CN108592421B - Heat pipe type flat plate collector - Google Patents
Heat pipe type flat plate collector Download PDFInfo
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- CN108592421B CN108592421B CN201810607986.7A CN201810607986A CN108592421B CN 108592421 B CN108592421 B CN 108592421B CN 201810607986 A CN201810607986 A CN 201810607986A CN 108592421 B CN108592421 B CN 108592421B
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- Prior art keywords
- pipe
- heat
- tube
- heat transfer
- return
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 238000005219 brazing Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat pipe type flat plate collector, which comprises an outer frame, a heat absorbing plate core and light-transmitting glass, wherein the heat absorbing plate core is arranged in the outer frame; the heat absorption plate core is an integral heat pipe type heat absorption plate core and consists of a cold fluid channel pipe, a heat transfer pipe, a heat absorption film, a collecting pipe and a return pipe; the cold fluid channel pipe comprises an inner pipe, an outer pipe and a blocking plate, and the blocking plate is welded between the inner pipe and the outer pipe; the heat transfer pipe, the heat absorption film, the collecting pipe, the return pipe and the outer pipe are made of aluminum materials, the heat transfer pipe and the return pipe are welded between the outer pipe and the collecting pipe in parallel to form a pipeline assembly, and the heat absorption film is welded on the pipeline assembly; the cooling medium is transported from the lower end to the upper end of the inner pipe, and the phase change medium is filled in the pipeline assembly. The technical scheme provided by the invention has reasonable structure, solves the problems of large flow resistance and uneven flow distribution of the flat plate heat collection system, improves the efficiency factor of the heat collector, and improves the effective utilization rate of energy.
Description
Technical Field
The invention relates to a tubular heat collector, in particular to a heat pipe type flat plate heat collector.
Background
Flat-type collectors are widely used because of their high heat collection efficiency and efficient use of energy. However, the flat plate collector adopts the copper pipe as the heat absorbing material, has large weight and high manufacturing cost, and is difficult to be widely applied.
The core component in the flat plate heat collector consists of a black heat absorbing plate, a copper pipe is used as a fluid channel, and the method of laser welding, diffusion welding and the like is adopted. The laser welding method between the heat absorbing plate and the fluid channel pipe has deviation from theoretical assumption to a great extent, and air gaps exist between welding seams, so that contact thermal resistance formed by point contact in the structure is increased, and the efficiency factor of the heat collector is reduced.
Parallel branch pipes formed by fluid channels in the form of copper pipes transfer the energy obtained from the heat absorbing surface to the branch pipe cold fluid medium. Because the fluid channels are provided with converging, converging and multipath branch pipes, the fluid medium enters the fluid channels from the main inlet pipe, and the phenomenon of uneven flow distribution is inevitably generated, and the phenomenon is greatly deviated from the theoretical assumption that the flow is evenly distributed in the branch pipes, so that the efficiency factor of the heat collector is again deteriorated.
The cold fluid medium flows in the multi-way branch pipe, and has the following resistance, and the local resistance formed by converging and converging, so that the total flow resistance is larger, and the lift of the pump system and the shaft power of the pump are directly influenced.
The aluminum-based heat absorbing plate is a single plate and is connected to the copper heat transfer tube by laser welding, and an air gap exists, so that contact thermal resistance formed by point contact in the structure is increased, the heat transfer effect is affected, and the efficiency factor of the heat collector is low.
Therefore, there is a need to design a heat pipe type flat plate collector to solve the problems in the prior art.
Disclosure of Invention
The invention aims at solving the technical problems, and the heat pipe type flat plate collector provided by the invention has reasonable structure, utilizes the phase change heat transfer principle of evaporation and condensation to transfer heat to a cooling medium in a mode of nearly zero thermal resistance, solves the problems of large flow resistance and uneven flow distribution of a flat plate collector system, improves the efficiency factor of the collector, and improves the effective utilization rate of energy.
In order to solve the technical problems, the invention provides a heat pipe type flat plate collector, which specifically comprises an outer frame, a heat absorbing plate core and light-transmitting glass, wherein the heat absorbing plate core is arranged in the outer frame, and the light-transmitting glass is arranged on the upper part of the outer frame; the heat absorption plate core is an integral heat pipe type heat absorption plate core and consists of a cold fluid channel pipe, a heat transfer pipe, a heat absorption film, a collecting pipe and a return pipe; the cold fluid channel pipe comprises an inner pipe, an outer pipe and a blocking plate, and the blocking plate is welded between the inner pipe and the outer pipe; the heat transfer pipe, the heat absorption film, the collecting pipe, the return pipe and the outer pipe are made of aluminum materials, the heat transfer pipe and the return pipe are welded between the outer pipe and the collecting pipe in parallel to form a pipeline assembly, and the heat absorption film is welded on the pipeline assembly; the cooling medium is transported from the lower end to the upper end of the inner pipe, and the phase change medium is filled in the pipeline assembly.
In some embodiments, the heat absorbing film is a monolithic blue titanium film aluminum plate welded to one side of the heat transfer tube and return tube.
In some embodiments, the inner tube is a copper tube and the heat transfer tube, the manifold, the return tube, and the outer tube are aluminum tubes.
In some embodiments, the cold fluid channel tube and the header tube are disposed parallel to each other, and the heat transfer tube and the return tube are welded perpendicularly to the fluid channel tube.
The heat absorption film is welded on the pipeline component through aluminum, and the heat transfer pipe and the return pipe are welded between the outer pipe (1-2) and the collecting pipe through aluminum.
The aluminum welding specifically comprises the following steps: and (3) operating in a vacuum brazing furnace to ensure that the vacuum degree is in the order of 10Pa, pre-coating solder between the branch pipe and the heat absorption film, heating to about 300 ℃, melting the solder, filling gaps among the heat transfer pipe, the collecting pipe, the return pipe, the outer pipe and the heat absorption film, and finally cooling in a state with protective gas to finish welding among the heat transfer pipe, the collecting pipe, the return pipe, the outer pipe and the heat absorption film.
The invention has the beneficial effects that:
the heat pipe type flat plate collector provided by the invention has a reasonable structure, utilizes the phase change heat transfer principle of evaporation and condensation to transfer heat to a cooling medium in a mode of 'near zero thermal resistance', solves the problems of large flow resistance and uneven flow distribution of a flat plate heat collection system, improves the efficiency factor of the heat collector, and improves the effective utilization rate of energy. The method has the specific advantages that:
(1) An aluminum pipe is selected as a heat transfer pipe, so that the weight is light, and the price is low;
(2) The aluminum heat transfer tube and the blue titanium film aluminum plate heat absorption film are welded together in a unique aluminum welding mode, so that the heat conduction capacity is enhanced, the defects of large contact thermal resistance and low heat transfer effect formed by point contact of the traditional structure are overcome, the thermal resistance can be effectively reduced, and the heat conversion efficiency is improved; the binding force is firm; the length of the branch pipe is effectively utilized, and the effective heat absorption area is greatly improved;
(3) The heat absorption film is an integral blue titanium film aluminum plate, is integrally welded above the heat transfer pipes and the return pipes, covers all the heat transfer pipes and the return pipes, effectively avoids optical loss and heat loss in a single-piece spliced heat absorption plate structure on a single heat transfer pipe, and improves the energy utilization rate;
(4) The heat transfer tube, the collecting tube, the return tube and the outer tube are aluminum tubes, and the heat transfer tube and the return tube are vertically welded with the cold fluid channel tube;
(5) The cold fluid channel pipe adopts a copper-aluminum composite pipe (the inner pipe material is copper, the outer pipe material is aluminum) as a heat transfer pipe of a cooling medium and a phase change medium, the cooling medium is transmitted through the inner pipe, and the phase change medium is filled in a pipeline assembly formed by the heat transfer pipe and a return pipe which are welded in parallel between the outer pipe and a collecting pipe; the design scheme can ensure that the cooling medium flows in the channel of the copper structure, and ensure that the conventional cooling medium (such as water) does not react with the aluminum medium electrochemically to generate corrosion; meanwhile, the wall surface in contact with the phase change medium is made of aluminum, so that welding forming is conveniently carried out between the wall surface and other aluminum pipes, the tightness of the system is effectively ensured, and heat loss is prevented.
Drawings
The above-described advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the invention, wherein:
FIG. 1 is a schematic view of a heat pipe type flat plate collector according to the present invention;
FIG. 2 is a partial schematic view of a cold fluid channel tube of the present invention.
1. Cold fluid channel pipe 1-1, inner pipe 1-2, outer pipe 1-3, blocking plate; 2. a heat transfer tube; 3. a heat absorbing film, a collecting pipe; 5. and (5) a return pipe.
Detailed Description
Fig. 1 to 2 are views illustrating a heat pipe type flat plate collector according to the present invention, and detailed descriptions thereof will be given below with reference to specific embodiments and drawings.
The examples described herein are specific embodiments of the present invention, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the invention to the embodiments and scope of the invention. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification of the present application, including those adopting any obvious substitutions and modifications to the embodiments described herein.
The drawings in the present specification are schematic views, which assist in explaining the concept of the present invention, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structure of each component of the embodiment of the present invention, the same reference numerals are used for the same parts.
The utility model provides a dull and stereotyped collector of heat pipe type specifically includes outside framework, absorber plate core and printing opacity glass, and absorber plate core sets up the inside at outside framework, and printing opacity glass sets up the upper portion at outside framework. The heat absorption plate core is an integral heat pipe type heat absorption plate core, and consists of a cold fluid channel pipe 1, a heat transfer pipe 2, a heat absorption film 3, a collecting pipe 4 and a return pipe 5, as shown in fig. 1; the cold fluid channel pipe 1 comprises an inner pipe 1-1, an outer pipe 1-2 and a blocking plate 1-3, wherein the blocking plate 1-3 is welded between the inner pipe 1-1 and the outer pipe 1-2, as shown in FIG. 2; the heat transfer tube 2, the heat absorption film 3, the collecting tube 4, the return tube 5 and the outer tube 1-2 are made of aluminum materials, the heat transfer tube 2 and the return tube 5 are welded in parallel between the outer tube 1-2 and the collecting tube 4 to form a pipeline assembly, and the heat absorption film 3 is welded on the pipeline assembly; the cooling medium is transferred to the upper end through the lower end of the inner tube 1-1, and the phase change medium is filled in the pipe assembly.
The inventors have found that conventional flat panel collectors typically employ an activated welder to form aluminum sheets onto a plurality of manifolds by spot welding, in the presence of: a) The binding force is not firm; b) The contact thermal resistance exists, and the heat absorption effect is affected; c) The effective length of the branch pipe is affected and cannot be fully utilized, for example, for a flat plate collector with the length of 2m multiplied by 1m, a tool with the length of 0.15 meter is required to be reserved at two ends respectively by adopting laser welding, so that the effective length of the original 2 meters is changed into 1.7 meters, and the geometric effective heat absorption area is reduced from 100% to 85%.
In this application, heat transfer pipe 2, heat absorption membrane 3, collection pipe 4, back flow 5 and outer tube 1-2 are the aluminum product, and heat absorption membrane 3 adopts blue titanium membrane aluminum plate, adopts the aluminium welding method, guarantees the heat conduction between heat transfer pipe 2 and the heat absorption membrane 3, and the aluminium welding method specifically does: operating in a vacuum brazing furnace to ensure that the vacuum degree is in the order of 10Pa, pre-coating solder between a branch pipe and a heat absorption film 3, heating to about 300 ℃, melting the solder, filling gaps among a heat transfer pipe 2, a collecting pipe 4, a return pipe 5, an outer pipe 1-2 and the heat absorption film 3, and finally cooling in a state with protective gas to finish welding between an aluminum pipe and a blue titanium film aluminum plate; the aluminum pipe and the blue titanium film aluminum plate are welded together, the bonding force is firm, the heat conduction capacity is enhanced, the defect that the contact thermal resistance formed by point contact of the traditional structure is large and the heat conduction effect is low is overcome, so that the thermal resistance can be effectively reduced, and the heat conversion efficiency is improved. Simultaneously, heat transfer pipe 2, collection pipe 4, back flow 5 and outer tube 1-2 are the aluminum pipe, heat transfer pipe 2 and back flow 5 and cold fluid channel pipe 1 vertical welding, this application adopts full aluminium welding, effectively guarantees the leakproofness of system, prevents heat loss. And the length of the branch pipe is effectively utilized, and the effective heat absorption area is improved by at least 15 percent.
In the embodiment shown in fig. 1, the heat absorbing film 3 is an integral blue titanium film aluminum plate, and is integrally welded above the heat transfer tube 2 and the return tube 5, so as to cover all the heat transfer tube 2 and the return tube 5. In this application, heat absorption membrane 3 is overall structure, has effectively avoided optical loss and heat loss in the monolithic concatenation formula heat absorption plate structure, has improved the utilization ratio of energy.
The inner tube 1-1 is a copper tube, and the heat transfer tube 2, the collecting tube 4, the return tube 5 and the outer tube 1-2 are aluminum tubes. In the application, the cold fluid channel pipe adopts a copper-aluminum composite pipe as a heat transfer pipe of a cooling medium and a phase change medium, the cooling medium is transmitted through an inner pipe 1-1, and the phase change medium is filled in a pipeline assembly formed by parallel welding of the heat transfer pipe 2 and a return pipe 5 between the outer pipe 1-2 and a collecting pipe 4; the design scheme can ensure that the cooling medium flows in the channel of the copper structure, and ensure that the conventional cooling medium (such as water) does not react with the aluminum medium electrochemically to generate corrosion; meanwhile, the wall surface in contact with the phase change medium is made of aluminum, so that welding forming is conveniently carried out between the wall surface and other aluminum pipes, the tightness of the system is effectively ensured, and heat loss is prevented.
In some embodiments, the cold fluid channel pipe 1 and the collecting pipe 4 are arranged in parallel, and the heat transfer pipe 2 and the return pipe 5 are welded perpendicularly to the cold fluid channel pipe 1. The phase change medium is filled in the pipeline assembly and circularly reciprocates in the pipeline assembly, heat is transferred to the cooling medium in a near zero thermal resistance mode by utilizing the phase change heat transfer principle of evaporation and condensation, the problems of high flow resistance and uneven flow distribution of a flat plate heat collection system are solved, the efficiency factor of the heat collector is improved, and the effective utilization rate of energy is improved.
Compared with the prior art, the heat pipe type flat plate collector provided by the invention has a reasonable structure, utilizes the phase change heat transfer principle of evaporation and condensation to transfer heat to a cooling medium in a mode of 'near zero thermal resistance', solves the problems of large flow resistance and uneven flow distribution of a flat plate collector system, improves the efficiency factor of the collector, and improves the effective utilization rate of energy.
The present invention is not limited to the above embodiments, and any person can obtain other products in various forms under the teaching of the present invention, however, any changes in shape or structure of the products are included in the scope of protection of the present invention, and all the products having the same or similar technical solutions as the present application are included in the present invention.
Claims (1)
1. A heat pipe type flat plate collector comprises an outer frame, a heat absorbing plate core and light-transmitting glass, wherein the heat absorbing plate core is arranged in the outer frame, and the light-transmitting glass is arranged on the upper part of the outer frame; the heat absorption plate core is an integral heat pipe type heat absorption plate core and consists of a cold fluid channel pipe (1), a heat transfer pipe (2), a heat absorption film (3), a collecting pipe (4) and a return pipe (5); the cold fluid channel pipe (1) comprises an inner pipe (1-1), an outer pipe (1-2) and a blocking plate (1-3), wherein the blocking plate (1-3) is welded between the inner pipe (1-1) and the outer pipe (1-2); the heat transfer tube (2), the heat absorption film (3), the collecting tube (4), the return tube (5) and the outer tube (1-2) are made of aluminum materials, the heat transfer tube (2) and the return tube (5) are welded in parallel between the outer tube (1-2) and the collecting tube (4) to form a pipeline assembly, the outer tube (1-2) is communicated with the collecting tube (4) through the heat transfer tube (2) and the return tube (5), and the heat absorption film (3) is welded on the pipeline assembly; the cooling medium is transmitted through the inner pipe (1-1), and the phase change medium is filled in the pipeline component;
the heat absorption film (3) is welded on the pipeline component through aluminum, and the heat transfer pipe (2) and the return pipe (5) are welded between the outer pipe (1-2) and the collecting pipe (4) through aluminum;
the heat absorption film (3) is an integral blue titanium film aluminum plate, is integrally welded above the heat transfer pipe (2) and the return pipe (5), and covers all the heat transfer pipe (2) and the return pipe (5);
the inner tube (1-1) is a copper tube, and the heat transfer tube (2), the collecting tube (4), the return tube (5) and the outer tube (1-2) are aluminum tubes;
the cold fluid channel pipe (1) and the collecting pipe (4) are arranged in parallel, and the heat transfer pipe (2) and the return pipe (5) are vertically welded with the cold fluid channel pipe (1); the aluminum welding specifically comprises the following steps: and (3) operating in a vacuum brazing furnace to ensure that the vacuum degree is in the order of 10Pa, pre-coating solder between the pipeline assembly and the heat absorption film (3), heating to 300 ℃ to melt the solder, filling gaps among the heat transfer pipe (2), the collecting pipe (4), the return pipe (5), the outer pipe (1-2) and the heat absorption film (3), and finally cooling in a state with protective gas to finish welding among the heat transfer pipe (2), the collecting pipe (4), the return pipe (5), the outer pipe (1-2) and the heat absorption film (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810607986.7A CN108592421B (en) | 2018-06-13 | 2018-06-13 | Heat pipe type flat plate collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810607986.7A CN108592421B (en) | 2018-06-13 | 2018-06-13 | Heat pipe type flat plate collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108592421A CN108592421A (en) | 2018-09-28 |
| CN108592421B true CN108592421B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810607986.7A Active CN108592421B (en) | 2018-06-13 | 2018-06-13 | Heat pipe type flat plate collector |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721214A (en) * | 2012-07-03 | 2012-10-10 | 湖北长耀明太阳能股份有限公司 | Flow passage structure for flat-plate solar collector cores and machining method thereof |
| CN102878697A (en) * | 2012-10-29 | 2013-01-16 | 安徽海太科新能源科技有限公司 | Flat plate collector with heat pipes |
| CN205843451U (en) * | 2016-04-06 | 2016-12-28 | 中国科学院工程热物理研究所 | A kind of antigravity heat pipe |
| CN208332714U (en) * | 2018-06-13 | 2019-01-04 | 中国科学院工程热物理研究所 | A kind of heat pipe type flat plate solar collector |
-
2018
- 2018-06-13 CN CN201810607986.7A patent/CN108592421B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721214A (en) * | 2012-07-03 | 2012-10-10 | 湖北长耀明太阳能股份有限公司 | Flow passage structure for flat-plate solar collector cores and machining method thereof |
| CN102878697A (en) * | 2012-10-29 | 2013-01-16 | 安徽海太科新能源科技有限公司 | Flat plate collector with heat pipes |
| CN205843451U (en) * | 2016-04-06 | 2016-12-28 | 中国科学院工程热物理研究所 | A kind of antigravity heat pipe |
| CN208332714U (en) * | 2018-06-13 | 2019-01-04 | 中国科学院工程热物理研究所 | A kind of heat pipe type flat plate solar collector |
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| Publication number | Publication date |
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| CN108592421A (en) | 2018-09-28 |
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