CN201731654U - Porous material solar energy air heat collection device - Google Patents

Porous material solar energy air heat collection device Download PDF

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Publication number
CN201731654U
CN201731654U CN2010202047334U CN201020204733U CN201731654U CN 201731654 U CN201731654 U CN 201731654U CN 2010202047334 U CN2010202047334 U CN 2010202047334U CN 201020204733 U CN201020204733 U CN 201020204733U CN 201731654 U CN201731654 U CN 201731654U
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CN
China
Prior art keywords
porous material
heat
solar energy
air
heat exchange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202047334U
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Chinese (zh)
Inventor
刁彦华
赵耀华
于雯静
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Beijing University of Technology
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Beijing University of Technology
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Filing date
Publication date
Application filed by Beijing University of Technology filed Critical Beijing University of Technology
Priority to CN2010202047334U priority Critical patent/CN201731654U/en
Application granted granted Critical
Publication of CN201731654U publication Critical patent/CN201731654U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/80Solar heat collectors using working fluids comprising porous material or permeable masses directly contacting the working fluids
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The utility model discloses a porous material solar energy air heat collection device comprising a transparent cover plate, a frame, a porous material heat absorption body, a heat absorption base plate arranged below the transparent cover plate, a porous material intensified heat exchange element, a back plate, an air inlet and an air outlet, wherein the upper surface of the heat absorption base plate is jointed with the surface of the porous material heat absorption body and the lower surface is jointed with the base plane of a porous material integrated intensified heat exchange element; an air passage for air circulation is reserved between the heat absorption base plate and the back plate; and the outside of the frame is jointed with a box body made from thermal insulation material. Under the drive of a fan, the air flows into a heat collector from the inlet of the heat collector, flows on the intensified heat exchange surface and conducts high-efficiency heat exchange with the intensified heat exchange surface to obtain hot air. Finally, the heated hot air flows out from the outlet of the heat collector. The heat collector device can obtain hot air by efficiently collecting solar energy, so as to meet the requirements for building heating, rural grains and economical crops drying.

Description

Porous material solar energy air heat-collecting device
Technical field
The utility model relates to solar energy heat utilization device, particularly is used to add the solar energy air heat collector device of hot-air.
Background technology
Solar energy need not exploitation and long-distance conveying as a kind of clean energy resource of sustainable use, and safety easy to use must become one of human main energy sources, and utilization is under construction in recent years shown great attention to.The energy that earth every year obtains from the sun is up to 6 * 1017KWh, and the 74000000000000 tons of energy that standard coal discharged that are equivalent to burn are several ten thousand times of the whole world year energy consumption at present.Solar energy air heat collector is the visual plant in the solar energy heat distribution system, and it is collected solar energy and makes it to be converted to heat energy, and the height of solar energy heat distribution system conversion efficiency depends primarily on the performance of heat collector.Air collector has following advantage: (1) system starts fast; (2) be working media directly with air, avoided the diabatic process between the multiple working media, system compact is succinct; (3) air collector can not cause corrosion; (4) there is not the freezing problem of working media; (5) the heat collector internal pressure can be not too high.The plate type solar air collector is a kind of important way of utilizing solar energy, can be widely used in fields such as agricultural product drying such as building heating, cereal and industrial crops.
What for example the described heat collector of patent ZL200710123792.1 was taked is in the both sides up and down of thermal-arrest core version the gas channel that is connected to be set; Folder is established first space between thermal-arrest core and the backboard, and folder is established second space between heat-collecting core board and the transparent cover plate, and the two ends of gas channel are communicated to air inlet and gas outlet respectively.This heat collector air duct complexity, the pressure loss is big.The described a kind of solar thermal collector that has the heat accumulation function of Chinese patent ZL200510040068.3, between this heat collector absorber plate and the insulation base plate metal can that heat storage phase-changing material is housed is set, insulation material in the metal can store unnecessary heat energy, when night, temperature was low, energy stored can discharge.This heat collector air duct complex structure, flow resistance is big.
The utility model content
The purpose of this utility model is to propose a kind of collecting efficiency height, simple in structure, is applicable to the novel porous material solar energy air heat-collecting device in fields such as building heating, agricultural product drying.
The utility model adopts following technical scheme:
Porous material solar energy air heat-collecting device, comprise transparent cover plate, framework, porous material absorber, place endothermic substrate, porous material one enhanced heat exchange element, backboard, air intlet and air outlet slit under the transparent cover plate, fit in the upper surface of endothermic substrate and porous material absorber surface, the basal plane of lower surface and porous material reinforced heat exchange element is fitted, leave air duct between endothermic substrate and backboard, the casing that the outside applying insulation material of framework is made for circulation of air.
Described transparent cover plate is the hollow sheeting that polycarbonate is made.
Described porous material absorber is the graphite porous material absorber that is coated with solar selectively absorbing coating.Described enhanced heat exchange element is integrated into by the graphite porous material.The enhanced heat exchange element is by basal plane and can constituting for difform fins such as rectangle, cylindricalitys of distributing on basal plane.Porous material absorber and enhanced heat exchange element are fitted by heat-conducting glue and endothermic substrate surface.
Described absorber plate substrate is a metal substrate.
Distance between described transparent cover plate and the porous material is less than 5mm.
The shape of described framework can be cuboid, also can be cylindric other shapes that waits.
Described porous material reinforced heat exchange surface is the porous material reinforced heat exchange surface of graphite.
The operation principle and the process of porous material solar energy air heat-collecting device of the present utility model are as follows: air enters air duct by solar energy air heat collector under the driving of blower fan, sunshine incides the porous material absorber surface that is coated with selective coating by well-illuminated glass cover-plate, porous material absorber surface obtains heat energy by the mode of radiant heat transfer, and mainly heat is reached in substrate by porous inside, the substrate mode by heat conduction again is passed to heat and reaches porous material reinforced heat exchange element surface, air flows on the enhanced heat exchange surface and is heated the back by air outlet slit outflow solar energy air heat collector, and the part heat loses by the outer surface of solar energy air heat collector.
Compare with existing heat collector, the utility model can obtain following beneficial effect:
The graphite porous material surface that is coated with solar selectively absorbing coating that the utility model adopts can reduce the heat loss through radiation loss as the thermal-arrest surface;
The ratio thermal conductivity factor that the utility model adopts the graphite porous material to have be metallic copper 4.8-7 doubly between, can rapidly heat collector gained heat be reached the enhanced heat exchange surface and carry out sufficient heat exchange with air;
Distance between transparent cover plate and the graphite porous material absorber is very little, has reduced the heat loss that causes owing to convection heat transfer' heat-transfer by convection;
The collecting efficiency height, simple in structure, processing and easy for installation.
Description of drawings
The outward appearance side view of Fig. 1 porous material solar energy air heat-collecting device;
The section of Fig. 2 porous material solar energy air heat-collecting device is formed structural representation;
The integrated enhanced heat exchange element of graphite porous material schematic diagram in Fig. 3 porous material solar energy air heat-collecting device;
The A of first kind of situation of the integrated enhanced heat exchange element of the graphite porous material in Fig. 4 porous material solar energy air heat-collecting device is to schematic diagram;
The A of second kind of situation of the integrated enhanced heat exchange element of the graphite porous material in Fig. 5 porous material solar energy air heat-collecting device is to schematic diagram;
Among the figure, the double-deck transparent cover plate of 1-, 2-porous material absorber, 3-endothermic substrate, the integrated enhanced heat exchange element of 4-porous material, 5-framework, 6-backboard, 7-insulation material, 8-air intlet, 9-air outlet slit.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, the top of air collector is the hollow transparent cover plate of being made by polycarbonate 1, and is fixed on the casing with adhesive tape.In heat collector, utilize adhesive tape to be fixed on the framework 5, air collector inside is divided into two parts, upper surface at substrate is arranged the porous material absorber 2 that is coated with solar selectively absorbing coating, can strengthen the radiant heat transfer process, suppress scattering and disappearing of heat, the distance of the upper surface of porous material absorber 2 and clear glass cover plate is very little, with the heat loss that suppresses to be caused by cross-ventilation.At the lower surface of endothermic substrate 3 with the integrated enhanced heat exchange element 4 of heat-conducting glue applying porous material, when air flows in passage, the rough surface on the integrated enhanced heat exchange of porous material surface can destroy the mobile boundary layer of air and increase heat exchange area, thereby strengthens the heat convection between absorber plate and the air.The bottom of the integrated enhanced heat exchange element 4 of porous material is a backboard 6, and backboard is fixed on the frame 5 by adhesive tape.The bottom of backboard 6 is a heat-insulation layer 7.The material that heat-insulation layer 7 is adopted is a polystyrene, and thickness is 50mm, and the mineral wool with 30mm around the framework 5 is incubated.Air intlet 8 can be connected with frame by bonding mode with air outlet slit 9 pipeline sections.Need to prove that transparent cover plate, endothermic substrate, backboard and frame junction adopt adhesive tape and fluid sealant dual mode to seal.
Be illustrated in figure 3 as the front view of the integrated enhanced heat exchange element 4 of porous material, be depicted as the fin that is shaped as cylindricality and rectangle on the enhanced heat exchange face as Fig. 4,5.
Adopt transparent cover plate to make in the utility model by the polycarbonate hollow sheeting.Polycarbonate clear hollow plate has excellent heat insulation property, can reduce the leakage heat of solar energy air heat collector effectively, also has in light weightly, installs very conveniently, and installation cost is low.

Claims (8)

1. solar energy air heat-collecting device, comprise transparent cover plate, framework, place endothermic substrate, backboard, air intlet and air outlet slit under the transparent cover plate, it is characterized in that: the upper surface of endothermic substrate and porous material absorber are fitted, lower surface and porous material reinforced heat exchange element are fitted, leave air duct between endothermic substrate and backboard, the casing that the outside applying insulation material of framework is made for circulation of air.
2. solar energy air heat-collecting device according to claim 1 is characterized in that: described transparent cover plate is the hollow sheeting that polycarbonate is made.
3. solar energy air heat-collecting device according to claim 1 is characterized in that: described porous material absorber is the graphite porous material absorber that is coated with solar selectively absorbing coating.
4. solar energy air heat-collecting device according to claim 1 is characterized in that: described porous material reinforced heat exchange element is integrated into by the graphite porous material.
5. solar energy air heat-collecting device according to claim 4 is characterized in that: described porous material reinforced heat exchange element is by basal plane and can constituting for difform fins such as rectangle, cylindricalitys of distributing on basal plane.
6. according to each described solar energy heat collection exchanger in the claim 1,3,4,5, it is characterized in that: described porous material absorber and porous material reinforced heat exchange element are fitted by heat-conducting glue and endothermic substrate surface.
7. solar energy air heat-collecting device according to claim 1 is characterized in that: described endothermic substrate is a metallic plate.
8. solar energy air heat-collecting device according to claim 1 is characterized in that: the shape of described framework can be cuboid, also can be cylindric other shapes that waits.
CN2010202047334U 2010-05-27 2010-05-27 Porous material solar energy air heat collection device Expired - Fee Related CN201731654U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202047334U CN201731654U (en) 2010-05-27 2010-05-27 Porous material solar energy air heat collection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202047334U CN201731654U (en) 2010-05-27 2010-05-27 Porous material solar energy air heat collection device

Publications (1)

Publication Number Publication Date
CN201731654U true CN201731654U (en) 2011-02-02

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846404A (en) * 2010-05-27 2010-09-29 北京工业大学 Porous material solar energy air heat-collecting device
CN102445008A (en) * 2011-12-08 2012-05-09 南京工业大学 Tower-type solar energy water/steam compound type plate fin hot plate type heat absorber
CN102692084A (en) * 2011-03-25 2012-09-26 南通京源水工自动化设备有限公司 Solar flat plate collector
CN107181453A (en) * 2017-06-03 2017-09-19 北京工业大学 A kind of Wind-cooling type photovoltaic and photothermal integral system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846404A (en) * 2010-05-27 2010-09-29 北京工业大学 Porous material solar energy air heat-collecting device
CN101846404B (en) * 2010-05-27 2012-05-30 北京工业大学 Porous material solar energy air heat-collecting device
CN102692084A (en) * 2011-03-25 2012-09-26 南通京源水工自动化设备有限公司 Solar flat plate collector
CN102445008A (en) * 2011-12-08 2012-05-09 南京工业大学 Tower-type solar energy water/steam compound type plate fin hot plate type heat absorber
CN107181453A (en) * 2017-06-03 2017-09-19 北京工业大学 A kind of Wind-cooling type photovoltaic and photothermal integral system

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110202

Termination date: 20130527