CN110700501B - Self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on sponge city - Google Patents
Self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on sponge city Download PDFInfo
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- CN110700501B CN110700501B CN201911029382.XA CN201911029382A CN110700501B CN 110700501 B CN110700501 B CN 110700501B CN 201911029382 A CN201911029382 A CN 201911029382A CN 110700501 B CN110700501 B CN 110700501B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000003860 storage Methods 0.000 claims abstract description 54
- 239000000110 cooling liquid Substances 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 22
- 238000009833 condensation Methods 0.000 claims description 15
- 230000005494 condensation Effects 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 8
- 238000010248 power generation Methods 0.000 abstract description 13
- 230000032683 aging Effects 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- 230000001988 toxicity Effects 0.000 description 1
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- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on a sponge city, which comprises a flat plate, wherein CPC concentrators with outward openings are uniformly distributed on the side wall of the flat plate, a plurality of photovoltaic plates are embedded in the side wall of the flat plate, a groove is formed in the side wall of the CPC concentrator, the side wall of the groove is rotatably connected with a reciprocating lead screw, a lead screw nut is in threaded connection with the reciprocating lead screw, and a cleaning device for cleaning dust on the surfaces of the CPC concentrators and the photovoltaic plates is mounted on the lead screw nut. According to the invention, the condenser pipe is arranged, so that the power generation assembly in the photovoltaic panel can be cooled, the aging speed of the power generation assembly is delayed, the first telescopic air bag and the second telescopic air bag are arranged, the cooling liquid is circulated in the continuous compression and stretching processes of the first telescopic air bag and the second telescopic air bag, the heat on the photovoltaic panel is better absorbed, meanwhile, the water in the water storage tank is pumped into the water storage cavity, and the surfaces of the photovoltaic panel and the CPC condenser are sprayed, cooled and cleaned.
Description
Technical Field
The invention relates to the technical field of sponge city construction, in particular to a self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on a sponge city.
Background
Sponge city is a new generation city rain and flood management concept, means that the city can be like the sponge, absorbs water, impounds, oozes water, water purification when raining, releases the water of depositing and utilizes when needing, realizes that the rainwater freely migrates in the city, and the energy-conserving roof of water-collecting type CPC spotlight photovoltaic can be changed into oneself through collecting the rainwater, preheats domestic water, and resources are saved can carry out the efficient to the rainwater in sponge city and collect the utilization.
The concentration multiple of the CPC condenser can reach 2-6 times, so that the solar utilization efficiency can be improved, the number of photovoltaic cells is reduced, but the temperature of the surface of the photovoltaic panel is increased in a geometric time manner, the influence on a power generation assembly and an inverter is larger along with the higher illumination intensity temperature received by the photovoltaic panel, the effective utilization rate of the power generation assembly in the photovoltaic panel is reduced, the power generation efficiency of the photovoltaic panel is reduced, and the service life of the photovoltaic panel is greatly reduced; in addition, there is a certain amount of dust absorption at its surface in the use of photovoltaic board and CPC spotlight ware, because the dust can produce the scattering to sunshine, make the illumination intensity of sunshine weaken greatly, and then the spotlight effect of CPC spotlight ware to sunshine has been influenced, the generating efficiency to the photovoltaic board causes the influence, and behind the photovoltaic board surface accumulation dust, can make the photovoltaic board be far greater than the part that is not covered by the dust by the partial programming rate that the dust covers under sunshine shines, make the too high hot spot effect that produces of photovoltaic board local temperature, aggravate the ageing and lead to the generating efficiency decline of electricity generation subassembly.
Disclosure of Invention
The invention aims to solve the defects in the prior art, provides a self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on a sponge city, the condensing pipe embedded in the flat plate can absorb heat on the photovoltaic plate, so that the working efficiency of the power generation assembly on the photovoltaic plate is improved, by arranging the impeller fixedly connected to the reciprocating screw rod, the rotation of the impeller enables the screw rod nut to drive the scraper to move back and forth on the surfaces of the photovoltaic panel and the CPC condenser, the surface of the screw nut is cleaned, and in addition, the first telescopic air bag and the second telescopic air bag are continuously compressed and stretched in the process of moving the screw nut back and forth, so that the cooling liquid in the condensation pipe can flow circularly, the absorption of heat on the photovoltaic panel is accelerated, and also can make the rainwater in the water storage tank get into the water storage chamber, carry out the watering cooling clearance through the water spray hole to photovoltaic board and CPC spotlight ware surface.
In order to achieve the purpose, the invention adopts the following technical scheme:
self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on a sponge city comprises a flat plate which is arranged in an upward inclined manner, CPC concentrators with outward openings are uniformly distributed on the side wall of the flat plate, a plurality of photovoltaic plates located in the CPC concentrators are embedded on the side wall of the flat plate, a water storage tank is fixedly connected to the side wall of the flat plate, a condenser pipe is embedded on the side wall of the flat plate, a liquid storage cavity is formed in the side wall of the flat plate, a sliding plug is connected to the inner wall of the liquid storage cavity in a sliding manner, a through hole is formed in the side wall below the liquid storage cavity, a cooling liquid is arranged in a closed cavity between the sliding plug and the inner wall of the liquid storage cavity, the side wall of the condenser pipe is communicated with the inner wall of the liquid storage cavity through a liquid outlet pipe, a groove is formed in the side wall of the CPC, the frame mouth with CPC spotlight ware lateral wall intercommunication is seted up to the recess lateral wall, install the cleaning device who clears up CPC spotlight ware and photovoltaic board surface dust on the screw nut.
Preferably, cleaning device includes the scraper blade through diaphragm fixed connection at the screw nut lateral wall, the scraper blade is crooked to press close to with CPC spotlight ware and photovoltaic board surface mutually, the clean strip of scraper blade lateral wall fixedly connected with, the water storage chamber has been seted up in the scraper blade, the hole for water spraying that a plurality of opening slopes set up downwards is seted up to scraper blade lateral wall equipartition, install the pumping device of water pump in the water storage chamber into the water storage chamber in the frame mouth.
Preferably, the water pumping device includes the first flexible gasbag of fixed connection at frame mouth and diaphragm lateral wall, the outside cover of first flexible gasbag is equipped with the flexible gasbag of second, the flexible gasbag of second constitutes the annular chamber with the both ends of first flexible gasbag, the condenser pipe lateral wall passes through feed liquor pipe and first flexible gasbag intercommunication, the annular chamber inner wall is through absorbing water pipe and storage water tank intercommunication, it only allows water to flow into the first check valve in the annular chamber from the storage water tank to install in the absorption water pipe, the storage water chamber lateral wall passes through intake antrum and annular chamber intercommunication, it only allows water to flow into the second check valve in the storage water chamber from the annular chamber to install in the intake antrum.
The invention has the following beneficial effects:
1. by arranging the condensing pipe embedded in the flat plate, the cooling liquid in the condensing pipe can absorb heat generated on the photovoltaic plate, so that the power generation assembly in the photovoltaic plate is cooled, and the aging speed of the power generation assembly is delayed;
2. by arranging the impeller fixedly connected to the reciprocating screw rod, when wind exists on a roof, the impeller can be rotated, so that the screw rod nut can move back and forth on the reciprocating screw rod, the scraper plate is driven by the transverse plate to move back and forth on the surfaces of the photovoltaic panel and the CPC condenser, dust on the surface of the photovoltaic panel and the CPC condenser is cleaned, the situation that the condensing performance of the CPC condenser is weakened due to excessive dust is avoided, the power generation efficiency of the photovoltaic panel is further influenced, and meanwhile, the situation that the generation of a hot spot effect is caused by excessive dust on the photovoltaic panel, and the power generation efficiency of the photovoltaic panel is influenced is also avoided;
3. by arranging the first telescopic air bag fixedly connected to the frame opening and the side wall of the transverse plate, the first telescopic air bag can be continuously compressed and expanded in the process that the transverse plate continuously moves back and forth, so that cooling liquid in the condensation pipe is extracted, the cooling liquid in the condensation pipe circularly flows, the absorption effect of the cooling liquid on heat generated on the photovoltaic panel is improved, and the effects of reducing the aging speed of a power generation assembly and improving the power generation efficiency of the photovoltaic panel are promoted;
4. by arranging the second telescopic air bag sleeved on the first telescopic air bag, in the process that the transverse plate continuously moves back and forth, the second telescopic air bag can continuously extract water in the water storage tank, extrude the water in the annular cavity into the water storage cavity, and spray the water out of the annular cavity through the water spraying holes to spray water, cool and clean the surfaces of the photovoltaic panel and the CPC condenser, further cool and clean the photovoltaic panel, and prolong the service life of the photovoltaic panel;
5. through setting the hole for water spraying to the slope orientation downwards, can strengthen the radial impact force of the water on photovoltaic board and CPC concentrator surface in the water storage intracavity when spraying for clean effect is better.
Drawings
FIG. 1 is a schematic structural diagram of a self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on a sponge city, which is provided by the invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
fig. 3 is a schematic side sectional structure view of a self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on a sponge city.
In the figure: 1 flat board, 2CPC spotlight ware, 3 photovoltaic board, 4 storage tanks, 5 condenser pipes, 6 recesses, 7 reciprocal lead screws, 8 impellers, 9 lead screw nuts, 10 diaphragm, 11 frame mouths, 12 first flexible gasbags, 13 second flexible gasbags, 14 absorb water pipe, 15 first check valves, 16 feed liquor pipes, 17 scraper blades, 18 water storage chamber, 19 intake antrums, 20 second check valves, 21 stock solution chamber, 22 drain pipes, 23 sliding plugs.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, a self-cleaning CPC light-gathering photovoltaic energy-saving flat roof based on a sponge city comprises a flat plate 1 which is obliquely and upwardly arranged, CPC light-gathering devices 2 with outward openings are uniformly distributed on the side wall of the flat plate 1, the surface of each CPC light-gathering device 2 is coated with reflective coating, sunlight can be gathered to the greatest extent, the power generation efficiency of the photovoltaic plate 3 is increased, a plurality of photovoltaic plates 3 which are positioned in the CPC light-gathering devices 2 are embedded in the side wall of the flat plate 1, a water storage tank 4 is fixedly connected to the side wall of the flat plate 1, a condenser pipe 5 is embedded in the side wall of the flat plate 1, a liquid storage cavity 21 is formed in the side wall of the flat plate 1, a sliding plug 23 is slidably connected to the inner wall of the liquid storage cavity 21, the sliding plug 23 is elastically connected with the bottom of the liquid storage cavity 21 through a spring, a through hole is formed in the, the propylene glycol has no pollution and toxicity to human bodies and environment, has good oxidation resistance, good circulation and good heat conduction efficiency, so that the heat absorption on the photovoltaic panel 3 is greatly improved, the side wall of the condenser pipe 5 is communicated with the liquid storage cavity 21 through the liquid outlet pipe 22, the side wall of the CPC condenser 2 is provided with a groove 6, the side wall of the groove 6 is rotationally connected with a reciprocating screw 7, one end of the reciprocating screw 7 penetrates through the side wall of the CPC condenser 2 and is fixedly connected with an impeller 8, the blade of the impeller 8 is larger, and have sufficient distance with dull and stereotyped 1's lateral wall for dull and stereotyped 1 can not hinder impeller 8 rear air circulation and guarantee that the air current can drive impeller 8 and rotate when the roof rises wind, and threaded connection has screw nut 9 on the reciprocal lead screw 7, and frame mouth 11 with 2 lateral walls of CPC spotlight ware intercommunication is seted up to 6 lateral walls of recess, installs the cleaning device who clears up CPC spotlight ware 2 and 3 surperficial dusts of photovoltaic board on screw nut 9.
Cleaning device includes through diaphragm 10 fixed connection at the scraper blade 17 of 9 lateral walls of lead screw nut, scraper blade 17 bends to press close to with CPC spotlight ware 2 and 3 surfaces of photovoltaic board mutually, the clean strip of scraper blade 17 lateral wall fixedly connected with, water storage chamber 18 has been seted up in the scraper blade 17, scraper blade 17 lateral wall equipartition has the hole for water spraying that the opening slope set up downwards, can strengthen the water storage intracavity when spraying and to the radial impact force on photovoltaic board and CPC spotlight ware surface, it is better to make clean effect, clean strip and 3 surface laminating of photovoltaic board, not only can clear up the dust on photovoltaic board 3 surfaces, can also strike off the water stain on photovoltaic board 3 surfaces, avoid water stain behind photovoltaic board 3 surfaces, water stain forms the facula after the evaporation under the shining of sunshine, lead to the production of hot spot effect.
Furthermore, cleaning device all adopts transparent material to make, can cause to shelter from it when avoiding cleaning device to stop on photovoltaic board 3 surface for photovoltaic board 3 receives the uneven being heated of its inside silicon wafer when sunshine shines, thereby produces the hot spot effect, installs the pumping device of water pump income water storage chamber 18 in the storage water tank 4 in the frame mouth 11.
The water pumping device comprises a first telescopic air bag 12 fixedly connected with the side walls of a frame opening 11 and a transverse plate 10, a second telescopic air bag 13 is sleeved outside the first telescopic air bag 12, the second telescopic air bag 13 and two ends of the first telescopic air bag 12 form an annular cavity, a sun shield is arranged on the frame opening 11, the first telescopic air bag 12 and the second telescopic air bag 13 can be prevented from aging under the irradiation of long-term sunlight, the service life of the water pumping device is prolonged, the side wall of a condensation pipe 5 is communicated with the first telescopic air bag 12 through a liquid inlet pipe 16, the cooling liquid in the condensation pipe 5 can be extruded and extracted in the continuous compression and stretching process of the first telescopic air bag 12, the cooling liquid in the condensation pipe 5 can flow circularly, the cooling liquid absorbed by the condensation pipe 5 is mixed with the cooling liquid not absorbed by the heat, the temperature of the cooling liquid in the condensation pipe 5 is reduced, and further, a plurality of radiating fins communicated with the inner wall of a liquid storage cavity 21 can be fixedly connected with the lower end, the temperature of the cooling liquid in the liquid storage cavity 21 can be diffused, so that the cooling liquid can always keep good cooling effect, the absorption of heat on the photovoltaic panel 3 is promoted, the inner wall of the annular cavity is communicated with the water storage tank 4 through the water suction pipe 14, the water suction pipe 14 is internally provided with a first one-way valve 15 which only allows water to flow into the annular cavity from the water storage tank 4, the side wall of the water storage cavity 18 is communicated with the annular cavity through a water inlet cavity 19, the water inlet cavity 19 is internally provided with a second one-way valve 20 which only allows water to flow into the water storage cavity 18 from the annular cavity, in the continuous compression and stretching process of the second telescopic air bag 13, water in the water storage tank 4 can be pumped into the water storage cavity 18, the surfaces of the photovoltaic panel 3 and the CPC condenser 2 are sprayed, cooled and cleaned through the water spraying holes, because flat 1 slope sets up for the water that carries out the cooling cleanness to photovoltaic board 3 and CPC concentrator 2 surface finally flows into storage water tank 4 and stores.
According to the invention, when the photovoltaic panel 3 is illuminated to generate electricity, the cooling liquid in the condenser pipe 5 can absorb heat generated on the photovoltaic panel 3, when wind rises from a roof, the impeller 8 can be rotated by the wind, so that the screw nut 9 can move back and forth on the reciprocating screw 7, the transverse plate 10 drives the scraper 17 to move back and forth on the surfaces of the photovoltaic panel 3 and the CPC condenser 2, and the cleaning strips on the scraper 17 can clean dust on the surfaces of the scraper 17;
in the process that a screw nut 9 drives a transverse plate 10 to move back and forth, a first telescopic air bag 12 and a second telescopic air bag 13 are continuously compressed and stretched, in the process that the first telescopic air bag 12 is compressed and stretched, cooling liquid in a condensation pipe 5 can be extracted, the cooling liquid in the condensation pipe 5 flows circularly, the cooling liquid is always kept at a lower temperature to absorb heat on a photovoltaic panel 3, in the process that the second telescopic air bag 13 is compressed, water in an annular cavity can flow into a water storage cavity 18 through a water inlet cavity 19, the surfaces of the photovoltaic panel 3 and a CPC condenser 2 are sprayed, cooled and cleaned through a water spraying hole, and in the process that the second telescopic air bag 13 is stretched, the water in the water storage cavity 4 can be sucked into the annular cavity through a water suction pipe 14 so as to be used next time;
at night, photovoltaic board 3 is not being heated, and the coolant liquid can distribute away the heat of self this moment for the coolant liquid gets back to initial temperature, so that carry out better absorption to the heat on the photovoltaic board 3 in daytime.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. Self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on sponge city, comprising a flat plate (1) which is inclined upwards and is provided with an outward opening CPC concentrator (2), wherein the side wall of the flat plate (1) is uniformly provided with a plurality of photovoltaic plates (3) which are positioned in the CPC concentrator (2), the side wall of the flat plate (1) is fixedly connected with a water storage tank (4), the self-cleaning CPC concentrating photovoltaic energy-saving flat roof is characterized in that the side wall of the flat plate (1) is embedded with a condenser pipe (5), the side wall of the flat plate (1) is provided with a liquid storage cavity (21), the inner wall of the liquid storage cavity (21) is connected with a sliding plug (23) in a sliding manner, the side wall of the liquid storage cavity (21) is provided with a through hole, a cooling liquid is arranged in a sealed cavity between the sliding plug (23) and the inner wall of the liquid storage cavity (21), the side wall, the lateral wall of the CPC condenser (2) is provided with a groove (6), the lateral wall of the groove (6) is rotatably connected with a reciprocating lead screw (7), one end of the reciprocating lead screw (7) penetrates through the lateral wall of the CPC condenser (2) and is fixedly connected with an impeller (8), the reciprocating lead screw (7) is in threaded connection with a lead screw nut (9), the lateral wall of the groove (6) is provided with a frame opening (11) communicated with the lateral wall of the CPC condenser (2), and the lead screw nut (9) is provided with a cleaning device for cleaning dust on the surfaces of the CPC condenser (2) and the photovoltaic panel (3); the cleaning device comprises a scraper (17) fixedly connected to the side wall of a screw nut (9) through a transverse plate (10), the scraper (17) is bent to be close to the surfaces of a CPC condenser (2) and a photovoltaic panel (3), a cleaning strip is fixedly connected to the side wall of the scraper (17), a water storage cavity (18) is formed in the scraper (17), a plurality of water spraying holes with openings arranged obliquely downwards are uniformly distributed in the side wall of the scraper (17), and a water pumping device for pumping water in the water storage tank (4) into the water storage cavity (18) is mounted in a frame opening (11); the water pumping device comprises a first telescopic air bag (12) fixedly connected to the frame opening (11) and the side wall of the transverse plate (10), a second telescopic air bag (13) is sleeved on the outer side of the first telescopic air bag (12), the second telescopic air bag (13) and two ends of the first telescopic air bag (12) form an annular cavity, the side wall of the condenser pipe (5) is communicated with the first telescopic air bag (12) through a liquid inlet pipe (16), the inner wall of the annular cavity is communicated with the water storage tank (4) through a water suction pipe (14), a first one-way valve (15) only allowing water to flow into the annular cavity from the water storage tank (4) is installed in the water suction pipe (14), the side wall of the water storage cavity (18) is communicated with the annular cavity through a water inlet cavity (19), and a second one-way valve (20) only allowing water to flow into the water storage cavity (18) from the annular cavity is installed in the water;
the lateral wall of the condensation pipe (5) is communicated with the first telescopic air bag (12) through the liquid inlet pipe (16), and in the continuous compression and stretching processes of the first telescopic air bag (12), the cooling liquid in the condensation pipe (5) can be extruded and extracted, so that the cooling liquid in the condensation pipe (5) circularly flows, the cooling liquid which absorbs heat in the condensation pipe (5) is mixed with the cooling liquid which does not absorb heat, and the temperature of the cooling liquid in the condensation pipe (5) is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911029382.XA CN110700501B (en) | 2019-10-28 | 2019-10-28 | Self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on sponge city |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911029382.XA CN110700501B (en) | 2019-10-28 | 2019-10-28 | Self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on sponge city |
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| Publication Number | Publication Date |
|---|---|
| CN110700501A CN110700501A (en) | 2020-01-17 |
| CN110700501B true CN110700501B (en) | 2021-07-02 |
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| CN201911029382.XA Expired - Fee Related CN110700501B (en) | 2019-10-28 | 2019-10-28 | Self-cleaning CPC concentrating photovoltaic energy-saving flat roof based on sponge city |
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|---|---|---|---|---|
| CN111248000B (en) * | 2020-02-28 | 2021-12-10 | 德清凌凯科技发展有限公司 | Green house with automatic dust removal function |
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