Classifications

• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
  • H10F77/00—Constructional details of devices covered by this subclass
  • H10F77/60—Arrangements for cooling, heating, ventilating or compensating for temperature fluctuations
  • H10F77/63—Arrangements for cooling directly associated or integrated with photovoltaic cells, e.g. heat sinks directly associated with the photovoltaic cells or integrated Peltier elements for active cooling
  • H10F77/68—Arrangements for cooling directly associated or integrated with photovoltaic cells, e.g. heat sinks directly associated with the photovoltaic cells or integrated Peltier elements for active cooling using gaseous or liquid coolants, e.g. air flow ventilation or water circulation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S10/00—Solar heat collectors using working fluids
  • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
  • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
  • F24S40/50—Preventing overheating or overpressure
  • F24S40/55—Arrangements for cooling, e.g. by using external heat dissipating means or internal cooling circuits
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F1/00—Tubular elements; Assemblies of tubular elements
  • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
  • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
  • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F1/00—Tubular elements; Assemblies of tubular elements
  • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
  • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
  • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
  • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S10/00—Solar heat collectors using working fluids
  • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
  • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
  • F24S2010/751—Special fins
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
  • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
  • F28D2021/0029—Heat sinks
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/40—Solar thermal energy, e.g. solar towers
  • Y02E10/44—Heat exchange systems
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/50—Photovoltaic [PV] energy

Definitions

• the present invention relates to a cooling device that can provide cooling including hot surfaces such as a photovoltaic panel but also any hot surface or ambient air.
• the invention also relates to such a device which makes it possible to recover the heat from the surfaces.
• a heat dissipating device comprising a plurality of parallel pipes in contact with the panel and coming to fit into blades, or fins, formed in the vicinity of ends of these pipes, on these pipes.
• the pipes recover the heat accumulated by the photovoltaic panel and transmit it to the fins by conduction, that is to say by contact between two entities so as to achieve a heat exchange between these two entities.
• the fins then evacuate the heat into the surrounding air by convection.
• a disadvantage of such a technique is that the cooling of the photovoltaic panel is not performed on the entire surface of the panel which is not optimal because certain areas of this panel, in this case those which are not in contact direct with the pipes, will be less cooled than the areas in direct contact with the pipes that are cooled by convection.
• the cooling rate of the panel is not optimal. Indeed, the cooling being mainly carried out by conduction, it is conditioned by the thermal conductivity of the pipes as well as the contact zone between these pipes and the surface to be cooled.
• a disadvantage of this technique is that the passage of heat from each cell to the neighboring blade will be conditioned by the contact between the blade and the cell which is not optimal because the quality of this contact is difficult to control (depending on the conditions of manufacture, manipulation, ). As a result, an imperfect contact and therefore a limited contact surface reduces the heat exchange, and therefore the cooling of the cell which is not satisfactory.
• the invention particularly aims to solve the disadvantages of the prior art.
• an objective of at least one embodiment of the invention is to provide a surface cooling device for optimizing the cooling of a given surface by acting on the entire surface to be cooled.
• Another objective of at least one embodiment is to provide a technique that optimizes convective and conductive energy transport.
• Yet another object of at least one embodiment is to provide a technique for optimizing the energy recovered by cooling.
• Another objective of at least one embodiment of the invention is to provide a device that is inexpensive and simple to implement.
• a device for cooling a surface to be cooled comprising:
• the device further comprises at least one cooling tube passing through the plurality of blades.
• the invention proposes a new and inventive approach for optimizing the cooling of an area by implementing a cooling surface in continuous contact with this zone and providing a cooling tube through blades, or fins, in contact with the cooling surface.
• the cooling and therefore the energy transfer is optimally effected by convection and conduction.
• the blades comprise a first portion and a second portion joined by an edge. Moreover, for two given successive blades, the second portion of the first blade is in contact with the second portion of the second blade, the second portions forming a portion of the cooling surface.
• the fact that the cooling surface is "confused" with the blades allows these blades to directly capture the heat and diffuse through their first part and through the cooling tube.
• the second portion of the first blade can at least partially cover the second portion of the second blade.
• the cooling tube passes through the blades at the level of first parts.
• the second part of each of the blades forms an angle of between 85 ° and 95 ° with the first part, and may even be substantially equal to 90 °.
• the edge has a rounded profile.
• this facilitates the stamping of such a part, especially during a folding step of a flat piece to obtain a blade as implemented in the invention.
• the blades have a substantially constant thickness and between 0.1 and 0.3 mm.
• the blades are spaced a substantially constant distance and between 1 mm and 6 mm.
• the cooling device cooperates with heat recovery means placed in contact with the tube.
• the invention also relates to a thermal panel comprising a thermal plate and further comprising a cooling device according to one of the embodiments of the invention.
• Figure 1 is a perspective view of a cooling device according to one embodiment of the invention.
• FIGS. 2 to 4 are close-up views of part of a cooling device according to the embodiment of FIG. 1;
• FIG. 5 is an exploded perspective view of a cooling device according to another embodiment.
• the cooling device 1, or cooling module comprises a plurality of blades 4 (otherwise called lamellae or fins) formed of a first part 41 and a second part 42, these parts being joined by an edge 43.
• the blades 4 have a profile substantially in "L", the first 41 and second 42 parts forming respectively the long side and the short side of the L and the second part 42 forming an angle substantially equal to 90 ° with the first part 41.
• the angle ⁇ between the first portion 41 and the second portion 42 would more generally be between 85 ° and 95 °. It is even possible to provide angles greater than 95 ° or less than 85 ° so as to adapt to the uses of the cooling device 1. It is also possible to provide variants in which the first part corresponds to the short side of the L while the second part part would correspond to the big side of L.
• the edge 43 has a rounded profile so as to facilitate the stamping. Indeed, so as to give the blades their L profile, they are folded. Thus, a rounded shape of the edge is obtained simply during folding. Such a profile on the finished blade thus limits the manufacturing steps and therefore the costs.
• the edge has a different profile.
• Embodiments may also be provided in which the two parts are welded together.
• the blades have a substantially constant thickness E and between 0.1 and 0.3 millimeters.
• E thickness
• fins having a different thickness in other embodiments.
• These blades 4 can be made of aluminum such as hydrophilic aluminum or aluminum pre painted. They may also be made of copper or a copper alloy such as tinned copper.
• the blades 4 are connected to a cooling surface 3 in continuous contact with an area to be cooled 2.
• the cooling surface 3 is formed by all the second parts 42 4. This thus makes it possible to optimize the cooling by implementing a continuous surface, and this can also improve the speed of "evacuation" of the heat towards the fins by limiting the number of thicknesses to be traversed by the heat. . Indeed, the fact that the cooling surface 3 is "merged" with the blades 4 allows these blades 4 to directly capture the heat of the zone to be cooled 2 and to diffuse through their first portions 41.
• blades 4 are placed such that for two successive blades 4 ', 4''data, the second portion 42' of the first blade 4 'partially covers the second portion 42''of the second blade 4''. In this way, it avoids two blades, and in particular two second successive parts, are spaced apart from each other. Thus, the contact is provided between the blades which allows an optimal cooling of the zone to be cooled 2.
• the thickness of the blades which is relatively low, provides a cooling surface (composed of the second parts 42 of the blades 4 ) substantially flat.
• the fact of having a relatively small blade thickness makes the superposition of two blades will not generate a "rim" too large, this flange being formed by a first blade located below a second adjacent blade which is superimposed on this first.
• the different blades are spaced two by two by a distance D substantially constant and between 1mm and 6mm, this distance may of course be different from this range of values and may be non-constant in variants of one invention .
• cooling surface 3 would be distinct from the blades 4 and would not be formed by the second parts 42 of the blades 4, but would be in contact with the blades 4. It can furthermore be conceived of embodiments in which the blades would not be formed of two parts but a single portion 41, for example welded to the cooling surface 3 at one of its ends, and forming an angle between 0 ° and 180 ° with the surface cooling 3.
• the cooling device 1 further comprises a cooling tube 5 which passes through the plurality of blades 4, at the first portions 41 of these blades 4.
• This tube may consist of a material such as copper (which may be for example smooth or grooved) or aluminum.
• the tube 5, otherwise called tube circuit or cooling pipe has a diameter of between 6 and 18 mm for example. he can be, according to the variants, formed of several sections of pipes or be a single pipe having a "serpentine" profile, conventionally used in systems such as radiators.
• This tube 5 passes through each blade, at the first portions 41, so as to create a cooling circuit near the cooling surface 3, which will capture the heat accumulated by the fins.
• a coolant that is to say a fluid capable of transporting the heat accumulated during cooling of the zone to be cooled 2.
• This heat transfer fluid is for example water in liquid form or in the vapor state, a liquid such as freon, or a gas such as air.
• This tube 5 can be placed in contact with heat recovery means (not shown) which cooperate with the cooling device 1 so that the heat accumulated (from the heat recovered at the zone to be cooled 2) in the device 1 is recovered in these means and can be used for example as a means for producing heating or production of domestic hot water via a storage exchanger device for example.
• heat recovery means not shown
• the device would have several tube circuits, otherwise called layers, arranged so that they pass through the first blade at different levels, that is to say without crossing.
• the different layers would have a different mode. different operating, namely a sheet inside which circulates air and another sheet inside which circulates water.
• the combinations of layers are not limited to this last example.
• FIG. 5 Another embodiment is presented in connection with FIG. 5, in which the cooling device is implemented within a solar thermal panel.
• the solar thermal panel 7 comprises a thermal plate 71.
• the thermal panel 7 comprises a cooling device 1 placed in contact with the plate 71.
• the cooling device similar in this example to the cooling device of FIGS. 1 to 4, comprises a single ply 5 as well as a plurality of blades 4 whose second parts form a cooling surface in continuous contact with the plate 71 and the first parts allow a flow of ambient air near the blades and the cooling surface, so as to recover the heat accumulated by the plate 71 by conduction and by convection.
• this thermal panel can cooperate with heat recovery means arranged in contact with the tube 5 so that the recovered energy can be used, for example, means for heating ambient air or water.
• the cooling device is included in systems such as a photovoltaic solar panel comprising a plate provided with photovoltaic cells.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Engineering & Computer Science (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Geometry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Combustion & Propulsion (AREA)
• Dispersion Chemistry (AREA)
• Cooling Or The Like Of Electrical Apparatus (AREA)
• Furnace Details (AREA)
• Tunnel Furnaces (AREA)

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Publications (1)

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• 2012
  • 2012-11-15 FR FR1260888A patent/FR2998095B1/fr not_active Expired - Fee Related
• 2013
  • 2013-11-12 WO PCT/FR2013/052711 patent/WO2014076405A2/fr not_active Ceased
  • 2013-11-12 EP EP13801651.4A patent/EP2920524A2/de not_active Withdrawn

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Non-Patent Citations (1)

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