Device and method for cooling

Abstract

The invention provides a device for cooling, comprising a housing (1), which has at least one outer opening (2), at least one substantially vertically extending tube (3), the at least one tube (3) being surrounded by the housing (1) and the tube (3) having an outlet opening (4) which is arranged in such a way that a liquid can flow out of the tube (3) through the outlet opening (4) into a cooling region (5) delimited by the tube (3) and the housing (1), and a fan (6), which is designed to move a gas, in particular air, in the cooling region (5).

Description

[0001] Device and method for cooling

[0002] The invention relates to a device and a method for cooling.

[0003] Various devices and methods for adiabatic cooling (evaporative cooling) are known from the prior art. This involves evaporating water, which requires heat energy that is extracted from the air and used to cool the air. For example, water can be finely atomized using nozzles, creating a mist of water droplets that extracts heat from the surrounding air, thus cooling the environment. The fine atomization increases the surface area of ​​the water, thereby improving the cooling performance. The nozzles used make it possible to specifically cool defined areas.

[0004] However, high pressure is required to generate the mist, which places high demands on the design of the cooling device. Furthermore, several nozzles must be arranged accordingly to mist and cool an area. Another disadvantage of atomizing water for cooling is that the fine water droplets produced are so small that they can be inhaled by humans. If the water droplets are contaminated, e.g., with bacteria such as Legionella, these contaminants enter the human body and can cause various damage, such as illness.

[0005] It is therefore an object of the invention to provide a device and a method that make it possible to provide evaporative cooling in a simple manner, minimizing or completely eliminating the risk of contaminants spreading through the ambient air. Preferably, it should be possible to cool a given area with minimal effort.

[0006] According to the invention, a device of the type mentioned at the outset is provided, comprising a housing which has at least one external opening, at least one essentially vertically running tube, wherein the at least one tube is surrounded by the housing and the tube has an outlet opening which is arranged such that a liquid can flow through the outlet opening from the tube into a cooling area delimited by the tube and the housing, and a fan which is designed to move a gas, in particular air, in the cooling area. In this device, the liquid can first be guided upwards in the tube and then introduced into the cooling area through the outlet opening. For this purpose, liquid is introduced into an inlet opening of the tube and then exits again from the tube into the cooling area through the outlet opening arranged above the inlet opening of the tube.In the cooling zone, the liquid is then guided downwards by the effect of gravity and comes into contact with a gas, in particular air, so that the gas is cooled by the evaporation of the liquid, in particular water. The gas cooled in this way is then released from the cooling zone through the external opening(s) into the environment in order to cool it. A cooled air stream is released into the environment, e.g. into a lounge area of ​​a building unit in which people or animals can sit, stand or lie down. In particular, the lounge area can be barrier-free.

[0007] During operation, the device according to the invention achieves, on the one hand, cooling by directly cooling the gas, in particular air, flowing out of the external openings and, on the other hand, cooling by the air flow emerging from the external openings, which lowers the perceived temperature.

[0008] The housing has, for example, an inlet opening to allow gas to enter the cooling area. The inlet opening is preferably arranged in the lower region of the housing, in particular vertically below the outlet openings. The gas is guided from bottom to top in the cooling area. Alternatively, the inlet opening can be arranged in the upper region of the housing, in particular vertically above the outlet opening(s). The gas is introduced into the housing from above and the outer openings are located below the inlet opening. More than one inlet opening can also be provided. For example, symmetrically arranged inlet openings can be provided on two sides of a housing in order to increase the amount of gas guided through the cooling area. More than one fan can also be provided. If, for example,If a second inlet opening is arranged in the housing, a second fan is preferably located in the second inlet opening. The inlet opening can preferably be arranged such that cooling in a desired area is achieved by the gas flow sucked into the inlet opening. In addition to the gas flow exiting the outer openings, the gas flow entering through the inlet opening is also used for cooling. The outer opening(s) in the housing can be arranged in a horizontal, vertical or even an inclined plane. As a result, the air flow exiting from the outer openings during operation is guided to the desired area as required.

[0009] The housing can be mounted, for example, on the floor or on a pedestal. Alternatively, the housing can also be suspended, for example, on a wall or an overhead frame. Preferably, the external openings are arranged such that an area beneath the housing can be cooled. This can utilize the effect of cool air sinking downwards. Preferably, a guide channel is arranged such that gas escaping from the external openings is guided through the guide channel into an external area.

[0010] The outlet opening is formed, for example, by the pipe opening and in this case has the diameter of the pipe. Particularly preferably, the outlet opening lies in a substantially horizontal plane. The liquid is guided to the outlet opening and flows through this along the outer surface of the pipe back down under gravity. Alternatively or additionally, at least one outlet opening can be formed in the casing of the pipe. In this case, the outlet opening is preferably located substantially in a vertical plane, i.e. laterally in the pipe. A pipe can have several outlet openings. This arrangement increases the water surface in the cooling area during operation and thus the cooling performance. The pipe(s) can be made, for example, of a plastic or a metal such as (stainless) steel. The cross-section of the pipe is preferably circular, but can also be square or have a different shape.

[0011] The housing can, for example, be cylindrical, particularly if only one tube is provided, or it can be cuboid or have a different shape. If multiple tubes are provided, the housing is preferably cuboid. In this case, multiple tubes are preferably arranged in a common housing, thereby forming a common cooling area. Alternatively, each tube can have its own housing, thus forming multiple cooling areas. The housing can, for example, be designed as the back wall of a bench. The outer opening(s) is / are preferably arranged in a side of the housing designed as a backrest. This enables direct cooling of a person sitting on the bench. The housing is preferably made of a metal, e.g. (stainless) steel.

[0012] In order to enable a uniform flow of gas in the cooling area up to the external openings, a fan is provided which is designed to move a gas, in particular air, in the cooling area. The fan is preferably arranged in the inlet opening. The fan can guide the gas into the cooling area and out of the external openings. This increases the efficiency of the cooling because a larger amount of gas can be guided through the cooling area and the external openings and better cooling can therefore be achieved than if the gas were only guided through the cooling area and the external openings, for example by the liquid flow. A fan is understood to be any device which is designed to set a gas in motion. A fan can also be arranged in an outlet opening and / or in the housing. The fan or fans can each be arranged to blow or pull. The fan can, for example,be driven by electrical energy. Alternatively or additionally, the fan can be designed so that it is driven by the liquid flowing down the housing.

[0013] In order to increase the contact time of the gas guided through the cooling region with the liquid emerging from the at least one outlet opening, guide elements are preferably provided which guide the gas from the inlet opening to the outlet opening(s) along a gas path. The gas path has at least one bend, so that the gas path is longer than the direct path from the inlet opening to the outlet opening(s). The gas path is preferably designed to be meandering, at least in sections. The guide elements can, for example, be webs which project from the inner wall of the housing into the cooling region. Furthermore, the guide elements are or comprise one or more plate-shaped elements which are preferably arranged essentially parallel to one another. Two, three, four, five or more plate-shaped elements are preferably provided.The plate-shaped elements preferably extend substantially over the entire cross-section of the housing and substantially prevent gas from passing from the top side of the plate-shaped element to a bottom side of the plate-shaped element. The plate-shaped elements preferably each extend in a horizontal plane. Alternatively, the plate-shaped elements have an acute angle of, for example, 1° to 10° to the horizontal plane, as a result of which the residence time of the liquid in the cooling area can be regulated and, for example, the liquid can flow downwards faster or more slowly during operation. The plate-shaped elements are, for example, substantially the same size. Furthermore, the plate-shaped elements are preferably arranged offset from one another in a horizontal direction, such that a meandering gas path is created which is delimited by the plate-shaped elements.Here, the plate-shaped elements and the housing each define a flow opening, which forms part of the gas path. Alternatively, the flow openings can be completely defined by the plate-shaped elements. In addition, liquid flows along the guide elements, so that the surface area of ​​the liquid is enlarged and thus the cooling performance is improved. The guide elements, in particular the plate-shaped elements, are preferably each formed in one piece, but can also be composed of two or more parts.

[0014] The guide elements, in particular the plate-shaped elements, preferably have tube openings which serve to receive a section of the at least one tube. If more than one tube is provided, a plurality of tube openings are preferably arranged in a plate-shaped element, which are particularly preferably arranged essentially along a straight line. The tube opening(s) preferably has(s) a larger diameter than the tube arranged therein, so that liquid can run down the outer wall of the tube.

[0015] To increase the stability of the device, the housing and the at least one tube are preferably connected to a common retaining element. If multiple tubes are provided, all tubes and the housing are preferably connected to a common retaining element.

[0016] Preferably, the cooling region is further delimited by a base element, which preferably has at least one backflow opening. This prevents the liquid, which is guided downwards in the cooling region, from flowing out unhindered and in an uncontrolled manner. With the help of the backflow opening(s), the liquid can be collected and drained off in a targeted manner, e.g. into a liquid container. During operation, the at least one backflow opening is completely or partially closed by the returning liquid, so that an overpressure can build up in the housing, which guides the gas to the external openings.

[0017] In order to enable a self-sufficient arrangement of the device, it is preferably provided that the at least one pipe is connected to a liquid container. This makes it possible for the device to be independent of external liquid connections and to function for a period of time without a liquid supply. The liquid container can, for example, be connected to a rain collection element so that rainwater can be collected in the liquid container and subsequently used for cooling. Preferably, a filter element is provided which is arranged to filter the rainwater before it is fed to the liquid container and thus prevent contamination of the liquid arranged in the liquid container. As a result, the device can be arranged essentially anywhere since no special infrastructure, in particular a liquid connection, is required.The liquid container preferably has a filling opening, which particularly preferably comprises a hose connection. This allows easy filling of the liquid container. The hose connection can be detachably connected to a hose. In particular, a hose can always be connected to the hose connection in order to be able to refill the liquid container when necessary. The liquid container is preferably connected to the return flow opening so that liquid passed through the cooling area reaches the liquid container and can be pumped back up the pipe. This creates a cycle in which the liquid can be used again and again and only the evaporated liquid needs to be replaced. The liquid container is preferably arranged on the underside of the housing and furthermore preferably connected to it.

[0018] Furthermore, an electrical energy storage device is preferably provided, which is preferably connected to a photovoltaic module. The electrical energy storage device can, for example, be a battery and / or an accumulator and is preferably connected to the fan and / or the pump in order to supply the fan or the pump with electrical energy. The energy storage device is preferably connected to at least one socket in order to make power available via the socket. The socket can, for example, be used to charge mobile phones and the like. Furthermore, the energy storage device can also be connected or connectable to other devices for supplying energy, for example to a WLAN hotspot. The photovoltaic module can, for example, be integrated into a sunshade, which is preferably arranged (partially) vertically above the housing. As a result, the surface of the sunshade is also used to generate electrical energy.This design allows the cooling device to be operated independently, i.e. without an external power connection.

[0019] In one embodiment, the cooling device is connected to a power supply. For example, the fan and / or pump can be connected directly to an external power supply. Alternatively or additionally, the electrical energy storage device can be connected or connectable to an external power supply.

[0020] Preferably, at least one plant container is provided. The plant container is preferably connected to the pipe or the housing, preferably detachably. In this case, the cooling device can be part of a small ecosystem consisting of one or more plants arranged in the plant container(s). The plant container(s) is / are preferably arranged around the housing, as a result of which good cooling can be achieved in all areas during operation. The plants can be arranged in such a way that the cool air stays in the area of ​​the cooling device for longer. Particularly preferably, the at least one plant container is arranged in such a way that a plant arranged in the plant container (e.g. the root area and / or the leaves of the plant) and / or the plant container is cooled by the air flow. This improves the environment of the plants, so that the well-being of the plant can be increased.Furthermore, a seat, such as a bench and / or a shading element, is preferably connected to the housing, preferably in a detachable manner. The cooling device preferably has connecting means which are designed to connect the cooling device, in particular the housing, to a seat, a shading element, a plant container or other elements. The connecting means can be designed, for example, to produce a positive and / or non-positive connection between the individual elements. This makes it possible to provide a modular system which enables the integration of a cooling device into a (small) ecosystem. In this case, all elements, i.e. in addition to the cooling device, e.g.The housing, in particular plant containers, seating devices and shading elements, has corresponding connecting means so that the individual elements can be connected and joined together as required. The elements, in particular a seat, are preferably made at least partially of concrete, stone or a similar material. In particular, the surface of the elements consists of concrete or stone. These materials improve the cooling effect of the cooling device.

[0021] The cooling device is preferably also connected to an advertising holder. The advertising holder can, for example, be a surface that is integrated into or connected to a shading element. This arrangement allows the cooling device to be used additionally as an advertising medium.

[0022] Furthermore, an irrigation system is preferably provided which is designed to supply the at least one plant container or the plants arranged therein with liquid. For this purpose, the irrigation system is preferably connected to the liquid container so that it can be used not only for cooling but also for irrigation. Alternatively, a further liquid container is provided which is connected to the irrigation system for irrigation. The further liquid container can, for example, be connected to a rain collection element so that rain can be collected in the further liquid container and then used for irrigation.

[0023] In order to further increase the cooling capacity of the device, more than one tube is preferably provided, the tubes each being arranged as described above to guide a liquid upwards to the respective outlet opening and then downwards through the cooling region. These tubes are preferably each connected to the same liquid container. The tubes are preferably arranged in a row within the common housing. In this case, the longitudinal axes of the tubes lie essentially on a common, imaginary straight line in plan view. The tubes further preferably each have essentially the same inner and outer diameter. The outlet openings of the individual tubes preferably lie in a common horizontal plane.Alternatively, the outlet openings of the tubes can be spaced apart from one another in the vertical direction in order to compensate for different pressure conditions due to the design of the liquid supply line to the tubes, so that during operation essentially the same amount of liquid emerges from each tube. A gap is preferably provided between the individual tubes, which can be, for example, 1 to 10 cm, particularly preferably 2 to 6 cm. This allows the liquid to flow down unhindered and the gas to be distributed better in the cooling area, thereby increasing the cooling capacity. Alternatively, a material, for example a fleece and / or a fabric, for example a plastic fabric, can be arranged at least partially between the individual tubes, thereby increasing the surface area of ​​the liquid and reducing the flow rate of the liquid. This increases the cooling capacity.The material is preferably arranged or drawn in a meandering shape between the pipes.

[0024] Preferably, the pipe(s) are at least partially coated on the outside and / or the housing on the inside, for example, with a fleece and / or a coating or paint that maximizes the surface area, for example, a waterproof, anti-slip coating. This improves the saturation of the gas and thus increases the cooling capacity.

[0025] If multiple pipes are provided, the pipes are preferably connected by a common connecting pipe. The fluid can be fed first into the connecting pipe and from there into the individual pipes. This arrangement simplifies the design, since, for example, only one pump can be provided to supply all pipes with fluid during operation.

[0026] Preferably, a control unit is provided which is designed to control the fan. The control unit is preferably designed to selectively switch the fan on or off and / or to change the power of the fan. Furthermore, the control unit is preferably designed to control the pump and selectively switch it on or off and / or to change the power of the pump. The control unit is preferably connected to an electrical energy storage device in order to be supplied with electrical energy.

[0027] In a preferred embodiment, an inlet temperature sensor is arranged to determine the temperature of the gas fed into the housing by the fan. Furthermore, a humidity sensor is preferably arranged to determine the humidity of the gas fed into the housing by the fan. Particularly preferably, the control unit is connected to the inlet temperature sensor and / or the humidity sensor so that the measured values ​​determined by the sensors can be fed to the control unit. The fan and / or the pump is controlled accordingly on the basis of these measured values. This makes it possible for the fan or the pump to be controlled depending on the prevailing ambient temperatures. For example, the cooling capacity is reduced when the surrounding gas is very humid, so that in this case the pump can be switched off. The fan can, for example.remain switched on to provide airflow. The cooling device can also be operated for a while without a pump or without liquid flow, e.g., for drying purposes, for hygiene reasons, or when the desired temperature in the area to be cooled has already been reached. In this operating mode, gas is passed through the cooling area, but no liquid. In particular, the liquid can first be removed from the cooling device, especially from the liquid container if necessary.

[0028] In order to be able to clean the cooling device in a simple manner, it is preferably provided that the tube(s) is / are detachably connected to the housing. The connection of the tube(s) to the housing can be provided, for example, via a holding element. The tube(s) are / are arranged, for example, in such a way that it / they can be pulled or lifted out of the housing using a handle. The tube(s) is / are preferably connected to guide elements. In this case, the tube(s) can be removed from the housing together with the guide elements. If a plurality of tubes are provided, the tubes are preferably (detachably) connected to one another and are arranged in such a way that they can be removed from the housing together. To enable removal, the tube(s) is / are preferably detachably connected to an intermediate tube which is connected to a liquid container.

[0029] To improve the cooling performance of the device, at least one nozzle is preferably provided which is arranged to inject a liquid, in particular water, into the cooling area. The at least one nozzle can, for example, be arranged in the housing. The nozzle is preferably connected to the liquid container so that liquid from the liquid container is sprayed through the nozzle. An atomized liquid with a large surface area can be injected into the cooling area through the nozzle(s). This injected liquid creates a mist in the cooling area and can also be discharged into the environment together with the gas from the external openings, so that a cooling mist is also created in the environment.

[0030] Alternatively or additionally, at least one nozzle can be provided which is arranged to inject a liquid, in particular water, into an area outside the housing, in particular into an air stream guided from the external openings. The nozzle is preferably connected to the liquid container, so that liquid from the liquid container is sprayed through the nozzle. An atomized liquid with a large surface area can be injected through the nozzle(s) into an area outside the housing, for example a lounge area. This injected liquid creates a cooling mist.

[0031] Preferably, the nozzle(s) are designed such that the resulting droplets are large enough not to penetrate the human lungs. The droplets are preferably larger than 30 μm in size. This can be achieved by appropriately dimensioning the nozzle.

[0032] Furthermore, the invention provides a cooling method in which a liquid, in particular water, is guided essentially vertically upwards in a tube, so that the liquid passes from an outlet opening of the tube into a cooling region formed by the tube and a housing enclosing the tube, wherein a gas, in particular air, is guided out of the cooling region through external openings arranged in the housing. The method can be carried out as described above and with the aid of the device according to the invention.

[0033] Preferably, the gas exits the external opening(s) at a speed of 0.5 to 2 m / s, preferably 1 to 2 m / s, particularly preferably approximately 1.5 m / s. Such an air flow is perceived by humans as particularly pleasantly cooling, especially at high temperatures. The speed is determined when the gas, in particular the air, exits the external opening.

[0034] The invention is explained in more detail below using an exemplary embodiment schematically illustrated in the drawing. Fig. 1 shows a first cooling device according to the invention, Fig. 2 shows a plan view of the device according to Fig. 1, Fig. 3 shows a second cooling device according to the invention, and Fig. 4 shows a third cooling device according to the invention.

[0035] Fig. 1 shows a first embodiment of a device according to the invention in a side view, comprising a substantially cuboid-shaped housing 1 which has a plurality of external openings 2 in the upper region. Within the housing 1, a plurality of substantially vertically running tubes 3 are arranged in a row. The tubes 3 each have an outlet opening 4 at the upper end. The outlet openings 4 are located in a common imaginary horizontal plane. A cooling region 5 is formed between the tubes 3 and the housing 1. The housing 1 has an inlet opening in which a fan 6 is arranged to guide a gas, in particular (ambient) air, into the cooling region 5 and to move it upwards therein to the external openings 2. In the cooling region 5, a plurality of guide elements 7 designed as substantially horizontally running plate elements are arranged.The guide elements 7 are each arranged slightly offset from one another, as a result of which flow openings 8 are formed between the side walls of the housing 1 and the guide elements 7. This enables a meandering gas path along the arrows 9 from the fan 6 in the upper region of the housing 1 to the external openings 2. A liquid container 10 is arranged vertically below the cooling region 5. The pipes 3 are connected to a common connecting pipe 11 and a pump 12, which are arranged such that a liquid, in particular water, can be guided from the liquid container 10 into the pipes 3 against gravity to the respective outlet openings 4. In particular, the pump 12 is located in the liquid container 10.The liquid container 10 is further connected to the cooling area 5 via return flow openings 13, which are arranged in a base element of the housing 1, and has a water connection 14, via which a liquid can be introduced into the liquid container 10. To control the fan 6 and the pump 12, a control unit 15 is provided, which is connected to the fan 6 via lines 16 and to the pump 12 via lines 17. The control unit 15 is further connected to a temperature sensor 18 and a humidity sensor 19, which are arranged such that the temperature and the humidity of the gas guided into the cooling area 5 by the fan 6 are determined and the corresponding measured values ​​can be fed to the control unit 15 via lines 20.Furthermore, a photovoltaic module 21 is arranged on the top side of the housing 1, which is connected to an electrical energy storage device 23 via a line 22, so that the generated electrical energy can be stored in the electrical energy storage device 23. The electrical energy storage device 23 is in turn connected via lines 24 to the control unit 15, the fan 6, and the pump 12 in order to supply them with electrical energy.

[0036] During operation, a liquid is fed by means of the pump 12 from the liquid container 10 along the arrows 25 to the pipes 3 and in the pipes 3 to the outlet openings 4. The liquid then flows downwards again due to gravity along the arrows 26 to the return openings 13 and back into the liquid container 10. The liquid flows along the outer sides of the pipes 3 and / or over the guide elements 7 and the flow openings 8. In the cooling region 5, the liquid flowing downwards comes into contact with the gas being guided upwards, as a result of which part of the liquid evaporates and the gas is cooled. The correspondingly cooler gas then exits the outer openings 2 and cools the environment. The liquid which has flowed back into the liquid container 10 can then be led again through the pipes 3 to the outlet openings 4, so that a circuit is created.

[0037] Fig. 2 shows a plan view of the cooling device according to Fig. 1, wherein the cover of the housing 1 is not shown. The guide elements 7 have tube openings 27 in which the tubes 3 run. The tube openings 27 in the guide elements 7 are somewhat larger than the outer diameter of the tubes 3, so that a liquid can flow unhindered downwards on the outside of the tubes 3. The tubes 3 are arranged in a row, i.e. the longitudinal axes of the individual tubes 3 are located on a common imaginary straight line. The tubes 3 are arranged at a distance from one another.

[0038] Fig. 3 shows a second embodiment of a device according to the invention. Here, the housing 1 is cylindrical and encloses only a single tube 3. The external openings 2 are arranged in the casing of the housing 1 over the entire height. In this embodiment, the fan 9 is arranged above the tube 3, in particular the outlet opening 4, so that incoming gas is guided along the arrows 9 downwards to the external openings 2 and along the arrows 28 through the external openings 2 into the environment. The liquid guided by the pump 12 in the tube 3 along the arrows 25 to the outlet opening 4, after exiting the outlet opening 4, also flows along the arrows 9 downwards to the return openings 13. In the upper region of the device, a control unit 15 as well as a temperature sensor 18 and a humidity sensor 19 are provided, similar to the embodiment according to Fig. 1.

[0039] Fig. 4 shows a third embodiment of a device according to the invention, which is essentially constructed like the embodiment shown in Fig. 3. In addition to the outlet opening 4 arranged in the upper region of the tube 3, this embodiment provides further outlet openings 4 in the casing of the tube 3. The arrangement of several outlet openings 4 increases the water surface in the cooling region 5 during operation and thus the cooling capacity.

Claims

Patent claims:

1. Device for cooling, comprising a housing (1) which has at least one outer opening (2), at least one substantially vertically extending tube (3), wherein the at least one tube (3) is surrounded by the housing (1) and the tube (3) has an outlet opening (4) which is arranged such that a liquid flows through the outlet opening (4) from the tube (3) into a through the tube (3) and the housing (1) limited cooling area (5), as well as a fan (6) which is designed to move a gas, in particular air, in the cooling area (5).

2. Device according to claim 1, characterized in that a pump (12) is provided which is designed to convey a liquid within the tube (3) to the outlet opening (4).

3. Device according to claim 1 or 2, characterized in that the tube (3) and the housing (1) are connected to a common holding element.

4. Device according to claim 1, 2 or 3, characterized in that the cooling area (5) is further delimited by a base element, which preferably has a return flow opening (13).

5. Device according to one of claims 1 to 4, characterized in that the tube (3) is connected to a liquid container (10).

6. Device according to one of claims 1 to 5, characterized in that an electrical energy storage device (23) which is preferably connected to a photovoltaic module.

7. Device according to one of claims 1 to 6, characterized in that at least one plant container is provided.

8. Device according to one of claims 1 to 7, characterized in that a seat is connected to the housing (1).

9. Device according to claim 7 or 8, characterized in that an irrigation system is provided which is designed to supply the at least one plant container or the plants arranged therein with liquid.

10. Device according to one of claims 1 to 9, characterized in that the at least one tube (3) is at least partially coated on the outside and / or the housing (1) is at least partially coated on the inside.

11. Device according to one of claims 1 to 10, characterized in that a control unit (15) is provided which is designed to control the fan (6).

12. Device according to one of claims 1 to 11, characterized in that an inlet temperature sensor is arranged to determine the temperature of the gas fed into the housing (1) by the fan (6).

13. Device according to one of claims 1 to 12, characterized in that a humidity sensor is arranged to determine the humidity of the gas conveyed by the fan (6) into the housing (1).

14. A method for cooling, in which a liquid, in particular water, is guided essentially vertically upwards in a pipe (3) so that the liquid passes from an outlet opening (4) of the pipe (3) into a cooling area (5) formed by the pipe (3) and a housing (1) enclosing the pipe (3), wherein a gas, in particular air, is guided out of the cooling area through external openings (2) arranged in the housing (1).

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