CN107316914A - It is a kind of to realize the system that Condensation photovoltaic battery is cooled down by carrying out radiation heat transfer with space - Google Patents

It is a kind of to realize the system that Condensation photovoltaic battery is cooled down by carrying out radiation heat transfer with space Download PDF

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Publication number
CN107316914A
CN107316914A CN201710717860.0A CN201710717860A CN107316914A CN 107316914 A CN107316914 A CN 107316914A CN 201710717860 A CN201710717860 A CN 201710717860A CN 107316914 A CN107316914 A CN 107316914A
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photovoltaic battery
condensation photovoltaic
matrix
transmitting film
particle
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CN107316914B (en
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王富强
王皓
程子明
梁华旭
谭建宇
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Harbin Institute of Technology Weihai
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Harbin Institute of Technology Weihai
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/052Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20Optical components
    • H02S40/22Light-reflecting or light-concentrating means
    • 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
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/52PV systems with concentrators

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

It is a kind of to realize the system that Condensation photovoltaic battery is cooled down by carrying out radiation heat transfer with space, belong to solar concentrating photovoltaic battery technical field of heat dissipation.Technical essential:Including compound parabolic concentrator, compound parabolic concentrator bottom has under shed, lower opening is provided with selective absorbing through transmitting film, selective absorbing is affixed on Condensation photovoltaic battery plate through transmitting film, and selective absorbing is made up of through transmitting film matrix and the nano-particle being placed in matrix.Selective absorbing is covered in above Condensation photovoltaic battery plate through transmitting film, the Condensation photovoltaic battery spectral response wave band 380nm 1200nm spectral radiance selective absorbing as much as possible that penetrates is allowed through transmitting film, the part energy that electric energy can not be converted in solar energy by allowing simultaneously is converted into 8 13 μm of infrared emanation energy as much as possible, and the purpose that radiation heat transfer realizes Condensation photovoltaic battery cooling is carried out with space so as to reach.

Description

It is a kind of to realize the system that Condensation photovoltaic battery is cooled down by carrying out radiation heat transfer with space
Technical field
The present invention relates to a kind of system of Condensation photovoltaic battery cooling, and in particular to a kind of to be changed by carrying out radiation with space The system that heat realizes Condensation photovoltaic battery cooling, belongs to solar concentrating photovoltaic battery technical field of heat dissipation.
Background technology
Solar energy solves to develop fossil energy with the unlimitedness of its reserves, the spatter property developed as 21 century One of effective way of the problems such as energy shortage, environmental pollution and greenhouse effects that source is brought.The utilization of solar energy resources according to Energy transform mode can be divided into opto-electronic conversion utilization, photothermal deformation and utilize and Photochemical convertion utilization, wherein photovoltaic Generating not only has the advantages that cleaning, safe and convenient, and due to China's solar energy resources very abundant, suitable solar energy is sent out The reason such as area is big of electricity, the Chinese government supports to develop photovoltaic generation industry energetically.Silicon solar cell is most general at present All over the photovoltaic cell that uses, the advantage such as it has technical maturity, stability good.But it is due to silicon solar cell opto-electronic conversion effect The shortcomings of rate is low, cost is high, it is necessary to which sunshine is converged to the high-performance Condensation photovoltaic battery of area very little by focusing technology On, solar radiation energy-flux density is improved to improve photoelectric transformation efficiency and then reduce cost.And that of electric energy can not be converted to Portion of energy is lodged in converter in the form of being vibrated with photon, that is, so-called heat energy.Can by the second law of thermodynamics It is relevant with the temperature of converter to know energy conversion efficiency, i.e., the open-circuit voltage of solar cell can drop as battery temperature is raised It is low.The heat dissipation problem of Condensation photovoltaic battery is to influence the key factor of photovoltaic cell performance and system reliability, therefore in design During concentration photovoltaic system, it is necessary to consider battery heat dissipation problem.
Traditional Condensation photovoltaic battery cooling mode has:Air-cooled, water cooling, microchannel cooling, heat pipe cooling etc..It is air-cooled Technology is to increase fin in panel backside, although technique is simple, but radiating effect is limited;Biography of the heat transfer property of water than wind Hot cold good, natural water cooling radiating effect is also better than air-cooled, but additionally to consider seepage and maintenance safety between working medium The problems such as;Microchannel cooling is widely used in terms of electronic product cooling, but its complex process and extra blower fan power consumption is big; Although heat pipe heat exchange property is good, working medium must match with heat pipe tubing, and heat pipe cooling cost height also causes it not It is adapted to large-scale application in concentrating photovoltaic power generation industry.Therefore, a kind of low cost is found and cold with good heat exchange property But method is very important.
The content of the invention
The brief overview on the present invention is given below, to provide on the basic of certain aspects of the invention Understand.It should be appreciated that this general introduction is not the exhaustive general introduction on the present invention.It is not intended to determine the pass of the present invention Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides some concepts in simplified form, In this, as the preamble in greater detail discussed later.
In consideration of it, the present invention provide it is a kind of by with space carry out radiation heat transfer realize Condensation photovoltaic battery cool down be System, to solve above-mentioned technical problem, reaches the purpose of reduction Condensation photovoltaic battery surface temperature.
The invention provides a kind of system by realizing Condensation photovoltaic battery cooling with space progress radiation heat transfer, including Compound parabolic concentrator, the compound parabolic concentrator bottom has under shed, and the lower opening is installed selective Absorption-transmission-transmitting film, the selective absorbing-transmission-transmitting film is affixed on Condensation photovoltaic battery plate, the selection Property absorption-transmission-transmitting film be made up of matrix and the nano-particle that is placed in matrix.
Further:Described matrix be polymethylpentene matrix, polyvinyl fluoride matrix or acrylic resin matrix, it is described to receive Rice corpuscles is TiO2Or SiO2
Further:Described matrix is polymethylpentene matrix, and its thickness is 50 μm;Nano-particle is TiO2Particle.Number Value analysis result shows that selective absorbing-transmission-transmitting film of the invention has high emissivity and in spectrum in 8-13 mu m wavebands Response wave band 380nm-1200nm has low absorptivity, and reduction condensation photovoltaic electricity is realized so as to reach and carry out radiation heat transfer with space The purpose of pond temperature.
Further:The particle radii of the nano-particle be 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1.0 μm, 2.0 μm, 3.0 μm or 4.0 μm.
Further:Volume fraction of the nano-particle in selective absorbing-transmission-transmitting film be 4%, 5%, 6%th, 7%, 8%, 9%, 10%.Selective absorbing-transmission-transmitting film is set to the greatest extent may be used in the absorptivity of 380nm-1200nm wave bands Can be small, make the emissivity between 8-13 mu m wavebands as big as possible, so as to improve the heat exchange efficiency exchanged heat with irradiation space and to poly- The cooling effect of light photovoltaic cell.
Beneficial effect:
The temperature in exoatmosphere cosmic space, close to absolute zero, is preferable low-temperature receiver, but atmosphere hinders ground Space-ward heat loss through radiation.However, between atmospheric window (8-13 μm) wave band, the absorptivity of atmosphere is very low, and transmitance is very big, And this wave band is exactly in the far-infrared band of ground object normal temperature radiation, the energy on ground can be radiated outer layer by this wave band Space.The present invention sticks selective absorbing-transmission-transmitting film on Condensation photovoltaic battery surface, it is had in 8-13 mu m wavebands High emissivity and there is low absorptivity in spectral response wave band 380nm-1200nm.In this way, film on the one hand can be reduced in spectrum Response wave band 380nm-1200nm absorptivity, so as to reduce film to Condensation photovoltaic battery absorption spectrum response wave band energy Influence, prior another aspect is that the heat of Condensation photovoltaic battery can be allowed to be converted into 8-13 μm of radiation energy as much as possible Amount, is lost in space through atmospheric window, reaches the purpose of reduction Condensation photovoltaic battery temperature.
Brief description of the drawings
Fig. 1:Concentration photovoltaic system battery cooling system schematic diagram (arrow represents optically focused opticpath in figure);
Fig. 2:Partial enlarged drawing at A in Fig. 1;
Fig. 3:The spectral absorption of film is with particle volume fraction (fv) change curve;
Fig. 4:The spectral absorption of film with particle diameter (D) change curve.
Embodiment
The one exemplary embodiment of the present invention is described hereinafter in connection with accompanying drawing.For clarity and conciseness, All features of actual embodiment are not described in the description.It should be understood, however, that developing any this actual implementation Many decisions specific to embodiment must be made during example, to realize the objectives of developer, for example, symbol Those restrictive conditions related to system and business are closed, and these restrictive conditions may have with the difference of embodiment Changed.In addition, it also should be appreciated that, although development is likely to be extremely complex and time-consuming, but to having benefited from the present invention For those skilled in the art of disclosure, this development is only routine task.
Herein, in addition it is also necessary to which explanation is a bit, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings It illustrate only and according to the closely related apparatus structure of the solution of the present invention and/or process step, and eliminate and the present invention The little other details of relation.
Embodiment:Illustrated with reference to Fig. 1-Fig. 4, it is a kind of to realize Condensation photovoltaic battery by carrying out radiation heat transfer with space The system of cooling, including compound parabolic concentrator 1, the bottom of compound parabolic concentrator 1 have a under shed, it is described under open Selective absorbing-transmission-transmitting film 2 is installed at mouthful, the selective absorbing-transmission-transmitting film 2 is affixed on condensation photovoltaic On cell panel 3, the selective absorbing-transmission-transmitting film 2 is made up of matrix 21 and the nano-particle 22 being placed in matrix. Described matrix 21 is polymethylpentene matrix;The nano-particle 22 is TiO2.The thickness of described matrix 21 is 50 μm.
Numerical results show that selective absorbing-transmission-transmitting film of the invention has high emission in 8-13 mu m wavebands Rate and there is low absorptivity in spectral response wave band 380nm-1200nm so that reach and space carry out radiation heat transfer realize reduce The purpose of Condensation photovoltaic battery temperature.The particle radii of the nano-particle 22 are 0.4 μm.The nano-particle is inhaled selective Volume fraction in receipts-transmission-transmitting film 2 is 4%.Make selective absorbing-transmission-transmitting film in 380nm-1200nm ripples The absorptivity of section is as small as possible, makes the emissivity between 8-13 mu m wavebands as big as possible, so as to improve what is exchanged heat with irradiation space Heat exchange efficiency and the cooling effect to Condensation photovoltaic battery.
Matrix 21 in the present embodiment is it is also an option that be polyvinyl fluoride matrix or acrylic resin matrix;The nano-particle 22 can select as SiO2.The particle radii of the nano-particle 22 can select for 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1.0 μm, 2.0 μm, 3.0 μm or 4.0 μm.Body of the nano-particle in selective absorbing-transmission-transmitting film 2 Fraction is also an option that as 5%, 6%, 7%, 8%, 9%, 10%.Fig. 3 and Fig. 4 show selective absorbing-transmission-transmitting The spectral absorption of film is with particle volume fraction (fv) and particle diameter (D) variation relation curve.
Although disclosed embodiment is as above, its content is only to facilitate understand the technical side of the present invention Case and the embodiment used, are not intended to limit the present invention.Any those skilled in the art to which this invention pertains, not On the premise of departing from disclosed core technology scheme, any modification can be made in the form and details of implementation with becoming Change, but the protection domain that the present invention is limited, the scope that must be still limited by appended claims are defined.

Claims (5)

1. a kind of realize the system that Condensation photovoltaic battery is cooled down by carrying out radiation heat transfer with space, it is characterised in that:Including multiple Parabolic condenser (1) is closed, compound parabolic concentrator (1) bottom has under shed, and the lower opening is provided with choosing Selecting property absorption-transmission-transmitting film (2), the selective absorbing-transmission-transmitting film (2) is affixed on Condensation photovoltaic battery plate (3) on, the selective absorbing-transmission-transmitting film (2) is by matrix (21) and nano-particle (22) group being placed in matrix Into.
2. it is according to claim 1 it is a kind of by with space carry out radiation heat transfer realize Condensation photovoltaic battery cool down be System, it is characterised in that:Described matrix (21) be polymethylpentene matrix, polyvinyl fluoride matrix or acrylic resin matrix, it is described Nano-particle (22) is TiO2Or SiO2
3. it is according to claim 1 it is a kind of by with space carry out radiation heat transfer realize Condensation photovoltaic battery cool down be System, it is characterised in that:Described matrix (21) is polymethylpentene matrix, and its thickness is 50 μm;Nano-particle is TiO2Particle.
4. it is according to claim 2 it is a kind of by with space carry out radiation heat transfer realize Condensation photovoltaic battery cool down be System, it is characterised in that:The particle radii of the nano-particle (22) are 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μ M, 1.0 μm, 2.0 μm, 3.0 μm or 4.0 μm.
5. it is according to claim 4 it is a kind of by with space carry out radiation heat transfer realize Condensation photovoltaic battery cool down be System, it is characterised in that:Volume fraction of the nano-particle (22) in selective absorbing-transmission-transmitting film (2) be 4%, 5%th, 6%, 7%, 8%, 9% or 10%.
CN201710717860.0A 2017-08-21 2017-08-21 System for realizing cooling of concentrating photovoltaic cells through radiation heat exchange with space Active CN107316914B (en)

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CN106972068A (en) * 2017-05-27 2017-07-21 武汉大学 The method for improving solar energy power generating plate photovoltaic conversion efficiency
CN110608548A (en) * 2019-10-21 2019-12-24 浙江耀伏能源管理有限公司 Flat plate type ground space radiation cooler with air flow channel

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Publication number Priority date Publication date Assignee Title
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CN110608548A (en) * 2019-10-21 2019-12-24 浙江耀伏能源管理有限公司 Flat plate type ground space radiation cooler with air flow channel
CN110608548B (en) * 2019-10-21 2024-04-23 浙江耀伏能源管理有限公司 Flat plate type ground space radiation cooler with air flow passage

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