Heat exchanger panel for controlling space temperature

Abstract

The invention relates to a heat exchanger panel comprising a heat exchanger. The heat exchanger has a medium line for conducting a heat exchange medium from a medium inlet to a medium outlet and a thermally conductive heat exchanger wall connected to the medium line, and the heat exchanger wall forms an interface facing the space, which interface can reach a lower temperature than the thermal load. At least one surface element is arranged between the boundary surface and the room, which surface element is at least partially permeable to thermal radiation and almost impermeable to air such that an almost airtight middle space is formed between the boundary surface and the surface element. The heat exchanger is characterized in that a condensation chamber is formed in a region adjacent to the medium inlet, adjacent to the medium line and on a side facing away from the heat exchanger wall with respect to the surface element, and in that the heat exchanger wall has at least one opening such that the central space is connected to the condensation chamber in a communicating manner. In the condensation chamber, a capillary material is arranged or at least one capillary activation element is provided, which is directed to the outer surface of the heat exchanger panel, such that liquid condensed in the condensation chamber is delivered to the outside due to the capillary action of the capillary material or capillary activation element, and drying can be performed outside again.

Description

Technical Field

[0001] The present invention relates to a heat exchanger panel for controlling the temperature of a room and a method for controlling the temperature of a room using such a heat exchanger panel. Background Art

[0002] It is known to control the temperature of a building (i.e. for heating and cooling) by heating or cooling building components, for example by means of heating or cooling pipe regulators. In this way, the components can transfer heat to the room air and surrounding surfaces by radiation exchange or absorb heat from the room air and surrounding surfaces and the heat load in the room, thereby influencing the indoor climate. Ceiling, wall panels or underfloor heating systems are usually equipped with water-guided pipe regulators or electrically operated heating wires. This can be installed directly during the construction of the building or can also be retrofitted to existing buildings.

[0003] DE 10 2015 211 473 A1 and WO 2016 / 207141 A2 describe a device for air conditioning a room. The device comprises a radiator having a surface facing the room. The surface temperature is lower than the temperature of the room by means of the radiator. The radiator is implemented, for example, by a cooling pipe. Water, a water / glycol mixture or a refrigerant can flow through the cooling pipe. Instead of the cooling pipe, an electrical cooling component can also be provided, for example via a Peltier element. The device also comprises a surface element between the surface and the room. The surface element is practically impermeable or impermeable to indoor air and water vapor, but is transparent to thermal radiation. In addition, a dehumidification device is disclosed, which is arranged in the area between the surface and the room to remove small amounts of moisture. In addition, the dehumidification device can be an adsorbent and / or a heating device and / or a fleece.

[0004] In this known heat exchanger arrangement, fleece is applied over the entire surface of the radiator and extends over the sides of the heat exchanger arrangement into the rear region in order to dry in this area. The problem here is that if the fleece is arranged over the entire surface, a large amount of water can accumulate, leading to an uncontrolled state. As a result, the moisture is not always discharged into the rear region of the heat exchanger arrangement as intended, but can partially remain in the arrangement. This impairs the performance of the heat exchanger arrangement and can lead to damage to the arrangement in the long term. Since such a heat exchanger arrangement should be designed for long, continuous operation, this is a serious problem.

[0005] US 3 905 203 A discloses an air cooling and condensate removal device comprising a thin plate. The plate has a fine, wettable, serrated or porous surface on one side. The other side of the plate is thermally insulated. A cooling plate is arranged inside the plate, for example with a circulating liquid coolant. The coolant is used to cool the wettable surface, causing moisture in the air to condense. The resulting condensate is discharged via a capillary system.

[0006] JP H06-323577A discloses a cooling device for homes and offices that absorbs heat radiation to cool a room. The cooling device comprises a panel that is insulated on the wall side. A thin polymer layer is provided on the panel on the room side, which allows heat radiation to pass through the panel and protects the panel from direct contact with the air. The panel is cooled by circulating water.

[0007] CN 111 912 066A describes a radiant air conditioner. The radiant air conditioner comprises an energy transfer layer facing away from the room, a damping layer and a radiant panel facing the room. The energy transfer layer is in thermal contact with the radiant panel via the damping layer and can be used to change the temperature of the radiant panel. An adjustment device is provided, by which the thickness of the damping layer can be adjusted. This allows the temperature of the radiant panel to be accurately adjusted.

[0008] Based on this state of the art, the present invention is based on the task of providing a heat exchanger panel for controlling the temperature of a room, which controls the temperature of the room in an energy-saving manner and allows a more controlled formation of condensate between a radiator and a surface element arranged at a distance from the radiator.

[0009] This object is achieved by means of the subject matter having the features of the independent claim. Advantageous embodiments are given in the dependent claims. Summary of the invention

[0010] According to the invention, therefore, a heat exchanger panel is provided, comprising a heat exchanger. The heat exchanger has a medium line for conducting a heat exchange medium from a medium inlet to a medium outlet and a heat-conducting heat exchanger wall connected to the medium line. The heat exchanger wall forms a boundary surface facing the room, which boundary surface can reach a lower temperature than the heat load. At least one surface element is arranged between the boundary surface and the room, which surface element is at least partially permeable to thermal radiation and is practically impermeable to air, so that a practically airtight intermediate space is formed between the boundary surface and the surface element.

[0011] The heat exchanger panel is characterized in that a condensation chamber is formed in a region adjacent to the medium inlet, adjacent to the medium pipeline and on the side facing away from the heat exchanger wall relative to the surface element, and the heat exchanger wall has at least one opening so that the middle space is connected to the condensation chamber in a communicating manner. Capillary material is arranged in the condensation chamber or at least one capillary activation element is provided, which is guided to the outer surface of the heat exchanger panel so that the liquid condensed in the condensation chamber is transported to the outside due to the capillary action of the capillary material or the capillary activation element so as to be dried outside. In this sense, the condensation chamber is a cavity without other objects so that air can enter the cavity and the moisture contained in the cavity can condense.

[0012] The described heat exchanger panel has a heat exchanger and a central space formed between the boundary surfaces and the surface elements of the heat exchanger wall. In the theoretical and idealized design of the heat exchanger panel, this central space is completely sealed, so that there is no air exchange and no water vapor ingress at a vapor pressure gradient with the environment. This is difficult to achieve in practice, which is why there is almost always air exchange, water vapor ingress and moisture ingress.

[0013] When the heat exchanger panel is exposed to the temperature difference between the cold boundary surface and the warm room air during operation, moisture accumulates over time in the intermediate space, condensing on the cold boundary surface. It must also be considered that such heat exchanger panels are used in continuous operation for a long time. Due to the partial pressure gradients of different climates, the main transport mechanism for moisture entry is water vapor diffusion. The water vapor partial pressure in the room is higher than the water vapor partial pressure in the intermediate space.

[0014] In principle, the saturation pressure of the water vapor present in the condensation chamber will be lower than in the rest of the nearly airtight intermediate space. The resulting diffusion pressure gradient causes a continuous flow of material from any entry point of the water to the condensation chamber. Due to the small amount of water vapor, the natural vapor pressure equalization is sufficient to transport the liquid from the condensation chamber to the outer surface of the heat exchanger panel by means of the capillary action of the capillary material, where it subsequently evaporates. This enables continuous drying of the intermediate space.

[0015] WO 2016 / 207141 A2 does show a heat exchanger panel in which a fleece is arranged along the boundary surface of the radiator and extends outwards and can transport moisture to the outside. However, this known heat exchanger panel does not have a condensation chamber in which air can accumulate and cool, condensing the moisture contained in the air.

[0016] The capillary material can be a nonwoven or woven fabric or an absorbent material. The capillary material can be, for example, a polymer film, in particular a polyamide film or a polyester film.

[0017] The term "capillary material" refers to a material that is substantially capable of absorbing liquids (in this case, water). These materials are also characterized in that they have pores, through which a structure is formed, whereby liquids move within the material primarily due to capillary forces. Capillary tension is a special form of surface tension. These pores can be macroscopic or microscopic pores at the molecular level, such as hollow fibers in polyamide or polyester membranes. To a human observer, a polyamide membrane appears to be a smooth, non-porous membrane. However, the membrane has very small pores that are suitable for absorbing water and allowing it to diffuse through the membrane. Due to such smaller pores, molecular interactions may also affect the diffusion of water in the membrane.

[0018] Capillary channels can also be incorporated into the heat exchanger wall so that no fleece or fabric is needed. In this case, the heat exchanger wall also forms the capillary material and leads to the outer area of ​​the heat exchanger panel. For example, a laser can be used to machine the capillary channels into the surface of the heat exchanger wall. Preferably, the capillary channels are formed in the surface of the heat exchanger wall facing the condensation chamber and only reach as far as the condensation chamber in the heat exchanger wall.

[0019] This aims to cool the boundary surfaces of the heat exchanger wall. A heat exchanger wall is a wall with good thermal conductivity, whereby the boundary surface of the heat exchanger wall represents the surface of the heat exchanger in the direction of the mid-space. The heat exchanger wall serves to produce thermal contact between the individual elements of the medium line, thereby increasing the cooling surface of the heat exchanger. The boundary surfaces are cooled by the cold medium passing through the medium line. As a result, the medium line is cooled first, and the surface of the medium line as well as the heat exchanger wall and the interface become cold due to heat conduction. The medium line has the coldest point close to the medium inlet. The further the medium line extends in the direction of the medium outlet, the hotter it will become.

[0020] For example, the heat load in a room may be caused by solar radiation or heat emitted by people. The infrared thermal radiation emitted by the heat load is absorbed by the boundary surfaces and removed from the room by the cold medium.

[0021] In the area adjacent to the medium inlet, a condensation chamber is arranged adjacent to the medium pipeline. The condensation chamber is a small air chamber formed on the side facing away from the heat exchanger wall relative to the surface element. In this area, the heat exchanger wall has at least one opening so that the middle space is connected to the condensation chamber. Therefore, the moisture accumulated in the middle space enters the condensation chamber from the middle space through the opening, and the moisture condenses on the cold medium pipeline in the condensation chamber. The capillary material arranged in the condensation chamber is guided to the outer surface of the heat exchanger panel in a vapor diffusion and airtight manner, and due to the capillary action of the capillary material, the capillary material transports the condensed liquid to the outside, where the capillary material can be dried in the air. The pores of the capillary material are very fine, so that only a very small amount of moisture enters the capillary material by diffusion, whether inside or outside the heat exchanger panel. This means that practically no water vapor can penetrate from the outside, or practically no gas flows from the outside to the condensation chamber. If the pores are filled with water in the case of condensation, they are impermeable to vapor diffusion. Since the condensed water is distilled water, there is no risk of pore clogging. Furthermore, no liquid flows from the outside through the capillary material into the condensation chamber because the water vapor pressure and material moisture of the capillary material inside the condensation chamber are greater than the water vapor pressure and material moisture on the outer surface.

[0022] Due to the different cold distribution of the above-mentioned medium pipelines, the moisture accumulated in the middle space is not evenly distributed in the entire middle space, but mainly condenses at the coldest point of the medium pipeline. Since the moisture in the air is removed at this time, the air with higher humidity flows in this direction and the moisture condenses again.

[0023] With the described arrangement, it is not necessary to arrange the capillary material along the entire heat exchanger. Use is made of the fact that moisture condenses mainly in the medium inlet region on the medium line. For this reason, a condensation chamber is provided in this region of the medium line for collecting moisture. Therefore, it is only necessary to provide capillary material here in order to effectively remove moisture in a controlled manner.

[0024] The condensation chamber is arranged on the side facing away from the heat exchanger wall relative to the surface element, and is provided with at least one opening, which connects the middle space with the condensation chamber in a communicating manner, which means that the heat radiation transmitted through the surface element does not directly contact the medium pipeline. Therefore, the medium pipeline is shielded from most of the heat radiation by the heat exchanger wall and is kept in a cooled state.

[0025] The medium line can consist of one or more straight line sections or a meandering line.

[0026] In one embodiment of the heat exchanger panel, the heat exchanger has a tortuous medium line.

[0027] The medium line is preferably designed in such a way that it has a discharge line and a supply line with a larger cross section, which are arranged substantially parallel to one another, and a connecting line with a smaller cross section is arranged between them. The connecting lines extend substantially parallel to one another and connect the supply line and the discharge line. These connecting lines can be capillaries, and such a line system with capillaries is also referred to as a capillary mat, in particular when the lines are made of plastic.

[0028] The heat exchanger panel may comprise a ceiling or wall panel in which the medium line is embedded. The intermediate line is preferably integrated into the ceiling or wall panel so that the material of the ceiling or wall panel fills the space between the individual elements of the medium line. The space between the boundary surface and the panel elements may be delimited on the side by edge elements.

[0029] The ceiling or wall panels and edge elements can be made of a substantially diffusion-proof material. This design minimizes the heat input into the media lines and the moisture input into the space between the boundary surface and the panel elements.

[0030] The boundary surface of the heat exchanger wall is particularly relevant for the temperature control of the room. This boundary surface can be smooth or rough to influence its absorption or reflection behavior. For example, the heat exchanger wall can be a metal layer or contain a metal alloy or consist of a metal alloy. The performance of the heat exchanger panel according to the invention can be improved by a high thermal conductivity and / or a high heat capacity of the interface and a high absorption in the radiation range of temperature radiation with a wavelength of 2 to 20 μm. On the other hand, the response behavior of the heat exchanger panel may be influenced by a low or high heat capacity of the boundary surface or by an additionally introduced or attached latent heat storage material (PCM).

[0031] The region forming the condensation chamber adjacent to the medium inlet may comprise at least 10% or at least 20% or at least 30% of the length of the medium line.

[0032] This design ensures that the condensate chamber covers the area of ​​the media line that is coldest and where most of the condensate accumulates. This confined area, where the capillary material is also located, means that no large amounts of water accumulate and the condensate can be drained in a controlled manner.

[0033] In a preferred embodiment using a capillary tube mat with a collection line, a condensation chamber is formed along a large part of the collection line through which the cooling medium is supplied to the capillary tube mat. Preferably, the condensation chamber extends over at least 60%, in particular at least 70%, particularly preferably at least 90% of the area of ​​the manifold.

[0034] Since the condensation cavity, unlike the surface of the heat exchanger walls, does not receive any heat radiation, the condensation cavity is substantially cooler than the heat exchanger walls.

[0035] Only parts of the area may be covered by the capillary material, but these areas may even be colder due to the absence of the capillary material.

[0036] A plurality of openings may be formed in the heat exchanger wall, whereby the openings have a minimum clear width of at least 0.2 mm or at least 0.3 mm or at least 0.4 mm and / or a maximum clear width of 1.5 mm or at most 1.4 mm or at most 1.3 mm. The openings may also be designed as elongated or longitudinal slits or a combination of slits and circular openings. The heat exchanger wall may also be made of a diffusion opening material in the region of the condensation chamber.

[0037] In a preferred embodiment of the heat exchanger panel, the heat exchanger wall has openings in the form of perforations. The pore size of the perforations is selected so that water vapor can flow through, but liquid water cannot flow through. This prevents water from dripping from the condensation chamber towards the surface elements and accumulating therein. In the long run, this would lead to damage to the heat exchanger panel.

[0038] At wavelengths between about 3 μm and about 30 μm or between about 6 μm and about 20 μm, the surface element may exhibit, at least in a partial range, a transmittance of more than about 50% or more than about 70% or more than about 90%.

[0039] The surface element separates the heat exchange at the boundary surface of the heat exchanger wall by means of heat radiation and heat conduction. As a result, the boundary surface can be cooled to a dew point temperature below the humidity of the room air. Thus, heat can be efficiently extracted from the room by heat radiation. The surface element can, for example, contain a polymer or consist of a polymer.

[0040] The wavelength range mentioned contains the majority of the thermal radiation energy of a black body radiator at about 300 K. This wavelength range may shift if the heat exchanger panel according to the invention is used in a warmer climate. Shorter wavelengths may also occur if the room has special heat sources, such as electrical or electronic devices. In at least a part of the wavelength range mentioned, a transmittance of about 50% to about 90% ensures that a sufficient proportion of the thermal radiation reaches the boundary surface of the heat exchanger wall and can be transported out of the room in this way. At the same time, the transparency of the surface element and the associated low absorptivity and emissivity in the above-mentioned wavelength range of the material ensure that the surface element emits little thermal energy to the boundary surface, so that it does not cool down and therefore does not fall below the dew point of the humidity of the room air.

[0041] At the same time, the surface elements may be at least partially reflective and / or absorbing in the visible spectral range in order to achieve a visually appealing design.

[0042] A groove can be provided which completely or almost completely surrounds the ceiling or wall panel on the side facing the ceiling or wall and / or completely or almost completely surrounds the medium line and the condensation chamber on the side facing the ceiling or wall. The groove can be made of a diffusion-proof material, preferably of a metal such as aluminum.

[0043] Such a recess, which is usually formed by an incompletely diffusion-proof insulating material, thus isolates the ceiling or wall panel and the subsequent condensation chamber from the surroundings on the ceiling or wall side. If the recess only surrounds the medium line and the condensation chamber, the medium line and the condensation chamber are particularly isolated from the surroundings.

[0044] A thermally insulating and / or sound-absorbing layer and / or a layer impermeable to water vapor may be provided on the side of the heat exchanger panel facing away from the room.

[0045] The thermal insulation layer can, for example, reduce energy losses from the room to the outside or to unheated volumes and surfaces. The sound absorbing layer reduces the sound level in the room by absorbing sound waves and converting them into heat energy. Among other things, this improves speech intelligibility in the room. The sound absorbing layer is, for example, a sound absorbing foam and is preferably made of the same material as the diffusion-proof thermal insulation material. The sound absorbing foam has a larger open-pore surface than the thermal insulation material. The water vapor diffusion-proof layer prevents moisture from penetrating into the ceiling and / or walls of the room or onto the surfaces of the heat exchanger.

[0046] Electronic components such as sensors, semiconductors, light emitting diodes (LEDs) and / or other active or passive components or heat or hygroscopic storage materials can be arranged between the heat exchanger wall and the surface element and / or on the side of the surface element facing the room.

[0047] These components may also be electrothermal components, such as Peltier elements. In certain embodiments, PCM materials may also be used for thermal buffering.

[0048] For decorative and technical purposes, electronic components such as LEDs can be provided. For example, a heat exchanger panel according to the invention can be used not only to control the temperature of a room, but can also contribute to the visual design of the room with lighting elements and workplace lighting. In warehouses or laboratories where constant temperature and / or humidity are very important, sensors can be provided to permanently monitor these values.

[0049] Furthermore, a method according to the invention is provided for cooling a room having a heat exchanger panel as described above, the method comprising the following steps,

[0050] Conducting cold heat exchange medium in the medium pipeline,

[0051] Condensate moisture in the condensation chamber adjacent to the medium pipeline,

[0052] The portion of the capillary material arranged in the condensation chamber absorbs moisture, and

[0053] The moisture is removed to the outer surface of the heat exchanger panel by means of the capillary action of the capillary material.

[0054] The advantages described above with reference to the air intake system apply analogously to the method according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Now other tasks, features and advantages of the present invention will become clear from the exemplary embodiments shown in the specification and the accompanying drawings. These are manifested in:

[0056] Figure 1 is a schematic diagram of a heat exchanger panel according to a first embodiment of the invention, which is integrated into a ceiling or wall panel in a side view,

[0057] Figure 2 is a schematic diagram of a heat exchanger panel according to a first embodiment of the invention, in a side view, which is integrated into a ceiling or wall panel, having a groove in the first embodiment,

[0058] Figure 3 is a schematic diagram of a heat exchanger panel according to the invention in a first embodiment, in a side view, which is integrated into a ceiling or wall panel, with a groove in a second embodiment,

[0059] Figure 4 is a schematic diagram of a heat exchanger panel according to a second embodiment of the invention, which is integrated into a ceiling or wall panel in a side view,

[0060] Figure 5 is a schematic diagram of a heat exchanger panel according to a third embodiment of the invention, in a side view, which is integrated into a ceiling or wall panel,

[0061] Figure 6 is a schematic diagram of a heat exchanger panel according to a fourth embodiment of the invention, in a side view, which is integrated into a ceiling or wall panel,

[0062] Figure 7 is a schematic diagram of a heat exchanger panel according to a first embodiment of the invention, in which the heat exchanger panel is integrated into a ceiling or wall panel and connected to a heat exchanger,

[0063] Figure 8 is a schematic diagram of a heat exchanger panel according to a second embodiment of the invention, which is integrated into a ceiling or wall panel and connected to a heat exchanger, and

[0064] Fig. 9 is a schematic diagram of a heat exchanger panel according to a third embodiment of the invention, which is integrated into a ceiling or wall panel and connected to a heat exchanger. DETAILED DESCRIPTION

[0065] In the following, the first embodiment is used as an example ( Figures 1 to 3 ), a heat exchanger panel 1 according to the invention for controlling the temperature of a room 2 is described in more detail. The room 2 has a heat load.

[0066] The heat exchanger panel 1 comprises a heat exchanger 3. The heat exchanger 3 is integrated into a ceiling or wall panel 4. The heat exchanger 3 has a medium line 5. The medium line 5 comprises a discharge line 24 and a supply line 23 having a large cross section. The supply line 23 and the discharge line 24 are arranged approximately parallel to each other. A connecting line 6 having a smaller cross section is arranged between them. The connecting line 6 extends approximately parallel to each other and connects the supply line 23 and the discharge line 24. The connecting line 6 is preferably a capillary tube. The supply line 23, the discharge line 24 and the connecting line 6 are preferably made of plastic so that they together form a capillary mat (mat) ( Figure 7 ). The medium pipeline 5 and / or the connecting pipeline 6 can also be made of metal.

[0067] The heat exchanger 3 can also have a plurality of medium lines 5, which have sections of larger cross-section and are connected to one another by means of connecting lines 6 ( Figure 8 In this case, a plurality of medium pipelines 5 are arranged parallel to one another and are each connected to one another via a plurality of connecting pipelines 6, which are arranged perpendicular to the medium pipelines and also extend parallel to one another. The connecting pipelines 6 are preferably capillaries. The heat exchanger 3 may also have meandering medium pipelines 5 ( Fig. 9 ).

[0068] The medium is a refrigerant in the form of a fluid for absorbing heat. For example, the refrigerant may be cooling water. The refrigerant (eg, R32 or R290) may also flow directly through the heat exchanger 3.

[0069] The medium line 5 of the heat exchanger 3 has a medium inlet 7 and a medium outlet 8. The heat exchange medium usually flows through the medium line 5 from the medium inlet 7 in the direction of the medium outlet 8.

[0070] A heat pump 9 is provided for heating via a pipe 10 ( Figures 7 to 9) supplies the cooled heat exchange medium to the heat exchanger 3. The heat exchange medium is fed from the pipe 10 directly into the medium inlet 7 of the medium pipeline 5 of the heat exchanger 3. After the heat exchange medium has passed through the medium pipeline 5, it leaves the medium pipeline 5 through the medium outlet 8 and returns to the heat pump 9. The heat pump 9 and the heat exchanger 3 form a loop. For example, a single heat pump 9 can be provided in the building, which is connected to a large number of heat exchanger panels 1 on different floors by means of several pipes 10 and provides the heat exchanger 3 with a cooled heat exchange medium. Alternatively, any radiator can be integrated into the loop. It is also possible to have solar cooling, geothermal probes or groundwater cooling systems and regenerative cooling sources.

[0071] The medium line 5 of the heat exchanger 3 is inserted into the ceiling or wall panel 4 so that the material of the ceiling or wall panel 4 fills the spaces between the individual elements of the medium line 5. This material is preferably a diffusion-proof, heat-insulating material.

[0072] The heat exchanger 3 has a heat-conducting heat exchanger wall 11, which is thermally connected to the medium line 5 and the connecting line 6, so that the heat exchanger wall 11 is temperature-controlled by the medium line 5. On the side facing the room 2, the heat exchanger wall 11 forms a boundary surface 12. The boundary surface 12 represents the surface of the heat exchanger 3 facing the room 2. The temperature exchange between the room 2 and the heat exchange medium of the medium line 5 flowing through the heat exchanger 3 essentially takes place at the boundary surface 12. The heat exchanger wall 11 is a layer made of metal or another material with good thermal conductivity. With the help of the heat exchanger wall 11, thermal contact is established between the individual elements of the medium line 5, thereby increasing the cooling surface of the heat exchanger 3.

[0073] The medium line 5 has the coldest point in the region of the medium inlet 7. The further the medium line 5 extends in the direction of the medium outlet 8, the hotter it becomes. For this purpose, a condensation chamber 13 is formed in the region adjacent to the medium inlet 7, adjacent to the medium line 5 and on the side facing away from the heat exchanger wall 11 relative to the boundary surface 12. The condensation chamber 13 is a small air chamber.

[0074] The ceiling or wall panel 4 has a recess 26 on the ceiling or wall side, which completely or almost completely surrounds the ceiling or wall panel 4 on the side facing the ceiling or wall ( Figure 2). Furthermore, the groove 26 projects into the side region of the ceiling or wall panel 4 so that the outer surface 19 is also surrounded. In the region of the edge element 15, the groove 26 is connected to the ceiling or wall panel 4 in a diffusion-proof manner, preferably by bonding or welding. The groove 26 is made of a diffusion-proof material, such as a metal such as aluminum. However, the groove can also be made of plastic or by a coating on the inside of the ceiling or wall panel 4. Thus, the groove 26 isolates the ceiling or wall panel 4 and subsequently the condensation chamber 13 from the surroundings on the ceiling or wall side, which is usually formed by an insulating material that is not completely diffusion-proof.

[0075] It is also possible that the groove 26 surrounds only the medium line 5 and the condensation chamber 13, so that the medium line 5 and the condensation chamber 13 are particularly isolated from the environment ( Figure 3 ).

[0076] In one possible embodiment ( Figure 1 ), the medium line 5 is arranged in the ceiling or wall panel 4 at a small distance from the heat exchanger wall 11. The intermediate space created by the distance between the medium line 5 and the heat exchanger wall 11 forms a condensation chamber 13. In order to ensure a good thermal connection between the medium and the heat exchanger wall 11, the connecting line 6 is connected to the heat exchanger wall 6 and is therefore in direct thermal contact with the heat exchanger wall 6 (not shown).

[0077] If a hose system is used instead of a capillary system representing the medium line 5 , a wall 25 made of metal, such as aluminum, is provided, for example, which connects the medium line 5 and the heat exchanger wall 11 to one another in order to establish a good thermal connection between the medium line 5 and the heat exchanger wall 11 .

[0078] In another possible embodiment ( Figure 4 ), the medium pipeline 5 is arranged directly adjacent to the heat exchanger wall 11 so as to be directly thermally connected to the heat exchanger wall. The condensation chamber 13 is arranged laterally adjacent to the medium pipeline 5, at a small distance from the heat exchanger wall 11. Preferably, the condensation chamber 13 is arranged on the side of the medium pipeline 5 that is closer to one edge of the heat exchanger 3. However, the condensation chamber 13 can also be arranged on both sides of the medium pipeline 5. This has the advantage that no installation error occurs in which the flow and return directions are opposite.

[0079] The surface element 14 is arranged on the side of the heat exchanger wall 11 facing the room 2 at a distance from the boundary surface 12. The surface element 14 is at least partially transparent to thermal radiation and practically impermeable to the diffusion of air and water vapor from the room 2. The surface element 14 may, for example, contain or consist of a polymer.

[0080] In the side regions of the heat exchanger panel 1, edge elements 15 are arranged between the heat exchanger wall 11 and the surface elements 14. The edge elements 15 together with the surface elements 14 ensure that a substantially gas-tight gap 16 is formed between the heat exchanger wall 11 and the surface elements 14.

[0081] The heat exchanger wall 11 has a plurality of openings 17 in the region of the condensation chamber 13. The middle space 16 is connected to the condensation chamber 13 in a communicating manner by means of the openings 17. The openings 17 are formed, for example, by perforations in the heat exchanger wall 11. The pore size of the perforations is selected so that water vapor can flow through, but liquid water cannot flow through. The openings 17 can be formed as elongated or longitudinal slits or as a combination of slits and circular openings. The heat exchanger wall 11 can also be made of a diffuse opening material in the region of the condensation chamber 13. The condensation chamber 13 can also be completely exposed.

[0082] The capillary material 18 is arranged in the condensation chamber 13. The capillary material 18 can be a nonwoven or woven fabric or an adsorbent material. The capillary material 18 can be a polyamide film or a polyester film, for example. The condensation chamber 13 can be completely filled with the capillary material 18.

[0083] In the present embodiment, the capillary material 18 is a fleece. Therefore, the at least one opening 17 of the heat exchanger wall 11 can also be covered with the fleece 18.

[0084] The fleece 18 leads to the outer surface 19 of the heat exchanger panel 1. Here, the fleece 18 extends through the ceiling or wall panel 4 and the groove 26 to the outer surface 19. The fleece 18 is bonded to the ceiling or wall panel 4 and the groove 26 in such a way that a vapor diffusion and airtight connection is formed as far as possible between the fleece 18 and the ceiling or wall panel 4 or the groove 26. The adhesive is viscous enough to reliably bond the surface of the fleece 18 to the ceiling or wall panel 4 or the groove 26, but not so viscous that it can penetrate into the pores of the fleece 18 and block the gaps.

[0085] If a cold heat exchange medium flows through the medium line 5, the medium line 5 cools first and the surface of the medium line 5 cools due to heat conduction. As a result, the heat exchanger wall 11 connected to the medium line 5 cools and thus the boundary surface 12 cools.

[0086] Since the medium line 5 has its coldest point in the region of the medium inlet 7, the moisture in the middle space 16 is unevenly distributed in the middle space 16. The moisture condenses mainly at the coldest point of the medium line 5. Since the moisture in the air is removed at this time, air with higher humidity flows in this direction and the moisture condenses again. The moisture passes through the opening 17 of the heat exchanger wall 11. The condensed moisture is absorbed by the fleece 18 and is transported to the outside due to the capillary action of the fleece 18, where it can dry in the air.

[0087] Instead of the capillary material 18, capillary channels (not shown) can also be provided in the heat exchanger wall 11. This means that no fleece or fabric is required. In this case, the heat exchanger wall 11 also forms the capillary material 18 and leads to the outer surface 19 of the ceiling or wall panel 4. For example, the capillary channels can be machined into the surface of the heat exchanger wall 11 using a laser. The capillary channels have a thickness of at least 0.1 mm. 2 Or at least 0.3mm 2 Or at least 0.5mm 2 Circular surface and / or up to 1mm 2 Or at most 0.75mm 2 Or at most 0.5mm 2 circular surface.

[0088] The heat radiation emitted from the heat load in the room 2 is at least partially transferred through the surface element 13, from which it passes through the middle space 16 to the boundary surface 12 of the heat exchanger wall 11, where the heat radiation is absorbed. The heat is absorbed and dissipated by the heat exchange medium flowing through the medium pipeline 5 via heat conduction. Since the heat exchanger wall 11 also extends over the condensation chamber 13 and has only openings 17 that are only permeable to moisture, the condensation chamber 13 is shielded from most of the heat radiation. As a result, the condensation chamber 13 and the medium pipeline 5 are kept in a relatively cold state, or the coldest point is formed in the closed middle space 16.

[0089] According to the third embodiment ( Figure 5 ), a sound absorbing layer 20 is incorporated into the material of the ceiling or wall panel 4. The sound absorbing layer 20 is preferably a sound absorbing foam and is preferably made of the same material as the non-diffusion insulation material of the ceiling or wall panel 4. Compared with insulation material, the sound absorbing foam has a larger open cell surface. The sound absorbing layer 20 reduces the sound level and reverberation time in the room 2.

[0090] According to the fourth embodiment ( Figure 6 ), the lighting element 21 is arranged on the side of the surface element 14 facing away from the room 2.

[0091] The lighting elements 21 can be arranged on the side of the surface element 14 facing the room 2, and also on the side of the surface element 14 facing away from the room 2. The lighting elements 21 are, for example, LEDs, which are mounted at a distance from each other on the surface element 14. In this way, the ceiling or wall panel 4 can not only be used to control the temperature of the room 2, but also contribute to the visual and technical design of the room 2 with the lighting elements 21. The lighting elements 21 are preferably connected to a control device 22. The control device 22 can be controlled by means of a remote control. For example, the lighting elements 21 can be turned on and off individually, or the brightness of the lighting elements 21 can be adjusted individually.

[0092] In addition to or instead of the lighting elements 21 , other electronic components (not shown), such as sensors, semiconductors, LEDs and / or other active or passive components or heat storage materials may also be arranged on the surface element 14 .

[0093] The lighting elements 21 and / or further electronic components are arranged in such a way that a sufficiently large proportion of the thermal radiation required for the invention can pass through the surface element 14 and reach the boundary surface 12. The lighting elements 21 and / or further electronic components can also be designed in such a way (i.e. like the surface element 14) that they are at least partially permeable to thermal radiation and practically impermeable to air.

[0094] In the following, a method according to the invention is explained for a heat exchanger panel 1 according to the exemplary embodiment of the invention described above.

[0095] A cold heat exchange medium is supplied via the medium line 5 of the heat exchanger 3 of the heat exchanger panel 1 in order to cool the heat exchanger panel.

[0096] The moisture in the central space 16 of the heat exchanger panel 1 is condensed in the condensation chamber 13 adjacent to the medium pipeline 5 .

[0097] The moisture accumulated in the condensation chamber 13 is absorbed by the section of the capillary material 18 arranged in the condensation chamber 13 .

[0098] Due to the capillary action of the capillary material 18 , the moisture in the capillary material 18 is conducted and discharged to the outer surface 19 of the heat exchanger panel 1 .

[0099] This is where the moisture is released into the environment.

[0100] Reference numerals list

[0101] 1 Heat exchanger panel

[0102] 2 rooms

[0103] 3 Heat exchanger

[0104] 4 Ceiling or wall panels

[0105] 5 Medium pipeline

[0106] 6 Connect the cables

[0107] 7 Media inlet

[0108] 8 Media outlet

[0109] 9 Heat Pump

[0110] 10 Pipeline

[0111] 11 Heat exchanger wall

[0112] 12 Boundary surface

[0113] 13 Condensation chamber

[0114] 14 Surface elements

[0115] 15 Edge Components

[0116] 16 Central Space

[0117] 17 Opening

[0118] 18 Capillary material

[0119] 19 Boundary Surface

[0120] 20 Sound absorption layer

[0121] 21 Lighting elements

[0122] 22 Control unit

[0123] 23 Supply lines

[0124] 24 Discharge line

[0125] 25 wall

[0126] 26 grooves.

Claims

1. A heat exchanger panel (1), comprising a heat exchanger (3), the heat exchanger comprising: a medium line (5) for conducting a heat exchange medium from a medium inlet (7) to a medium outlet (8), and a heat-conducting heat exchanger wall (11) which is connected to the medium line (5) and which forms an interface (12) facing the room (2) and which is capable of reaching a lower temperature than the heat load, wherein at least one surface element (14) is arranged between the boundary surface (12) and the room (2), the surface element being at least partially permeable to thermal radiation and being practically impermeable to air, so that a practically airtight intermediate space (16) is formed between the boundary surface (12) and the surface element (14), It is characterized in that A condensation chamber (13) is formed in an area adjacent to the medium inlet (7), adjacent to the medium pipeline (5) and on a side facing away from the heat exchanger wall (11) relative to the surface element (14), and the heat exchanger wall (11) has at least one opening (17) so that the middle space (16) is connected to the condensation chamber (13), and a capillary material (18) is arranged in the condensation chamber (13), and the capillary material is guided to the outer surface (19) of the heat exchanger panel (1), so that the liquid condensed in the condensation chamber (13) is transported to the outside due to the capillary action of the capillary material (18).

2. The heat exchanger panel (1) according to claim 1, It is characterized in that The heat exchanger panel (1) comprises a ceiling or wall panel (4) in which the medium line (5) is embedded and wherein the central space (16) is laterally surrounded by edge elements (15).

3. The heat exchanger panel (1) according to claim 2, It is characterized in that The ceiling or wall panel (4) and the edge element (15) are made of a substantially diffusion-proof material.

4. A heat exchanger panel (1) according to any one of claims 1 to 3, It is characterized in that The capillary material (18) is a nonwoven material or a textile material or an absorbent material, or is formed as a polymer.

5. A heat exchanger panel (1) according to any one of claims 1 to 4, It is characterized in that The medium pipeline (5) is at least a straight or meandering pipeline.

6. A heat exchanger panel (1) according to any one of claims 1 to 5, It is characterized in that The area forming the condensation chamber (13) adjacent to the medium inlet (7) comprises at least 10% or at least 20% or at least 30% of the length of the medium pipeline (5).

7. A heat exchanger panel (1) according to any one of claims 1 to 6, It is characterized in that A plurality of openings (17) are formed in the heat exchanger wall (11), the openings (17) having a minimum clear width of at least 0.2 mm or at least 0.3 mm or at least 0.4 mm and / or a maximum clear width of 1.5 mm or at most 1.4 mm or at most 1.3 mm.

8. A heat exchanger panel (1) according to any one of claims 1 to 7, It is characterized in that The surface element (14) exhibits a transmittance of greater than about 50% or greater than about 70% or greater than about 90% at least in a partial range at wavelengths between about 3 μm and about 30 μm or between about 6 μm and about 20 μm.

9. A heat exchanger panel (1) according to any one of claims 1 to 8, It is characterized in that A groove (26) is provided, which completely or almost completely surrounds the ceiling or wall panel (4) on the side facing the ceiling or wall panel, and / or the groove completely or almost completely surrounds the medium pipeline (5) and the condensation chamber (13) on the side facing the ceiling or wall panel.

10. The heat exchanger panel (1) according to claim 9, It is characterized in that The groove (26) is made of a diffusion-resistant material, preferably a metal, such as aluminum.

11. A heat exchanger panel (1) according to any one of claims 1 to 10, It is characterized in that A heat-insulating and / or sound-absorbing layer (20) and / or a layer which prevents diffusion of water vapor is arranged on the side of the heat exchanger panel (1) facing away from the room (2).

12. A heat exchanger panel (1) according to any one of claims 1 to 11, It is characterized in that Electronic components such as sensors, semiconductors, LEDs and / or other active or passive components or heat storage materials are arranged between the heat exchanger wall (11) and the surface element (14) and / or on the side of the surface element (14) facing the room (2).

13. A method for cooling a room (2) having a heat exchanger panel (1) according to claim 1, comprising the following steps: The cold heat exchange medium is conducted in the medium pipeline (5). condensing water in a condensation chamber (13) adjacent to the medium pipeline (5), The section of the capillary material (18) arranged in the condensation chamber (13) absorbs moisture, and The moisture is removed to the outer surface (19) of the heat exchanger panel (1) by means of the capillary action of the capillary material (18).

14. The method according to claim 13, characterized in that Use of a heat exchanger panel according to one of claims 1 to 12.

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