CN102900207B - Device for two-way cooling of photovoltaic building by using natural low-temperature heat source - Google Patents
Device for two-way cooling of photovoltaic building by using natural low-temperature heat source Download PDFInfo
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- CN102900207B CN102900207B CN201210394354.XA CN201210394354A CN102900207B CN 102900207 B CN102900207 B CN 102900207B CN 201210394354 A CN201210394354 A CN 201210394354A CN 102900207 B CN102900207 B CN 102900207B
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- 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
Abstract
The invention discloses a device for two-way cooling of a photovoltaic building by using a natural low-temperature heat source. The device comprises a plurality of photovoltaic assemblies, a cooling part, a low-temperature heat source part and a connecting pipeline system, wherein the photovoltaic assemblies are arranged at the roof through an assembly framework; the cooling part is positioned at the roof; the low-temperature heat source part is positioned underground; and the connecting pipeline system is used for mutually communicating the cooling part with the low-temperature heat source part. The cooling part comprises pit-shaped cooling holes formed below the photovoltaic assemblies; and cooling air of the low-temperature heat source part is transmitted to the pit-shaped cooling holes for cooling the photovoltaic assemblies by the connecting pipeline system and cooling the roof during flowing through the roof. According to the device disclosed by the invention, natural underground cold air is used as a low-temperature heat source and is used for gradually cooling the indoor of an inclined building and photovoltaic building integrated solar panels, and thus the temperature environment of the indoor is improved and the power generation efficiency of the solar panel is increased; and in addition, no energy source input is needed and the pollution to the environment is avoided. The device has stronger practicability, environment friendliness and economy and is especially worthy of being popularized in regions with great day-and-night temperature difference and plateau regions.
Description
Technical field
The present invention relates to BIPV building roof device, especially a kind of device utilizing the two-way cooling of natural low temperature thermal source photovoltaic building.
Background technology
The photovoltaic module of BIPV must meet the performance requirement of photovoltaic module, meets relevant building safety performance requirement again simultaneously, therefore needs the mechanics higher than common component and thermal property.Especially heat-resisting temperature, in different places, different story heights, different roof-top manner, all proposes strict requirement to its thermal property.
Photovoltaic battery panel physical index and the display of relevant operating characteristic thereof: when the operating temperature of photovoltaic cell component is higher, work efficiency drop.Along with the rising of photovoltaic battery temperature, open-circuit voltage reduces, at 20-100 degree Celsius range, approximately often raise 1 degree Celsius, the voltage of photovoltaic cell reduces 2mV, and photoelectric current slightly rises with the rising of temperature, and the photoelectric current approximately often raising 1 degree Celsius of battery increases one thousandth.Generally speaking, temperature often raises 1 degree Celsius, then power reduces 0.35%.The basic conception of Here it is temperature coefficient, different photovoltaic cells, temperature coefficient is also different, so temperature coefficient is one of judgment criteria of photovoltaic cell performance.Be not difficult to find out the impact of temperature on photovoltaic cell capable of generating power efficiency thus, how improve generating efficiency and say to be exactly the operating temperature how reducing it from another aspect.
The photovoltaic module used in BIPV building is generally placed in metope and roof, and due to the impact of the conversion such as geographical position, four seasons weather factor, this medium temperature missionary society is very large; Add that global climate in recent years warms, be particularly bound to quite high in period in summer operating temperature, and solar radiation is the strongest and the generated output of solar cell is also the highest just at this moment.As can be seen here, how to avoid too high or its temperature of direct reduction of the temperature rise of assembly self, just become the key solving temperature and this conflict of generating efficiency.
In another one, from building and the correlation of environment temperature thereof, building ground, a building near-bottom temperature height is decided by that it is with or without underground building structure.For the north, the building with or without basement was done to the temperature comparisons of first floor in dog days in summer indoor, and consequently under the condition of closing window, had one deck temperature of basement will exceed 7-8 degree than what do not have.This has absolutely proved the impact of underground building structure on temperature in building, also reflect from another angle the huge cooling potential that underground low temperature thermal source contains, it not only can be used as the refrigeration low-temperature thermal source of building interior, and can also be lower the temperature with the solar panel of building one.
In sum, by two problems is connected solution, for the photovoltaic module being arranged at roof, obtain higher generating efficiency in summer and reduce the operating temperature of photovoltaic roof, the function that cools on roof can be had both again simultaneously, become the overall breach solved.
Summary of the invention
For prior art Problems existing, the object of the present invention is to provide a kind of device simple, is the device utilizing the two-way cooling of natural low temperature thermal source photovoltaic building that photovoltaic module and roof lower the temperature simultaneously.
For achieving the above object, a kind of device utilizing the two-way cooling of natural low temperature thermal source photovoltaic building of the present invention, comprise and be arranged on some photovoltaic modulies on roof, the cooling portion being positioned at roof, the low-temperature heat source portion being positioned at underground and the connecting line system be interconnected in cooling portion and low-temperature heat source portion by component framework, wherein, cooling portion comprises the shape cooling cave, hole be arranged on below photovoltaic module, the cooling-air in low-temperature heat source portion is delivered to cooling cave and comes for photovoltaic module cooling by described connecting line system, and is cooling roof when circulating through roof.
Further, described low-temperature heat source portion comprises the low-temperature heat source room being arranged at underground.
Further, described cooling portion also comprises cooling layer, and this cooling layer comprises cooling air channel and heat-sink shell, and heat-sink shell is arranged on roof, and cooling air channel is arranged between heat-sink shell and described component framework.
Further, the lower end in described cooling air channel is connected with the cooling-air input of described connecting line system, and the gas access in all described cooling caves is all connected with described cooling air channel, by described cooling air channel to all uniform input cooling-airs in described cooling cave.
Further, described connecting line system comprise the described low-temperature heat source portion of circulation serial connection to described cooling portion upcast ventilation pipe and lower air conduit, be communicated with all described cooling caves and to its input cooling-air inlet air pipe network, be communicated with all described cooling caves and the air-out pipe network of air after exporting heat absorption; Total port of air-out pipe network is communicated with lower air conduit, and both junctions are provided with gate out switch.
Further, entry switch is provided with between the lower port in described cooling air channel and upcast ventilation pipe upper port.
Further, the cooling-air input port in all described cooling caves is arranged in parallel by described inlet air pipe network and is all communicated with cooling air channel, and the air-out in all described cooling caves is arranged in parallel by described air-out pipe network and is all communicated with described lower air conduit top and exports gas to it.
Further, described cooling cave is the square hole seat on marginal belt projection edge, and described photovoltaic module is fixedly mounted on projection along upper.
Further, the end that described upcast ventilation pipe and lower air conduit are positioned at described low-temperature heat source room is respectively arranged with air pump, lower air pump.
Further, through swtich is provided with between the upper port in described cooling air channel and lower air conduit.
The present invention utilizes natural underground cold air as low-temperature heat source, successively cooling down is carried out to the indoor of inclined-plane building and the solar cell panel assembly of photovoltaic building one, namely the generating efficiency that indoor temperature environment turn improves solar panel is improved, and without any need for the energy drop into, free from environmental pollution, have larger practicality and environmental protection and economy, especially comparatively large at day and night temperature and highlands is worthy to be popularized.
Accompanying drawing explanation
Fig. 1 is the global sections schematic front view of apparatus of the present invention structure;
Fig. 2 is the top structure schematic diagram of apparatus of the present invention structure;
Fig. 3 is that the cooling-air at apparatus of the present invention top flows to schematic diagram.
Detailed description of the invention
Below, with reference to accompanying drawing, the present invention is more fully illustrated, shown in the drawings of exemplary embodiment of the present invention.But the present invention can be presented as multiple multi-form, and should not be construed as the exemplary embodiment being confined to describe here.But, these embodiments are provided, thus make the present invention comprehensively with complete, and scope of the present invention is fully conveyed to those of ordinary skill in the art.
For ease of illustrating, here can use such as " on ", the space relative terms such as D score " left side " " right side ", for illustration of the element of shown in figure or the feature relation relative to another element or feature.It should be understood that except the orientation shown in figure, spatial terminology is intended to comprise device different azimuth in use or operation.Such as, if the device in figure is squeezed, be stated as the element being positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, exemplary term D score can comprise upper and lower both orientation.Device can otherwise be located (90-degree rotation or be positioned at other orientation), and space used here illustrates relatively can correspondingly explain.
Application principle: utilize cold air convection to circulate conduction cooling, air as the carrier of heat in low-temperature heat source heat release, absorb heat at high temperature heat source.Wherein high temperature heat source refers to roof and cooling position, cave, and the heat of high temperature of there is respectively from indoor and solar cell panel assembly, and therefore heat absorption can reduce the environment temperature of two places and reach cooling object.
As shown in Figure 1 to Figure 3, a kind of device utilizing the two-way cooling of natural low temperature thermal source photovoltaic building of the present invention, the connecting line system comprising the cooling portion being positioned at roof, the low-temperature heat source portion being positioned at underground and cooling portion and low-temperature heat source portion are interconnected, cooling portion, low-temperature heat source portion and connecting line system integration one.
Wherein, cooling portion comprises photovoltaic module layer and cooling layer; Low-temperature heat source portion comprises the low-temperature heat source room 7 being arranged at underground.
Connecting line system comprises: upcast ventilation pipe 8 and the lower air conduit 9 in circulation serial connection underground low temperature thermal source portion to cooling roof portion, is communicated with photovoltaic module layer and layer of lowering the temperature inlet air pipe network 13, be communicated with photovoltaic module layer and lower air conduit 9 air-out pipe network 14, gate out switch 16, be communicated with upcast ventilation pipe 8 and the entry switch 15 of layer of lowering the temperature.The entry switch 15 of connecting line system is arranged between the low side on upcast ventilation pipe 8 top and cooling inclined-plane, air channel 10, and gate out switch 16 is arranged at lower air conduit 9 top and air-out pipe network 14 between the interface of component framework 1 beveled top end.
Photovoltaic module Rotating fields illustrates: as shown in Figure 1, 2, it is arranged at the inclined-plane on roof, comprise: the hole shape cooling cave 4 below component framework 1, spiral-lock some photovoltaic modulies 3 thereon, photovoltaic module 3, and the inlet air pipe network 13 be communicated with high-end side with the low side side, inclined-plane in cooling cave 4 respectively and air-out pipe network 14.Wherein inlet air pipe network 13 is communicated with again cooling top, air channel 10; Air-out pipe network 14 is communicated with cooling top, cave 4 and lower air conduit 9 top at the beveled top end of component framework 1 again.Several are along cooling cave 4 parallel communication in air-out pipe network 14 of inclined-plane arrangement.In the present invention, the cooling-air input port in all cooling caves 4 is arranged in parallel by inlet air pipe network 13 and is all communicated with cooling air channel 10, and the air-out in all cooling caves 4 is arranged in parallel by air-out pipe network 14 and is all communicated with lower air conduit 9 top exports gas in its pipe.The vibrational power flow of inlet air pipe network 13 and air-out pipe network 14, reaches uniform air distribution, the effect that gas transmission is unobstructed.
Cooling cave 4 is the square hole seat on marginal belt projection edge, and photovoltaic module 3 is fixedly mounted on projection along upper, and itself and photovoltaic module 3 form the bottleneck bottle cap matching structure being with projection edge.
Cooling roof Rotating fields illustrates: as shown in Figure 1, 2, it comprises cooling air channel 10 and heat-sink shell 2, cooling air channel 10 is a rectangular roof space structure, setting position is between the photovoltaic module layer above it and between the heat-sink shell below it 2, heat-sink shell 2 is arranged on roof, heat-sink shell 2 is made up of Heat Conduction Material, the heat on heat-sink shell 2 Absorbable rod roof, to reduce the temperature on roof and indoor.
During work: as shown in Figure 1, 2, 3, the cold air of system is by opening, in bottom, low-temperature heat source room 7 and along sunny side wall upcast ventilation pipe 8 setting up and down, deliver to cooling air channel 10 through entry switch 15 again and come for cooling roof; The bottom simultaneously entering cooling cave 4 by inlet air pipe network 13 opening at top, air channel 10 of lowering the temperature is that photovoltaic module 3 is lowered the temperature, cooling-air to enter and by air-out pipe network 14 through the interface at top, cave 4 of lowering the temperature subsequently, then enters lower air conduit 9 through gate out switch 16 and transport to underground and complete down cycles.The upcast ventilation pipe 8, the lower air pump 5 of lower air conduit 9 liang of interfaces, the upper air pump 6 that are positioned at low-temperature heat source room 7 can be opened therebetween if needed and promote circulating cold air.
Through swtich 18 is provided with between the upper port in cooling air channel 10 and lower air conduit 9, through swtich 18 controls to be communicated with, to isolate the top of lower air conduit 9 and the slope headroom in cooling air channel 10, when needs accelerate room temperature lowering, open through swtich 18, cooling air channel 10 is directly communicated with lower air conduit 9, cold air in low-temperature heat source room 7 circulates from upcast ventilation pipe 8 quickly through cooling air channel 10, lower air conduit 9, reaches by strengthening circulating cold air the object accelerating indoor 19 coolings.Wherein single arrow 21 represents circulating cold air flow direction.
Claims (9)
1. one kind utilizes the device of the two-way cooling of natural low temperature thermal source photovoltaic building, it is characterized in that, this device comprises and is arranged on some photovoltaic modulies on roof, the cooling portion being positioned at roof, the low-temperature heat source portion being positioned at underground and the connecting line system be interconnected in cooling portion and low-temperature heat source portion by component framework, wherein, cooling portion comprises the shape cooling cave, hole be arranged on below photovoltaic module, the cooling-air in low-temperature heat source portion is delivered to cooling cave and comes for photovoltaic module cooling by described connecting line system, and is cooling roof when circulating through roof; Described cooling portion also comprises cooling layer, and this cooling layer comprises cooling air channel and heat-sink shell, and heat-sink shell is arranged on roof, and cooling air channel is arranged between heat-sink shell and described component framework.
2. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 1, it is characterized in that, described low-temperature heat source portion comprises the low-temperature heat source room being arranged at underground.
3. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 2, it is characterized in that, the lower end in described cooling air channel is connected with the cooling-air input of described connecting line system, and the gas access in all described cooling caves is all connected with described cooling air channel, by described cooling air channel to all uniform input cooling-airs in described cooling cave.
4. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 1, it is characterized in that, described connecting line system comprise the described low-temperature heat source portion of circulation serial connection to described cooling portion upcast ventilation pipe and lower air conduit, be communicated with all described cooling caves and to its input cooling-air inlet air pipe network, be communicated with all described cooling caves and the air-out pipe network of air after exporting heat absorption; Total port of air-out pipe network is communicated with lower air conduit, and both junctions are provided with gate out switch.
5. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 4, it is characterized in that, between the lower port in described cooling air channel and upcast ventilation pipe upper port, be provided with entry switch.
6. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 4, it is characterized in that, the cooling-air input port in all described cooling caves is arranged in parallel by described inlet air pipe network and is all communicated with cooling air channel, and the air-out in all described cooling caves is arranged in parallel by described air-out pipe network and is all communicated with described lower air conduit top and exports gas to it.
7. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 1, it is characterized in that, described cooling cave is the square hole seat on marginal belt projection edge, and described photovoltaic module is fixedly mounted on projection along upper.
8. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 4, it is characterized in that, the end that described upcast ventilation pipe and lower air conduit are positioned at described low-temperature heat source room is respectively arranged with air pump, lower air pump.
9. utilize the device of the two-way cooling of natural low temperature thermal source photovoltaic building as claimed in claim 4, it is characterized in that, between the upper port in described cooling air channel and lower air conduit, be provided with through swtich.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210394354.XA CN102900207B (en) | 2012-10-17 | 2012-10-17 | Device for two-way cooling of photovoltaic building by using natural low-temperature heat source |
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| CN201210394354.XA CN102900207B (en) | 2012-10-17 | 2012-10-17 | Device for two-way cooling of photovoltaic building by using natural low-temperature heat source |
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| CN102900207B true CN102900207B (en) | 2015-05-06 |
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| CN106505936B (en) * | 2016-12-30 | 2018-08-17 | 安徽晶润新能源有限公司 | A kind of photovoltaic panel installing support |
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| CN109945372A (en) * | 2019-04-12 | 2019-06-28 | 浙江工业大学 | A kind of high-efficiency solar isopentane air-conditioning system |
| CN110752822A (en) * | 2019-11-08 | 2020-02-04 | 诸暨咯星新能源科技有限公司 | Water-saving photovoltaic panel temperature maintaining system |
| CN111507626A (en) * | 2020-04-18 | 2020-08-07 | 东北电力大学 | Uncertainty-considered economic evaluation method for photovoltaic roof-retired battery energy storage system |
| CN112688197B (en) * | 2020-12-22 | 2023-05-09 | 河南省同信电力工程有限公司 | New forms of energy electric power engineering block terminal |
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| CN102339888A (en) * | 2011-10-14 | 2012-02-01 | 河南科达节能环保有限公司 | Integrated system for improving photoelectric efficiency |
| DE102010033560A1 (en) * | 2010-07-29 | 2012-02-02 | Peter Borst | Photovoltaic system installed at roof of house, has cooling medium supply installation to conduct cooling medium into intermediate space between photovoltaic module and carrier |
| CN202324416U (en) * | 2011-11-18 | 2012-07-11 | 机械工业第三设计研究院 | Natural ventilation system combined with spot light photovoltaic electric plate |
| CN202899475U (en) * | 2012-10-17 | 2013-04-24 | 中海阳新能源电力股份有限公司 | Two-way cooling device capable of utilizing natural low temperature heat source for photovoltaic buildings |
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| JPH0510543A (en) * | 1991-07-01 | 1993-01-19 | Shunichi Kikuchi | Indoor air-conditioning system |
| DE102010033560A1 (en) * | 2010-07-29 | 2012-02-02 | Peter Borst | Photovoltaic system installed at roof of house, has cooling medium supply installation to conduct cooling medium into intermediate space between photovoltaic module and carrier |
| CN102339888A (en) * | 2011-10-14 | 2012-02-01 | 河南科达节能环保有限公司 | Integrated system for improving photoelectric efficiency |
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Denomination of invention: Device for two-way cooling of photovoltaic building by using natural low-temperature heat source Effective date of registration: 20170726 Granted publication date: 20150506 Pledgee: Beijing culture science and technology finance leasing Limited by Share Ltd Pledgor: Rayspower Energy Group Co., Ltd. Registration number: 2017990000687 |
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