorphous fluoroplastics. These materials are similar to other amorphous polymers in terms of optical clarity and mechanical properties, including strength. These materials are comparable to other fluoroplastics in terms of their performance over a wide temperature range, in terms of having excellent chemical resistance, and in terms of having outstanding electrical properties. AF polymers differ from other fluoroplastics in that AF polymers are soluble in selected solvents, have high air permeability, high compressibility, high creep resistance, and low thermal conductivity. AF polymers have the lowest dielectric constant of any known solid polymer. Compared to many other known polymers, AF polymers have a low refractive index.

[0073] In one or more examples, one or more light sources are selected from mercury vapor light sources, xenon light sources, light emitting diodes (LEDs), pulsed LEDs, or low-pressure germicidal light sources, such as low-pressure mercury vapor light sources. Mercury vapor light sources are gas discharge light sources that use an arc through vaporized mercury to generate light. Arc discharge can be confined to a small fused quartz arc tube. Xenon arc light sources are a special type of gas discharge light source, an electric lamp that generates light by passing electricity through ionized xenon gas at high voltage. Xenon arc light sources produce bright white light that closely simulates natural light. Special types of xenon light sources are used in automobiles. These are actually metal halide light sources, in which the xenon arc is only used during startup. Light emitting diodes (LEDs) are dual-lead semiconductor light sources. It is a pn junction diode that emits light when enabled. When an appropriate voltage is applied to the leads, electrons can recombine with electron holes in the device, thereby releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photons) is determined by the energy band gap of the semiconductor. LEDs are usually very small (less than 1 mm), and integrated optical components can be used to shape the radiation pattern. In one or more examples, the light source is a metal halide light source. A metal halide light source is an electric light source that produces light by passing an electric arc through a gas mixture of vaporized mercury and metal halides. A metal halide light source is a high-intensity gas discharge light source. A metal halide light source is similar to a mercury vapor light source, but contains additional metal halide compounds in a quartz arc tube, which can improve the efficiency of the light and the visual reproduction of colors.

[0074] In one or more examples, the one or more filters are selected from a bandpass filter, a notch filter, or a combination of both.

[0075] In one or more examples, the UV germicidal irradiation system is configured to inactivate or reduce biological contaminants by at least 1-Log 10 , such as at least 2-Log 10 , such as at least 3-Log 10 , such as at least 4-Log 10 , such as at least 5-Log 10 , such as at least 6-Log 10 order of magnitude.

[0076] Cheese (including yellow and white cheese) is sometimes placed in the brine pool for a long time. When some cheese is taken out of the pool, new cheese is added, which may introduce contaminants into the brine. Contamination may also come from the surrounding environment because the brine pool is open to the ambient air. Therefore, an additional filtration step can be combined with the UV sterilization irradiation system. This additional filtration can be a kidney-shaped loop device with a pasteurizer, a microfiltration system or a UV system. Recirculation to the same UV sterilization irradiation system is also an option. By using an additional filtration step, contaminants can be reduced and kept below a predetermined limit. Since cheese is usually added at a low frequency and the brine pool is usually quite large, the contamination rate (CFU / mL each time) is low relative to other types of processes, such as "conventional" pasteurization. Therefore, the logarithmic decline through the UV sterilization irradiation system may be relatively low, but it is still highly relevant. Typically, cheese producers are willing to spend 3 to 4 weeks or even several months at the beginning of the UV sterilization irradiation process to reduce contaminants in the brine pool, because the UV sterilization irradiation system described herein will allow cheese producers to replace more maintenance-heavy systems.

[0077] Determining the size of the UV sterilization irradiation system can include selecting the optimal size of the spiral tube, and / or adjusting the flow state of the liquid in the winding fluid path inside the spiral tube, and / or adjusting the light source intensity. The liquid food flows through the spiral tube at a certain flow rate. In one or more examples, the flow rate measured in milliliters per minute is between 200ml / min and 80000ml / min. The flow rate depends on the total length of the spiral tube and the pitch of the spiral tube, i.e., how many turns the tube can spirally rotate in a given area. Thus, the flow rate measured in milliliters per minute can be between 200 ml / min and 80,000 ml / min, or between 500 ml / min and 70,000 ml / min, or between 500 ml / min and 56,000 ml / min, or between 500 ml / min and 35,000 ml / min, or between 500 ml / min and 23,000 ml / min, or between 750 ml / min and 23,000 ml / min, or between 1000 ml / min and 23,000 ml / min, or between 1200 ml / min and 23,000 ml / min, or between 200 ml / min and 6,000 ml / min, or between 500 ml / min and 4,000 ml / min, or between 800 ml / min and 2000 ml / min, or between 900 ml / min and 1100 ml / min. The predetermined flow velocity may be a flow velocity between 1 m / s and 15 m / s, such as between 1 m / s and 10 m / s, such as between 3 m / s and 8 m / s, such as between 5 m / s and 7 m / s. The flow velocity may be defined as the mass flow rate divided by the fluid density and the internal cross-sectional area of ​​the coil. Thus, the flow velocity is a vector field used to mathematically describe the motion of the fluid. The full length of the flow velocity is called the flow velocity. The flow velocity in a fluid is a vector field that provides the velocity of the fluid at a specific time and location. The flow velocity is also referred to as macro velocity.

[0078] The one or more light sources may have a predetermined power output. The predetermined power output may be 100 W / m measured at 254 nm. 2 With 1200W / m 2 The power output of the light source intensities between . BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Various examples are described below with reference to the accompanying drawings. The same reference numerals always refer to the same elements. Therefore, the same elements will not be described in detail for the description of each figure. It should also be noted that the drawings are intended only to facilitate the description of the examples. The drawings are not intended to serve as an exhaustive description of the claimed invention or as a limitation on the scope of the claimed invention. In addition, the illustrated examples do not need to have all the aspects or advantages shown. The aspects or advantages described in conjunction with a particular example are not necessarily limited to that example, and may be practiced in any other example, even if not illustrated as such, or even if not so explicitly described.

[0080] Figure 1 Illustration of a UV germicidal irradiation system for treating salt water.

[0081] FIG. 2A to FIG. 2B The diagram shows Figure 1 Examples of tubes and light sources used in a UV germicidal irradiation device.

[0082] FIG. 3A to FIG. 3B The diagram shows Figure 1 Examples of tubes and light sources used in a UV germicidal irradiation device.

[0083] 4A to 4D An example of a UV germicidal irradiation system positioned inside a first room is illustrated. DETAILED DESCRIPTION

[0084] Exemplary examples will now be described more fully below with reference to the accompanying drawings. In this regard, this example may have different forms and should not be construed as being limited to the description set forth herein. Therefore, each example is described below only by reference to the accompanying drawings to explain various aspects. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Expressions such as "at least one of..." when following a list of elements modify the entire list of elements rather than modifying the individual elements of the list.

[0085] In the accompanying drawings, for the sake of clarity and easy description of multiple layers and regions, its thickness is illustrated in an amplified manner. When a layer, region, element or plate is referred to as being "on" another layer, region, element or plate, the layer, region, element or plate may be directly located on another layer, region, element or plate, or there may be an intermediate layer, region, element or plate between the layer, region, element or plate and another layer, region, element or plate. On the contrary, when a layer, region, element or plate is referred to as "directly located on another layer, region, element or plate", there may not be an intermediate layer, region, element or plate between the layer, region, element or plate and the another layer, region, element or plate. In addition, when a layer, region, element or plate is referred to as being "below" another layer, region, element or plate, the layer, region, element or plate may be directly located below another layer, region, element or plate, or there may be an intermediate layer, region, element or plate between the layer, region, element or plate and another layer, region, element or plate. In contrast, when a layer, region, element or panel is referred to as being “directly under” another layer, region, element or panel, there are no intervening layers, regions, elements or panels between the layer, region, element or panel and the other layer, region, element or panel.

[0086] For ease of description, spatially relative terms such as "lower" or "bottom" and "upper" or "top", "below", "below", "less", "above" and the like may be used herein to describe the relationship between one element or component and another element or component as illustrated in the accompanying drawings. It will be understood that spatially relative terms are intended to cover different orientations of the device when in use or operation in addition to the orientation depicted in the accompanying drawings. For example, in the case where the device illustrated in the accompanying drawings is turned over, the element described as being located on the "lower" side of other elements or being located "below" or "below" another element will be oriented to be located on the "upper" side of other elements or being located "above" another element. Therefore, the illustrative term "below" or "below" may include both the "lower" orientation position and the "upper" orientation position, depending on the specific orientation of the figure. Similarly, if the device in one of the figures in the drawings is turned over, the element described as being located "below" or "below" other elements will be oriented to be located "above" other elements. Therefore, the exemplary term "below" or "below" may include both the above and below orientations, and therefore, the spatially relative terms may be interpreted differently depending on the orientation described.

[0087] Throughout the specification, when an element is referred to as being “connected” to another element, the element is “directly connected” to the other element or “electrically connected” to the other element with one or more intervening elements interposed therebetween.

[0088] The terms used herein are only for the purpose of describing specific examples and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "a kind of" and "the" as used herein are intended to include plural forms, i.e., include "at least one". "At least one" should not be interpreted as limiting "one" or "a kind". It will also be understood that when used in this specification, the terms "include", "comprise", "include", and / or "comprising" indicate the presence of the described features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups thereof.

[0089] It will be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, the "first element" discussed below may be referred to as the "second element" or the "third element", and without departing from the teachings of this document, the "second element" and the "third element" may also be referred to as the "first element".

[0090] As used herein, "about" or "approximately" is inclusive of the stated value and means within an acceptable range of deviation from a particular value as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0091] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It will also be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted as an idealized or overly formal meaning unless explicitly defined in this specification.

[0092] Exemplary examples are described herein with reference to cross-sectional views of schematic diagrams as idealized examples, wherein the same reference numerals refer to the same elements throughout the specification. Therefore, variations in the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are expected. Therefore, the examples described herein should not be interpreted as being limited to the specific shapes of the regions as illustrated herein, but rather include shape deviations, for example, caused by manufacturing. For example, an area illustrated or described as flat may have rough features and / or nonlinear features. In addition, the illustrated sharp angles may be rounded. Therefore, the areas illustrated in the figures are schematic in nature, and their shapes are not intended to illustrate the precise shapes of the illustrated regions, and are not intended to limit the scope of the present claims. In order to specifically describe the exemplary examples of the present disclosure, some parts not related to the description may not be provided.

[0093] Figure 1 A UV germicidal irradiation system 9 for treating salt water is shown. The UV germicidal irradiation system 9 includes a plurality of sides, including a first side 11, a second side 12, a third side 13, a fourth side 14, a top side 15, and a bottom side 16. A connection device is typically provided on one of the sides for providing salt water to the UV germicidal irradiation device 10. Figure 1 In the figure, the brine receiving opening 17 is shown as a simple circle on the first side 11. A door panel 28 is usually provided on one of the sides to provide an entrance to the interior of the UV germicidal irradiation device 10. Figure 1 , the door panel 28 is shown as a simple square on the second side 12 .

[0094] The UV sterilization irradiation system 9 has an air cooling system 300. The air cooling system 300 is configured to cool the light source 200. Figure 1 In the illustrated embodiment, the air cooling system 300 is arranged to constitute the top flange 15 of the UV germicidal irradiation system 9. Other locations may also be used.

[0095] The air cooling system 300 includes one or more openings 310 for providing air into the air cooling system 300 and / or allowing air to exit the air cooling system 300. Figure 1 , two openings 310 are illustrated.

[0096] like Figure 2A and Figure 2BAs shown in FIG. 1 , at least one tube 100 is provided inside the UV germicidal irradiation device 10. The tube 100 includes an inlet section 102 having a tube inlet 103, through which saline enters the tube 100. The tube 100 also includes an outlet section 106 having a tube outlet 107, through which saline leaves the tube 100. Between the inlet section 102 and the outlet section 106 is a fluid path 104 extending along the longitudinal axis L. Figure 2A In FIG, the fluid path 104 is shown extending along a vertical plane. Figure 2B , the fluid path 104 is shown extending along a horizontal plane.

[0097] exist FIG. 2A to FIG. 2B In the embodiment of the present invention, the tube 100 is shown in the form of a spiral tube. However, straight tubes or tubes with alternative shapes are also conceivable.

[0098] exist FIG. 2A to FIG. 2B In the embodiment shown in FIG. 1 , the tube 100 is wrapped around a support structure 114 to provide stability to the tube 100. The support structure 114 may be omitted if, for example, the tube material is rigid enough to maintain its position.

[0099] The UV germicidal irradiation device 10 also includes one or more light sources 200 configured to illuminate the fluid path 104. FIG. 2A to FIG. 2B , the light source 200 is positioned on each side of the tube 100. The light source 200 emits light having at least one wavelength within a wavelength range between 180 nm and 315 nm.

[0100] exist Figure 2A In the embodiment of the present invention, a light source filter 230 is provided between the light source 200 and the tube 100. The light source filter 230 is configured to prevent light with a wavelength higher than 315 nm from reaching the fluid path 104. The filter 230 is not mandatory.

[0101] like FIG. 3A to FIG. 3B As shown in FIG. 1 , the light source 200 can be arranged in a light source section 210, wherein each light source section 210 includes a plurality of light sources 200. The advantage of using the light source section 210 is that a plurality of light sources 200 can be removably arranged in the UV germicidal irradiation device 10. The light source sections 210 can be positioned so that they can be removed through one of the sides. The light source section 210 can have an opening for allowing cooling air to pass through.

[0102] Likewise, a plurality of tubes 100 may be arranged in tube segments 110. Tube segments 110 may be removably arranged in UV germicidal irradiation device 10. Tube segments 110 may be positioned so that they may be removed through one of the sides, possibly the same side as light source segment 210.

[0103] like FIG. 3A to FIG. 3B As shown in FIG. 1 , the tube segments 110 and the light source segments 210 are arranged alternately in the vertical direction. If the tube 100 and the light source 200 extend in the horizontal direction, the tube segments 110 and the light source segments 210 may be arranged alternately in the horizontal direction. The light source segments 210 may be separated from the tube segments 110 by one or more UV-transmissive material pieces 30, such as Figure 3B As shown in the figure.

[0104] The light source 200 inside the UV germicidal irradiation device 10 is positioned inside one or more internal compartments 400. The internal compartments 400 can be defined by a plate 410, such as a perforated plate, such as 4A to 4D As shown in the figure.

[0105] like 4A to 4D As shown in FIG. 1 , the UV germicidal irradiation system 9 is positioned inside the first room 1. The air inside the first room 1 and surrounding the UV germicidal irradiation device 10 is referred to as ambient air 2. 4A to 4D When treating salt water in the UV germicidal irradiation device 10 shown in FIG. 1 , the salt water solution is usually kept in one or more open containers 40 located inside the first room 1, such as Figure 4A 1, wherein for illustration purposes, saline containers 40 are randomly positioned in the first room 1. The saline is typically transferred from one or more open containers 40 to the UV germicidal irradiation system 10 by means of a tube / pipe 41.

[0106] The very high salt content of the salt water will inevitably mix with the ambient air 2, resulting in the ambient air 2 typically having at least 10 μg salt / m 3 The average salt-air concentration of the air. Therefore, due to at least 10 μg salt / m 3 The very high salt concentration of the air, ambient air 2, provides a corrosive environment for any UV germicidal irradiator located in the same room as the salt water container. This is problematic for metal parts and / or electronic components, particularly for metal parts and / or electronic components located inside the UV germicidal irradiator 10, as they will corrode rapidly if exposed to ambient air 2, but the internal location will make replacement of components more difficult.

[0107] The air cooling system 300 provides external air 6 from the outside 5 of the first room 1 to the UV germicidal irradiation device 10 for directly or indirectly cooling the internal compartment 400 having the light source 200. The external air 6 generally has a salt content of less than 5 μg / m 3The salt concentration of the air, and may be, for example, atmospheric air taken from outside a building, wherein the UV germicidal irradiation device 10 is positioned in the first room 1 in the building. Alternatively or additionally, the salt concentration of the external air 6 is at least 10%, such as at least 20%, such as at least 30%, such as at least 40%, such as at least 50%, such as at least 60%, such as at least 70%, such as at least 80%, such as at least 90%, such as at least 95% lower than the salt concentration of the ambient air 2.

[0108] By using the air cooling system 300, the ambient air 2 is prevented from entering the inner compartment 400 with the light source 200 and the tube 100. 4A to 4D As shown in the figure. 4A to 4D Different configurations are illustrated for directly or indirectly cooling an interior compartment 400 with outside air 6 using an air cooling system 300 that may include different additional components.

[0109] exist Figure 4A , a first UV germicidal irradiation system 9a including a first UV germicidal irradiation device 10a and a first air cooling system 300a is shown. The first UV germicidal irradiation device 10a includes two internal compartments 400a, 400b, each of which has a plurality of tubes 100 surrounded by a light source 200. The internal compartments 400a, 400b are defined by a plurality of perforated plates 410. Figure 4A The first UV germicidal irradiation device 10a shown includes a second interior compartment 402 positioned between two interior compartments 400a, 400b. The first air cooling system 300a utilizes direct cooling of the interior compartment 400 by using the external air 6 as the cooling air 3. The external air 6 enters the first UV germicidal irradiation device 10a through an inlet air duct 312 connected to the first air cooling system 300a. The external air 6 enters the inlet air duct 312 through an inlet duct opening 313 positioned outside the first room 1. Before entering the first air cooling system 300a, the external air 6 may pass through an optional coarse filter 319 or an optional dehumidifier 318. The first air cooling system 300a may have an optional particle filter 316 for filtering fine particles from the external air 6.

[0110] In the first UV germicidal irradiation device 10a, the external air 6 enters the second internal compartment 402, from which the external air 6 is distributed to the internal compartments 400a, 400b before the exhaust air 4 leaves the first UV germicidal irradiation device 10a through the outlet opening 315. The exhaust air 4 is directed into the first room 1, but can also be directed to the outside 5 of the first room by means of an outlet air duct connected to the outlet opening 315. This is for example Figure 4B is shown in the example shown.

[0111] By making the air pressure in the second interior compartment 402 higher than the air pressure in the first air cooling system 300a, the external air 6 flows from the first air cooling system 300a and flows into the first UV germicidal irradiation device 10a as cooling air 3. One or more fans 308 may additionally be used to provide cooling air 3 to the first UV germicidal irradiation device 10a.

[0112] By making the air pressure in the second interior compartment 402 higher than the air pressure in the interior compartments 400a, 400b, which in turn are higher than the air pressure in the first room 1, the cooling air 3 flows from the second interior compartment 402 through the first UV germicidal irradiation device 10a and out into the first room 1 as exhaust air 4. The pressure difference also ensures that ambient air 2 does not enter the first UV germicidal irradiation device 10a. The perforated plate 410 helps to ensure a positive pressure inside the first UV germicidal irradiation device 10a, and helps to guide the airflow through and between the perforated plates 410 and out of the first UV germicidal irradiation device 10a.

[0113] and Figure 4A Compared with the first UV sterilizing irradiation device 10a shown, Figure 4B The second UV germicidal irradiation device 10b shown has only one inner compartment 400 with the tube 100 and the light source 200. In addition, the second UV germicidal irradiation device 10b is connected to an outlet air duct 314 through which the exhaust air 4 leaves the second UV germicidal irradiation device 10b. The external air 6 entering the second air cooling system 300b as cooling air 3 is usually removed by using a combination of Figure 4A The explained pressure difference is directed to the second UV germicidal irradiation device 10b. Thus, the second air cooling system 300b utilizes direct cooling of the interior compartment 400 by using the outside air 6 as the cooling air 3 in a similar manner to the first air cooling system 300a.

[0114] The external air 6 entering the second air cooling system 300b as cooling air 3 and the exhaust air 4 leaving the second UV germicidal irradiation device 10b can pass through an optional heat exchange system for cooling and / or heating the external air 6 and / or the exhaust air 4, such as, for example, an air-liquid heat exchange system 302. If the external air 6 is taken directly from the outside of the building located in a climate with large temperature fluctuations and / or a climate with a temperature that is too low or too high compared to the optimal temperature for cooling the light source 200 inside the internal compartment 400, the heating and / or cooling of the external air 6 can be advantageous. As an alternative to the air-liquid heat exchange system, a temperature regulation system 302 can be used. The temperature regulation system 302 generally includes: a temperature sensor configured to measure the temperature of the external air 6 entering the second air cooling system 300b; and an air conditioning system.

[0115] The air conditioning system is configured to:

[0116] o heating the air entering the one or more internal compartments 400 if the temperature of the external air 6 measured by the temperature sensor is below a first preset temperature value, and

[0117] o If the temperature of the outside air 6 measured by the temperature sensor is above a second preset temperature value, the air entering the one or more internal compartments 400 is cooled.

[0118] Figure 4C The third UV sterilization irradiation device 10c shown is similar to Figure 4B The second UV sterilizing irradiation device 10b is shown. Figure 4A The first air cooling system 300a and Figure 4B Compared to the second air cooling system 300b shown, Figure 4C The third air cooling system 300c shown utilizes an internal air duct system 317, wherein the cooling air 3 is recirculated as recirculation air 7 in the internal air duct system 317. Arrows illustrate the direction of airflow. The recirculation air 7 passes through the heat exchange system 302, wherein the recirculation air 7 is cooled and / or heated by the external air 6 entering the inlet air duct 312, which passes through the heat exchange system 302. The external air 6 leaves the inlet air duct 312 through the outlet opening 315. Therefore, the third air cooling system 300c uses the external air 6 to indirectly cool the internal compartment 400. Using the external air 6 to cool the recirculation air 7 ensures that the ambient air 2 with a high salt concentration is prevented from entering the third air cooling system 300c and the third UV sterilization irradiation device 10c. The heat exchange system 302 can be alternatively or additionally a valve system that mixes the external air 6 and the recirculation air 7, and then guides the mixed air to the third air cooling system 300c.

[0119] Figure 4D The fourth UV sterilization irradiation device 10d shown is similar to Figure 4B The second UV sterilizing irradiation device 10b and Figure 4C The third UV sterilizing irradiation device 10c shown. Figure 4C The third air cooling system 300c shown, Figure 4D The fourth air cooling system 300d shown utilizes an internal air duct system 317, wherein the cooling air 3 is recirculated as recirculation air 7 in the internal air duct system 317. Arrows illustrate the direction of airflow. The recirculation air 7 passes through the heat exchange system 302 connected to the air-liquid heat exchange system 320, wherein the recirculation air 7 is cooled and / or heated by a cooling medium 322, which is typically water, and the cooling medium 322 is cooled by the external air 6 entering the inlet air duct 312. The external air 6 leaves the inlet air duct 312 through the outlet opening 315. Therefore, the fourth air cooling system 300d uses the external air 6 to indirectly cool the internal compartment 400. Using the combination of the external air 6 and the cooling medium 322 contained in the closed pipe system to cool the recirculation air 7 ensures that the ambient air 2 with a high salt concentration is prevented from entering the fourth air cooling system 300d and the fourth UV sterilization irradiation device 10d. The cooling medium 8 can be water, or alternatively another cooling liquid.

[0120] The present invention is further described in the following items.

[0121] 1. A use of a UV sterilization irradiation system 9, wherein the UV sterilization irradiation system 9 is used to treat salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0122] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has a salt content of at least 10 μg / m 3 The average salt-air concentration of the air, and wherein the UV germicidal irradiation device 10 comprises:

[0123] - at least one tube 100, said tube 100 having:

[0124] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0125] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0126] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0127] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0128] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0129] Therein, the air cooling system 300 is configured to utilize external air 6 from outside 5 of the first room 1 for:

[0130] A. directly cooling one or more light sources 200 by providing external air 6 as cooling air 3 to one or more internal compartments 400, or

[0131] B. indirectly cooling the one or more light sources 200 by means of an air cooling system 300, the air cooling system 300 comprising an internal air duct system 317 containing internal recirculation air 7, wherein the recirculation air 7 is provided to the one or more internal compartments 400 as cooling air 3 for cooling the one or more light sources 200, and wherein the recirculation air 7 is cooled by the external air 6,

[0132] The outside air 6 has a salt content of less than 5 μg / m 3 The salt concentration of the air.

[0133] 2. A use of a UV sterilization irradiation system 9, wherein the UV sterilization irradiation system 9 is used to treat salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0134] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has a salt content of at least 10 μg / m 3 The average salt-air concentration of the air, and wherein the UV germicidal irradiation device 10 comprises:

[0135] - at least one tube 100, said tube 100 having:

[0136] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0137] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0138] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0139] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0140] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0141] The air cooling system 300 is configured to directly cool the one or more light sources 200 using the external air 6 from the outside 5 of the first room 1 by providing the external air 6 as cooling air 3 to the one or more internal compartments 400, wherein the external air 6 has a salt content of less than 5 μg / m 3 The salt concentration of the air.

[0142] 3. A use of a UV sterilization irradiation system 9, wherein the UV sterilization irradiation system 9 is used to treat salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0143] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has a salt content of at least 10 μg / m 3 The average salt-air concentration of the air, and wherein the UV germicidal irradiation device 10 comprises:

[0144] - at least one tube 100, said tube 100 having:

[0145] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0146] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0147] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0148] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0149] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0150] The air cooling system 300 is configured for indirectly cooling the one or more light sources 200 by means of the air cooling system 300 using external air 6 from the outside 5 of the first room 1, the air cooling system 300 comprising an internal air duct system 317 for receiving internal recirculation air 7, wherein the recirculation air 7 is provided to the one or more internal compartments 400 as cooling air 3 for cooling the one or more light sources 200, and wherein the external air 6 is cooled by the recirculation air 7, wherein the external air 6 has a salt content of less than 5 μg / m 3 The salt concentration of the air.

[0151] 4. A use of a UV sterilization irradiation system 9, wherein the UV sterilization irradiation system 9 is used to treat salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0152] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has a salt content of at least 10 μg / m 3 The average salt-air concentration of the air, and wherein the UV germicidal irradiation device 10 comprises:

[0153] - at least one tube 100, said tube 100 having:

[0154] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0155] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0156] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0157] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0158] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0159] wherein the air cooling system 300 is configured for indirectly cooling one or more light sources 200 by means of the air cooling system 300 using external air 6 from outside 5 of the first room 1, the air cooling system 300 comprising an internal air duct system 317 accommodating internal recirculating air 7, wherein the recirculating air 7 is provided to the one or more internal compartments 400 as cooling air 3 for cooling the one or more light sources 200, and wherein the external air 6 is cooled recirculating air 7, wherein the salt concentration of the external air 6 is lower than the salt concentration of the ambient air 2 by at least 10%, such as at least 20%, such as at least 30%, such as at least 40%, such as at least 50%, such as at least 60%, such as at least 70%, such as at least 80%, such as at least 90%, such as at least 95%.

[0160] 5. Use of the UV germicidal irradiation system 9 according to any of the preceding items, wherein the external air 6 has a salt content of less than 1 μg / m 3 The salt concentration of the air.

[0161] 6. Use of a UV germicidal irradiation system 9 according to any of the preceding items, wherein one or more internal compartments 400 have an internal compartment air pressure that is higher than the ambient air pressure of the ambient air 2 in the first room 1, thereby preventing the ambient air 2 from entering the one or more internal compartments 400.

[0162] 7. Use of a UV germicidal irradiation system 9 according to any of the preceding items, wherein the one or more internal compartments 400 form a substantially airtight system.

[0163] 8. Use of the UV germicidal irradiation system 9 according to any of the preceding items, wherein the air cooling system 300 comprises one or more fans 308 , and the one or more fans 308 are configured to transfer the cooling air 3 to the UV germicidal irradiation device 10 .

[0164] 9. Use of the UV germicidal irradiation system 9 according to item 8, wherein the one or more fans 308 are configured to rotate at an adjustable speed.

[0165] 10. Use of a UV germicidal irradiation system 9 according to any preceding clause, wherein the one or more light sources 200 comprise an adjustable light source output.

[0166] 11. Use of the UV germicidal irradiation system 9 according to any of the preceding items, wherein the UV germicidal irradiation system 9 comprises a temperature sensor for measuring the temperature of the cooling air 3 entering the UV germicidal irradiation device 10.

[0167] 12. The use of the UV germicidal irradiation system 9 according to any of the preceding items, wherein the UV germicidal irradiation device 10 further comprises one or more perforated plates 410 defining one or more internal compartments 400 .

[0168] 13. Use of a UV germicidal irradiation system 9 according to item 12 dependent on item 2, wherein one or more perforated plates 410 are configured to ensure that the internal compartment air pressure is higher than the ambient air pressure of the ambient air 2 in the first room 1.

[0169] 14. Use of a UV sterilizing irradiation system 9 according to any one of items 2 to 13 subordinate to item 2, wherein the UV sterilizing irradiation device 10 includes a second internal compartment 402 having a second internal compartment air pressure, the second internal compartment 402 being positioned between one or more internal compartments 400 accommodating one or more light sources 200 and the air cooling system 300, wherein the second internal compartment air pressure is higher than the first-mentioned internal compartment air pressure.

[0170] 15. Use of a UV germicidal irradiation system 9 according to any of the preceding items, wherein the air cooling system 300 comprises an inlet air duct 312 having an inlet duct opening 313 configured for positioning outside 5 of the first room 1 .

[0171] 16. Use of the UV sterilizing irradiation system 9 according to any of the preceding items, wherein the air cooling system 300 comprises one or more coarse filters 319, wherein the one or more coarse filters 319 are configured to filter larger particles from the cooling air 3 before the cooling air 3 enters the UV sterilizing irradiation device 10.

[0172] 17. Use of a UV germicidal irradiation system 9 according to item 16 as appended to item 15, wherein one or more coarse filters 319 are positioned along the inlet air duct 312.

[0173] 18. Use of the UV germicidal irradiation system 9 according to any of the preceding items, wherein the air cooling system 300 comprises a dehumidifier 318, which is configured to reduce the humidity of the cooling air 3 before the cooling air 3 enters the UV germicidal irradiation device 10.

[0174] 19. Use of a UV germicidal irradiation system 9 according to item 18, which is dependent on item 15, wherein a dehumidifier 318 is positioned along the inlet air duct 312.

[0175] 20. Use of a UV germicidal irradiation system 9 according to any of the preceding items, wherein the UV germicidal irradiation device 10 comprises an outlet opening 315 through which the external air 6 leaves the UV germicidal irradiation device 10 as exhaust air 4.

[0176] 21. Use of a UV germicidal irradiation system 9 according to item 20, wherein the exhaust air 4 leaves through the outlet opening 315 and enters the first room 1.

[0177] 22. Use of the UV germicidal irradiation system 9 according to item 20, wherein the UV germicidal irradiation device 10 includes an outlet air duct 314 having an outlet opening 315, wherein the outlet air duct 314 leads to a position outside 5 of the first room 1, whereby the exhaust gas 4 is guided to a position outside 5 of the first room 1.

[0178] 23. Use of the UV sterilization irradiation system 9 according to any of the preceding items, wherein the air cooling system 300 includes one or more particle filters 316, and the one or more particle filters 316 are configured to filter fine particles from the external air 6 and / or the internal recirculating air 7 before the external air 6 and / or the internal recirculating air 7 enter the UV sterilization irradiation device 10.

[0179] 24. The use of the UV germicidal irradiation system 9 according to any of the preceding items, wherein the system 10 further comprises a temperature regulation system 302, the temperature regulation system 302 comprising a temperature sensor and an air conditioning system, the temperature sensor being configured to measure the temperature of the external air 6 and / or the recirculated air 7 and / or the cooling air 3 entering the air cooling system 300, wherein the air conditioning system is configured to:

[0180] o heating the cooling air 3 entering the one or more interior compartments 400 if the temperature of the outside air 6 and / or the recirculation air 7 and / or the cooling air 3 measured by the temperature sensor is below a first preset temperature value;

[0181] o If the temperature of the outside air 6 and / or the recirculation air 7 and / or the cooling air 3 measured by the temperature sensor is above a second preset temperature value, the air entering the one or more internal compartments 400 is cooled.

[0182] 25. The use of the UV sterilization irradiation system 9 according to any of the preceding items, wherein the air cooling system 300 is connected to an air-liquid heat exchange system 302, the air-liquid heat exchange system 302 comprising one or more coolant containers containing a coolant, wherein the air-liquid heat exchange system 302 is configured to heat or cool the external air 6 before the external air 6 enters the UV sterilization irradiation device 10.

[0183] 26. Use of the UV germicidal irradiation system 9 according to item 25 dependent on item 24, wherein the temperature regulation system 302 is an air-liquid heat exchange system 302.

[0184] 27. Use of a UV germicidal irradiation system 9 according to item 25 or 26 dependent on item 15, wherein the air-liquid heat exchange system 302 is positioned along the inlet air duct 312.

[0185] 28. Use of a UV germicidal irradiation system 9 according to item 25 or 26, wherein the exhaust air 4 and / or the recirculation air 7 is led through an air-liquid heat exchange system 302, thereby heating the incoming external air 6.

[0186] 29. Use of a UV germicidal irradiation system 9 according to any of the preceding items, wherein the UV germicidal irradiation system 9 comprises a top side 15, and wherein the air cooling system 300 is positioned as a part of the top side 15.

[0187] 30. Use of the UV germicidal irradiation system 9 according to any of the preceding items, wherein the UV germicidal irradiation device 10 includes one or more light source filters 230 positioned between one or more light sources 200 and the fluid path 104 of at least one tube 100, wherein the one or more light source filters 230 are configured to prevent light with a wavelength higher than 315 nm from reaching the fluid path of at least one tube 100.

[0188] 31. Use of the UV sterilization irradiation system 9 according to any of the preceding items, wherein the UV sterilization irradiation device 10 comprises a plurality of tubes 100 arranged in one or more tube segments 110 and a plurality of light sources 200 arranged in one or more light source segments 210, wherein the tube segments 110 and the light source segments 210 are alternately arranged in the horizontal direction H or the vertical direction V.

[0189] 32. Use of the UV germicidal irradiation system 9 according to item 30, wherein the light source section 210 is separated from the tube section 110 by one or more UV transparent material pieces 30.

[0190] 33. Use of a UV germicidal irradiation system 9 according to any of the preceding clauses, wherein the fluid path 104 is a coiled tubing section 104 in the form of a spiral tube.

[0191] 34. The use of the UV germicidal irradiation system 9 according to item 33, further comprising at least one elongated support structure 114, wherein the spiral tube 104 is coiled around the elongated support structure along the longitudinal axis L of the fluid path.

[0192] 35. A method for treating salt water with UV sterilizing radiation using a UV sterilizing radiation system 9, the UV sterilizing radiation system 9 comprising a UV sterilizing radiation device 10 and an air cooling system 300,

[0193] The UV sterilization irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0194] - at least one tube 100, said tube 100 having:

[0195] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0196] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0197] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0198] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0199] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0200] Wherein, the air cooling system 300 is configured to directly or indirectly cool one or more light sources 200 inside one or more internal compartments 400;

[0201] Among them, the method includes:

[0202] Supplying saline to a UV germicidal irradiation device 10 positioned in a first room 1 having an ambient air 2 surrounding the UV germicidal irradiation device 10, the ambient air 2 having at least 10 μg salt / m 3 Average salt-air concentration of the air;

[0203] · Performing UV sterilization irradiation treatment on the salt water in the UV sterilization irradiation device 10;

[0204] Reduce the salt concentration from the outside 5 of the first room 1 to less than 5 μg salt / m 3 The outside air 6 of the air is provided to the air cooling system 300; and

[0205] Cooling one or more light sources 200 inside one or more interior compartments 400 directly or indirectly with external air 6 by means of an air cooling system 300, wherein:

[0206] A. direct cooling of the one or more light sources 200 is obtained by providing external air 6 as cooling air 3 to one or more internal compartments 400, and

[0207] B. Indirect cooling of the one or more light sources 200 is obtained by providing the one or more internal compartments 400 with recirculated air 7 as cooling air 3 for cooling the one or more light sources 200 and cooling the recirculated air 7 by the external air 6 .

[0208] 36. A method for treating salt water with UV sterilizing radiation using a UV sterilizing radiation system 9, the UV sterilizing radiation system 9 comprising a UV sterilizing radiation device 10 and an air cooling system 300,

[0209] The UV sterilization irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0210] - at least one tube 100, said tube 100 having:

[0211] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0212] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0213] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0214] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0215] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0216] Wherein, the air cooling system 300 is configured to directly or indirectly cool one or more light sources 200 inside one or more internal compartments 400;

[0217] Among them, the method includes:

[0218] Supplying saline to a UV germicidal irradiation device 10 positioned in a first room 1 having an ambient air 2 surrounding the UV germicidal irradiation device 10, the ambient air 2 having at least 10 μg salt / m 3 Average salt-air concentration of the air;

[0219] · Performing UV sterilization irradiation treatment on the salt water in the UV sterilization irradiation device 10;

[0220] providing external air 6 from outside 5 of the first room 1 to the air cooling system 300, wherein the salt concentration of the external air 6 is at least 10%, such as at least 20%, such as at least 30%, such as at least 40%, such as at least 50%, such as at least 60%, such as at least 70%, such as at least 80%, such as at least 90%, such as at least 95% lower than the salt concentration of the ambient air 2; and

[0221] Cooling one or more light sources 200 inside one or more interior compartments 400 directly or indirectly with external air 6 by means of an air cooling system 300, wherein:

[0222] A. direct cooling of the one or more light sources 200 is obtained by providing external air 6 as cooling air 3 to one or more internal compartments 400, and

[0223] B. Indirect cooling of the one or more light sources 200 is obtained by providing the one or more internal compartments 400 with recirculated air 7 as cooling air 3 for cooling the one or more light sources 200 and cooling the recirculated air 7 by the external air 6 .

[0224] 37. A method for treating salt water with UV sterilizing radiation using a UV sterilizing radiation system 9, the UV sterilizing radiation system 9 comprising a UV sterilizing radiation device 10 and an air cooling system 300,

[0225] The UV sterilization irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0226] - at least one tube 100, said tube 100 having:

[0227] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0228] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0229] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0230] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0231] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0232] Wherein, the air cooling system 300 is configured to directly cool one or more light sources 200 inside one or more internal compartments 400;

[0233] Among them, the method includes:

[0234] Supplying saline to a UV germicidal irradiation device 10 positioned in a first room 1 having an ambient air 2 surrounding the UV germicidal irradiation device 10, the ambient air 2 having at least 10 μg salt / m 3 Average salt-air concentration of the air;

[0235] · Performing UV sterilization irradiation treatment on the salt water in the UV sterilization irradiation device 10;

[0236] Reduce the salt concentration from the outside 5 of the first room 1 to less than 5 μg salt / m 3 The outside air 6 of the air is provided to the air cooling system 300; and

[0237] Directly cooling one or more light sources 200 inside one or more interior compartments 400 with external air 6 by means of the air cooling system 300 , wherein direct cooling of the one or more interior light sources 200 is obtained by providing the one or more interior compartments 400 with external air 6 as cooling air 3 .

[0238] 38. A method for treating salt water with UV sterilization irradiation using a UV sterilization irradiation system 9, the UV sterilization irradiation system 9 comprising a UV sterilization irradiation device 10 and an air cooling system 300,

[0239] The UV sterilization irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0240] - at least one tube 100, said tube 100 having:

[0241] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0242] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0243] a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0244] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0245] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0246] Wherein, the air cooling system 300 is configured to indirectly cool one or more light sources 200 inside one or more internal compartments 400;

[0247] Among them, the method includes:

[0248] Supplying saline to a UV germicidal irradiation device 10 positioned in a first room 1 having an ambient air 2 surrounding the UV germicidal irradiation device 10, the ambient air 2 having at least 10 μg salt / m 3 Average salt-air concentration of the air;

[0249] · Performing UV sterilization irradiation treatment on the salt water in the UV sterilization irradiation device 10;

[0250] Reduce the salt concentration from the outside 5 of the first room 1 to less than 5 μg salt / m 3 The outside air 6 of the air is provided to the air cooling system 300; and

[0251] ·Indirectly cooling one or more light sources 200 inside one or more internal compartments 400 with external air 6 by means of the air cooling system 300, wherein the indirect cooling of the one or more light sources 200 is obtained by providing recirculating air 7 as cooling air 3 for cooling the one or more light sources 200 to the one or more internal compartments 400 and cooling the recirculating air 7 by means of the external air 6.

[0252] 39. The method according to any one of items 35 to 38, wherein the external air 6 has a salt content of less than 1 μg / m 3 The salt concentration of the air.

[0253] 40. The method according to any one of items 35 to 39, wherein the UV sterilizing irradiation treatment of the salt water in the UV sterilizing irradiation device 10 and the cooling of the one or more light sources 200 inside the one or more internal compartments 400 are performed simultaneously.

[0254] 41. A UV sterilization irradiation system 9 for treating salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0255] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0256] - at least one tube 100, said tube 100 having:

[0257] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0258] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0259] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0260] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0261] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0262] Therein, the air cooling system 300 is configured to utilize external air 6 from outside 5 of the first room 1 for:

[0263] A. directly cooling one or more light sources 200 by providing external air 6 as cooling air 3 to one or more internal compartments 400, or

[0264] B. indirectly cooling the one or more light sources 200 by means of an air cooling system 300, the air cooling system 300 comprising an internal air duct system 317 containing internal recirculation air 7, wherein the recirculation air 7 is provided to the one or more internal compartments 400 as cooling air 3 for cooling the one or more light sources 200, and wherein the recirculation air 7 is cooled by the external air 6,

[0265] The outside air 6 has a salt content of less than 5 μg / m 3 The salt concentration of the air.

[0266] 42. A UV sterilization irradiation system 9 for treating salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0267] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0268] - at least one tube 100, said tube 100 having:

[0269] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0270] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0271] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0272] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0273] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured for preventing the entry of ambient air 2 into the one or more internal compartments 400; and

[0274] Therein, the air cooling system 300 is configured to utilize external air 6 from outside 5 of the first room 1 for:

[0275] A. directly cooling one or more light sources 200 by providing external air 6 as cooling air 3 to one or more internal compartments 400, or

[0276] B. indirectly cooling the one or more light sources 200 by means of an air cooling system 300, the air cooling system 300 comprising an internal air duct system 317 containing internal recirculation air 7, wherein the recirculation air 7 is provided to the one or more internal compartments 400 as cooling air 3 for cooling the one or more light sources 200, and wherein the external air 6 is cooled recirculation air 7,

[0277] In which the salt concentration of the external air 6 is at least 10%, such as at least 20%, such as at least 30%, such as at least 40%, such as at least 50%, such as at least 60%, such as at least 70%, such as at least 80%, such as at least 90%, such as at least 95% lower than the salt concentration of the ambient air 2.

[0278] 43. A UV sterilization irradiation system 9 for treating salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0279] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0280] - at least one tube 100, said tube 100 having:

[0281] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0282] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0283] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0284] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0285] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0286] The air cooling system 300 is configured to directly cool the one or more light sources 200 using the external air 6 from the outside 5 of the first room 1 by providing the external air 6 as cooling air 3 to the one or more internal compartments 400, wherein the external air 6 has a salt content of less than 5 μg / m 3 The salt concentration of the air.

[0287] 44. A UV sterilization irradiation system 9 for treating salt water, wherein the UV sterilization irradiation system 9 comprises a UV sterilization irradiation device 10 and an air cooling system 300,

[0288] The UV sterilizing irradiation device 10 is positioned inside a first room 1, and the first room 1 has an ambient air 2 surrounding the UV sterilizing irradiation device 10, and the ambient air 2 has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV germicidal irradiation device 10 comprises:

[0289] - at least one tube 100, said tube 100 having:

[0290] o an inlet section 102, which includes a tube inlet 103 through which saline enters the tube 100;

[0291] o an outlet section 106 including a tube outlet 107 through which saline leaves the tube 100; and

[0292] o a fluid path 104 extending along the longitudinal axis L from the inlet section 102 to the outlet section 106;

[0293] one or more light sources 200 configured to illuminate the fluid path 104, wherein the one or more light sources 200 emit light having at least one wavelength in the wavelength range between 180 nm and 315 nm;

[0294] - one or more internal compartments 400, wherein at least the one or more light sources 200 are confined inside the one or more internal compartments 400, wherein the one or more internal compartments 400 are configured to prevent the entry of ambient air 2 into the one or more internal compartments 400; and

[0295] The air cooling system 300 is configured for indirectly cooling the one or more light sources 200 by means of the air cooling system 300 using external air 6 from the outside 5 of the first room 1, the air cooling system 300 comprising an internal air duct system 317 for receiving internal recirculation air 7, wherein the recirculation air 7 is provided to the one or more internal compartments 400 as cooling air 3 for cooling the one or more light sources 200, and wherein the external air 6 is cooled by the recirculation air 7, wherein the external air 6 has a salt content of less than 5 μg / m 3 The salt concentration of the air.

[0296] 45. The UV germicidal irradiation system 9 according to any one of items 41 to 44, wherein the external air 6 has a salt content of less than 1 μg / m 3 The salt concentration of the air.

[0297] 46. ​​A UV sterilization irradiation system 9 according to any one of items 41 to 45, wherein one or more internal compartments 400 have an internal compartment air pressure higher than the ambient air pressure of the ambient air 2 in the first room 1, thereby preventing the ambient air 2 from entering the one or more internal compartments 400.

[0298] 47. The UV germicidal irradiation system 9 according to any one of items 41 to 45, wherein the one or more internal compartments 400 form a substantially airtight system.

[0299] 48. The UV germicidal irradiation system 9 according to any one of items 41 to 47, wherein the air cooling system 300 includes one or more fans 308, and the one or more fans 308 are configured to transfer the cooling air 3 to the UV germicidal irradiation device 10.

[0300] 49. The UV germicidal irradiation system 9 according to item 48, wherein the one or more fans 308 are configured to rotate at an adjustable speed.

[0301] 50. The UV germicidal irradiation system 9 according to any one of items 41 to 49, wherein one or more light sources 200 include an adjustable light source output.

[0302] 51. The UV germicidal irradiation system 9 according to any one of items 41 to 50, wherein the UV germicidal irradiation system 9 comprises a temperature sensor for measuring the temperature of the cooling air 3 entering the UV germicidal irradiation device 10.

[0303] 52. The UV germicidal irradiation system 9 according to any one of items 41 to 51, wherein the UV germicidal irradiation device 10 further comprises one or more perforated plates 410 defining one or more internal compartments 400.

[0304] 53. The UV germicidal irradiation system 9 according to item 52 dependent on item 45, wherein the one or more perforated plates 410 are configured to ensure that the internal compartment air pressure is higher than the ambient air pressure of the ambient air 2 in the first room 1.

[0305] 54. A UV sterilization irradiation system 9 according to any one of items 45 to 53 subordinate to item 45, wherein the UV sterilization irradiation device 10 includes a second internal compartment 402 having a second internal compartment air pressure, the second internal compartment 402 being positioned between one or more internal compartments 400 accommodating one or more light sources 200 and the air cooling system 300, wherein the second internal compartment air pressure is higher than the first-mentioned internal compartment air pressure.

[0306] 55. The UV germicidal irradiation system 9 according to any one of items 41 to 54, wherein the air cooling system 300 comprises an inlet air duct 312 having an inlet duct opening 313, the inlet duct opening 313 being configured for positioning outside 5 of the first room 1.

[0307] 56. A UV sterilization irradiation system 9 according to any one of items 41 to 55, wherein the air cooling system 300 includes one or more coarse filters 319, and the one or more coarse filters 319 are configured to filter larger particles from the cooling air 3 before the cooling air 3 enters the UV sterilization irradiation device 10.

[0308] 57. The UV germicidal irradiation system 9 according to item 56 dependent on item 55, wherein one or more coarse filters 319 are positioned along the inlet air duct 312.

[0309] 58. The UV germicidal irradiation system 9 according to any one of items 41 to 56, wherein the air cooling system 300 includes a dehumidifier 318, which is configured to reduce the humidity of the cooling air 3 before the cooling air 3 enters the UV germicidal irradiation device 10.

[0310] 59. The UV germicidal irradiation system 9 according to item 58 dependent on item 55, wherein the dehumidifier 318 is positioned along the inlet air duct 312.

[0311] 60. The UV germicidal irradiation system 9 according to any one of items 41 to 59, wherein the UV germicidal irradiation device 10 comprises an outlet opening 315 through which the external air 6 leaves the UV germicidal irradiation device 10 as exhaust air 4.

[0312] 61. The UV germicidal irradiation system 9 according to item 60, wherein the exhaust gas 4 leaves through the outlet opening 315 and enters the first room 1.

[0313] 62. A UV sterilization irradiation system 9 according to item 60, wherein the UV sterilization irradiation device 10 comprises an outlet air duct 314 having an outlet opening 315, wherein the outlet air duct 314 leads to a position outside 5 of the first room 1, whereby the exhaust gas 4 is guided to a position outside 5 of the first room 1.

[0314] 63. A UV sterilization irradiation system 9 according to any one of items 41 to 62, wherein the air cooling system 300 includes one or more particle filters 316, and the one or more particle filters 316 are configured to filter fine particles from the external air 6 and / or the internal recirculating air 7 before the external air 6 and / or the internal recirculating air 7 enter the UV sterilization irradiation device 10.

[0315] 64. The UV germicidal irradiation system 9 according to any one of items 41 to 63, wherein the system 10 further comprises a temperature regulation system 302, the temperature regulation system 302 comprising a temperature sensor and an air conditioning system, the temperature sensor being configured to measure the temperature of the external air 6 and / or the recirculated air 7 and / or the cooling air 3 entering the air cooling system 300, wherein the air conditioning system is configured to:

[0316] o heating the cooling air 3 entering the one or more interior compartments 400 if the temperature of the outside air 6 and / or the recirculation air 7 and / or the cooling air 3 measured by the temperature sensor is below a first preset temperature value;

[0317] o If the temperature of the outside air 6 and / or the recirculation air 7 and / or the cooling air 3 measured by the temperature sensor is above a second preset temperature value, the air entering the one or more internal compartments 400 is cooled.

[0318] 65. A UV sterilization irradiation system 9 according to any one of items 41 to 64, wherein the air cooling system 300 is connected to an air-liquid heat exchange system 302, the air-liquid heat exchange system 302 includes one or more coolant containers containing coolant, wherein the air-liquid heat exchange system 302 is configured to heat or cool the external air 6 before the external air 6 enters the UV sterilization irradiation device 10.

[0319] 66. The UV germicidal irradiation system 9 according to item 65 dependent on item 64, wherein the temperature adjustment system 302 is an air-liquid heat exchange system 302.

[0320] 67. A UV germicidal irradiation system 9 according to item 65 or 66 dependent on item 64, wherein the air-liquid heat exchange system 302 is positioned along the inlet air duct 312.

[0321] 68. A UV germicidal irradiation system 9 according to item 65 or 66, wherein the exhaust air 4 and / or the recirculated air 7 is directed through an air-liquid heat exchange system 302, thereby heating the incoming external air 6.

[0322] 69. The UV germicidal irradiation system 9 according to any one of items 41 to 68, wherein the UV germicidal irradiation system 9 includes a top side 15, and wherein the air cooling system 300 is positioned as part of the top side 15.

[0323] 70. A UV sterilization irradiation system 9 according to any one of items 41 to 69, wherein the UV sterilization irradiation device 10 includes one or more light source filters 230 positioned between one or more light sources 200 and the fluid path 104 of at least one tube 100, wherein the one or more light source filters 230 are configured to prevent light with a wavelength higher than 315 nm from reaching the fluid path of at least one tube 100.

[0324] 71. A UV sterilization irradiation system 9 according to any one of items 41 to 70, wherein the UV sterilization irradiation device 10 includes a plurality of tubes 100 arranged in one or more tube segments 110 and a plurality of light sources 200 arranged in one or more light source segments 210, wherein the tube segments 110 and the light source segments 210 are alternately arranged in the horizontal direction H or the vertical direction V.

[0325] 72. The UV germicidal irradiation system 9 according to item 70, wherein the light source section 210 is separated from the tube section 110 by one or more UV transparent material pieces 30.

[0326] 73. The UV germicidal irradiation system 9 according to any one of items 41 to 72, wherein the fluid path 104 is a coil section 104 in the form of a spiral tube.

[0327] 74. The UV germicidal irradiation system 9 according to item 72, further comprising at least one elongated support structure 114, wherein the spiral tube 104 is coiled around the elongated support structure along the longitudinal axis L of the fluid path.

[0328] Reference numerals list

[0329] 1. First Room

[0330] 2 Ambient air surrounding the UV sterilization irradiation system

[0331] 3 Cooling air

[0332] 4 Exhaust gas leaving the UV sterilization irradiation system

[0333] 5 Exterior of the first room

[0334] 6 External air from outside the first room

[0335] 7 Recirculation air recirculated in UV germicidal irradiation system

[0336] 9 UV sterilization irradiation system

[0337] 9a The first UV sterilization irradiation system

[0338] 9b Second UV sterilization irradiation system

[0339] 9c Third UV sterilization irradiation system

[0340] 9d Fourth UV sterilization irradiation system

[0341] 10. UV sterilization irradiation device

[0342] 10a The first UV sterilization irradiation device

[0343] 10b Second UV sterilization irradiation device

[0344] 10c The third UV sterilization irradiation device

[0345] 10d Fourth UV sterilization irradiation device

[0346] 11. First side

[0347] 12 Second side

[0348] 13 The third side

[0349] 14 The fourth side

[0350] 15 Top side

[0351] 16 Bottom side

[0352] 17 Brine receiving opening

[0353] 28 Door Panel

[0354] 30 UV transparent material

[0355] 40 Salt water container

[0356] 41 pipe / pipeline

[0357] 100 tubes

[0358] 102 Entrance section

[0359] 103 Tube inlet

[0360] 104 Fluid Path

[0361] 106 Exit Section

[0362] 107 outlet pipe

[0363] 110 pipe section

[0364] 114 Support structure

[0365] 200 Light Source

[0366] 210 Light source section

[0367] 230 Light source filter

[0368] 300 Air Cooling System

[0369] 300a First air cooling system

[0370] 300b Second air cooling system

[0371] 300c Third Air Cooling System

[0372] 300d fourth air cooling system

[0373] 302 Heat exchange system

[0374] 308 Fan

[0375] 310 Opening to air cooling system

[0376] 312 Inlet air duct

[0377] 313 Inlet duct opening

[0378] 314 Outlet air duct

[0379] 315 Exit opening

[0380] 316 Particle Filter

[0381] 317 Internal air duct system

[0382] 318 Dehumidifier

[0383] 319 Coarse filter

[0384] 320 Air-Liquid Heat Exchange System

[0385] 322 Cooling medium

[0386] 400 Internal compartments

[0387] 400a First internal compartment

[0388] 400b Second internal compartment

[0389] 402 Second internal compartment

[0390] 410 Plate, perforated plate

Claims

1. Use of a UV sterilization irradiation system (9), wherein the UV sterilization irradiation system (9) is used to treat salt water, wherein: The UV sterilization irradiation system (9) comprises a UV sterilization irradiation device (10) and an air cooling system (300). The UV sterilizing irradiation device (10) is positioned inside a first room (1), the first room (1) has ambient air (2) surrounding the UV sterilizing irradiation device (10), and the ambient air (2) has at least 10 μg salt / m 3 The average salt-air concentration of the air, and wherein the UV germicidal irradiation device (10) comprises: At least one tube (100), the tube (100) having: an inlet section (102), the inlet section (102) comprising a tube inlet (103), the saline entering the tube (100) through the tube inlet (103); an outlet section (106), the outlet section (106) comprising a tube outlet (107) through which the saline leaves the tube (100); and a fluid path (104) extending along a longitudinal axis (L) from the inlet section (102) to the outlet section (106); one or more light sources (200) configured to illuminate the fluid path (104), wherein the one or more light sources (200) emit light having at least one wavelength within a wavelength range between 180 nm and 315 nm; one or more internal compartments (400), wherein at least the one or more light sources (200) are confined within the one or more internal compartments (400), wherein the one or more internal compartments (400) are configured to prevent the ambient air (2) from entering the one or more internal compartments (400); and Wherein, the air cooling system (300) is configured to utilize external air (6) from outside (5) of the first room (1) for: directly cooling the one or more light sources (200) by providing the external air (6) as cooling air (3) to the one or more internal compartments (400), or the one or more light sources (200) are indirectly cooled by the air cooling system (300), the air cooling system (300) comprising an internal air duct system (317) accommodating internal recirculation air (7), wherein the recirculation air (7) is provided to the one or more internal compartments (400) as cooling air (3) for cooling the one or more light sources (200), and wherein the external air (6) cools the recirculation air (7), The external air (6) has a salt content of less than 5 μg / m 3 The salt concentration of the air.

2. Use of the UV sterilization irradiation system (9) according to claim 1, wherein: The one or more internal compartments (400) have an internal compartment air pressure that is higher than the ambient air pressure of the ambient air (2) in the first room (1), thereby preventing the ambient air (2) from entering the one or more internal compartments (400).

3. Use of the UV sterilization irradiation system (9) according to claim 1 or 2, wherein: The air cooling system (300) includes one or more fans (308) configured to transfer the cooling air (3) into the UV germicidal irradiation device (10).

4. Use of the UV sterilization irradiation system (9) according to claim 1 or 2, wherein: The UV germicidal irradiation system (9) comprises a temperature sensor for measuring the temperature of the cooling air (3) entering the UV germicidal irradiation device (10).

5. Use of the UV sterilization irradiation system (9) according to claim 1 or 2, wherein: The UV germicidal irradiation device (10) further comprises one or more perforated plates (410) defining the one or more internal compartments (400), wherein the one or more perforated plates (410) are configured to ensure that the air pressure of the internal compartments is higher than the ambient air pressure of the ambient air (2) in the first room (1).

6. Use of the UV sterilization irradiation system (9) according to claim 2, wherein: The UV germicidal irradiation device (10) includes a second internal compartment (402) having a second internal compartment air pressure, wherein the second internal compartment (402) is positioned between the one or more internal compartments (400) containing the one or more light sources (200) and the air cooling system (300), wherein the second internal compartment air pressure is higher than the first-mentioned internal compartment air pressure.

7. Use of the UV sterilization irradiation system (9) according to claim 1 or 2, wherein: The air cooling system (300) comprises an inlet air duct (312) having an inlet duct opening (313), the inlet duct opening (313) being configured for positioning outside (5) of the first room (1).

8. Use of the UV sterilization irradiation system (9) according to claim 1 or 2, wherein: The air cooling system (300) comprises: one or more coarse filters (319), the one or more coarse filters (319) being configured to filter larger particles from the cooling air (3) before the cooling air (3) enters the UV germicidal irradiation device (10), and / or A dehumidifier (318) is configured to reduce the humidity of the cooling air (3) before the cooling air (3) enters the UV germicidal irradiation device (10).

9. Use of the UV sterilization irradiation system (9) according to claim 8, wherein: The air cooling system (300) comprises an inlet air duct (312) having an inlet duct opening (313), the inlet duct opening (313) being configured for positioning outside (5) of the first room (1), and Wherein, the one or more coarse filters (319) and / or the dehumidifier (318) are positioned along the inlet air duct (312).

10. Use of the UV germicidal irradiation system (9) according to claim 1 or 2, wherein: The UV sterilizing irradiation device (10) comprises an outlet opening (315), through which the external air (6) leaves the UV sterilizing irradiation device (10) as waste air (4). wherein the exhaust gas (4) leaves through the outlet opening (315) and enters the first room (1), or The UV sterilizing irradiation device (10) comprises an outlet air duct (314) having the outlet opening (315), wherein the outlet air duct (314) leads to a position outside (5) of the first room (1), whereby the exhaust air (4) is guided to a position outside (5) of the first room (1).

11. Use of the UV sterilization irradiation system (9) according to claim 1 or 2, wherein: The air cooling system (300) includes one or more particle filters (316), which are configured to filter fine particles from the external air (6) and / or the internal recirculating air (7) before the external air (6) and / or the internal recirculating air (7) enter the UV germicidal irradiation device (10).

12. Use of the UV sterilization irradiation system (9) according to claim 1 or 2, wherein: The system (10) further comprises a temperature regulation system (302), the temperature regulation system (302) comprising a temperature sensor and an air conditioning system, the temperature sensor being configured to measure the temperature of the outside air (6) and / or the recirculation air (7) and / or the cooling air (3) entering the air cooling system (300), wherein the air conditioning system is configured to: If the temperature of the outside air (6) and / or the recirculated air (7) and / or the cooling air (3) measured by the temperature sensor is below a first preset temperature value, heating the cooling air (3) entering the one or more internal compartments (400); If the temperature of the outside air (6) and / or the recirculated air (7) and / or the cooling air (3) measured by the temperature sensor is higher than a second preset temperature value, the air entering the one or more internal compartments (400) is cooled.

13. Use of the UV germicidal irradiation system (9) according to claim 1 or 2, wherein: The air cooling system (300) is connected to an air-liquid heat exchange system (302), which includes one or more cooling liquid containers containing cooling liquid, wherein the air-liquid heat exchange system (302) is configured to heat or cool the external air (6) before the external air (6) enters the UV sterilization irradiation device (10).

14. A method for treating salt water with UV sterilizing irradiation using a UV sterilizing irradiation system (9), the UV sterilizing irradiation system (9) comprising a UV sterilizing irradiation device (10) and an air cooling system (300), in, The UV germicidal irradiation device (10) is positioned inside a first room (1), the first room (1) having ambient air (2), the ambient air (2) having at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV sterilizing irradiation device (10) comprises: At least one tube (100), the tube (100) having: an inlet section (102), the inlet section (102) comprising a tube inlet (103), the saline entering the tube (100) through the tube inlet (103); an outlet section (106), the outlet section (106) comprising a tube outlet (107) through which the saline leaves the tube (100); and a fluid path (104) extending along a longitudinal axis (L) from the inlet section (102) to the outlet section (106); one or more light sources (200) configured to illuminate the fluid path (104), wherein the one or more light sources (200) emit light having at least one wavelength within a wavelength range between 180 nm and 315 nm; one or more internal compartments (400), wherein at least the one or more light sources (200) are confined within the one or more internal compartments (400), wherein the one or more internal compartments (400) are configured to prevent the ambient air (2) from entering the one or more internal compartments (400); and wherein the air cooling system (300) is configured to directly or indirectly cool the one or more light sources (200) inside the one or more internal compartments (400); Wherein, the method comprises: The saline solution is provided to the UV germicidal irradiation device (10) located in the first room (1), the first room (1) having an ambient air (2) surrounding the UV germicidal irradiation device (10), the ambient air (2) having at least 10 μg salt / m 3 Average salt-air concentration of the air; The salt water is subjected to UV sterilization irradiation treatment in the UV sterilization irradiation device (10); the salt concentration from the outside (5) of the first room (1) is reduced to less than 5 μg salt / m 3 External air (6) of the air is provided to the air cooling system (300); and The one or more light sources (200) inside the one or more internal compartments (400) are cooled directly or indirectly with the external air (6) by means of the air cooling system (300), wherein: Direct cooling of the one or more light sources (200) is obtained by providing the one or more internal compartments (400) with the external air (6) as cooling air (3), and Indirect cooling of the one or more light sources (200) is obtained by providing recirculated air (7) as cooling air (3) for cooling the one or more light sources (200) to the one or more internal compartments (400) and cooling the recirculated air (7) by the external air (6).

15. A UV sterilization irradiation system (9) for treating salt water, wherein: The UV sterilization irradiation system (9) comprises a UV sterilization irradiation device (10) and an air cooling system (300). The UV sterilizing irradiation device (10) is positioned inside a first room (1), the first room (1) has ambient air (2) surrounding the UV sterilizing irradiation device (10), and the ambient air (2) has at least 10 μg salt / m 3 The average salt-air concentration of the air, wherein the UV sterilizing irradiation device (10) comprises: At least one tube (100), the tube (100) having: an inlet section (102), the inlet section (102) comprising a tube inlet (103), the saline entering the tube (100) through the tube inlet (103); an outlet section (106), the outlet section (106) comprising a tube outlet (107) through which the saline leaves the tube (100); and a fluid path (104) extending along a longitudinal axis (L) from the inlet section (102) to the outlet section (106); one or more light sources (200) configured to illuminate the fluid path (104), wherein the one or more light sources (200) emit light having at least one wavelength within a wavelength range between 180 nm and 315 nm; one or more internal compartments (400), wherein at least the one or more light sources (200) are confined within the one or more internal compartments (400), wherein the one or more internal compartments (400) are configured to prevent the ambient air (2) from entering the one or more internal compartments (400); and Wherein, the air cooling system (300) is configured to utilize external air (6) from outside (5) of the first room (1) for: directly cooling the one or more light sources (200) by providing the external air (6) as cooling air (3) to the one or more internal compartments (400), or The one or more light sources (200) are indirectly cooled by the air cooling system (300), the air cooling system (300) comprising an internal air duct system (317) containing internal recirculation air (7), wherein the recirculation air (7) is provided to the one or more internal compartments (400) as cooling air (3) for cooling the one or more light sources (200), and wherein the recirculation air (7) is cooled by the external air (6), wherein the external air (6) has a salt content of less than 5 μg / m 3 The salt concentration of the air.

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