KR20130015599A - Efficiency enhancement equipment for solar photovoltaic power facilities - Google Patents
Efficiency enhancement equipment for solar photovoltaic power facilities Download PDFInfo
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- KR20130015599A KR20130015599A KR1020110077673A KR20110077673A KR20130015599A KR 20130015599 A KR20130015599 A KR 20130015599A KR 1020110077673 A KR1020110077673 A KR 1020110077673A KR 20110077673 A KR20110077673 A KR 20110077673A KR 20130015599 A KR20130015599 A KR 20130015599A
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- Prior art keywords
- cooling water
- coolant
- flow
- rotation
- unit
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- 239000000498 cooling water Substances 0.000 claims abstract description 121
- 239000007921 spray Substances 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000002826 coolant Substances 0.000 claims description 67
- 238000002347 injection Methods 0.000 claims description 46
- 239000007924 injection Substances 0.000 claims description 46
- 230000004075 alteration Effects 0.000 claims description 32
- 238000010248 power generation Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 24
- 230000006872 improvement Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 description 19
- 230000008878 coupling Effects 0.000 description 14
- 238000005859 coupling reaction Methods 0.000 description 14
- 238000001816 cooling Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012546 transfer Methods 0.000 description 4
- 230000005514 two-phase flow Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
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- 239000004576 sand Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
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- 230000008014 freezing Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
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- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Images
Classifications
-
- 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
-
- 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
Description
The present invention relates to a facility for improving efficiency of a photovoltaic power generation facility, and more particularly, to improve the cooling and cleaning performance of a photovoltaic module and to reduce the amount of cooling water by allowing external air to be injected and sprayed with cooling water. The present invention relates to a facility for improving efficiency of photovoltaic facilities.
Generally, the method of using solar energy is divided into a method using solar heat and a method using sunlight. The method of using solar heat is to heat and generate electricity using water heated by the sun, and the method of using solar light can generate electricity by using the light of the sun to operate various machines and appliances. It is called solar power.
Among the above-mentioned methods, photovoltaic power generation is a photovoltaic effect in which a photovoltaic panel having n-type doping on a silicon crystal and pn-junction is irradiated with sunlight to generate an electromotive force due to the photovoltaic energy, To generate electricity.
To this end, a solar cell for condensing sunlight, a photovoltaic module that is an assembly of solar cells, and a solar array in which the solar cells are constantly arranged are required.
For example, when light is incident on the solar module from the outside, electrons in the conduction band of the p-type semiconductor are excited to the valence band by the incident light energy. One electron-hole pair (EHP) is formed inside the p-type semiconductor, and electrons in the electron-hole pair generated are transferred to the n-type semiconductor by an electric field existing between the pn junctions. It passes over and supplies current to the outside.
Unlike existing energy sources such as fossil raw materials, sunlight is a clean energy source that does not have the danger of global warming, such as greenhouse gas emissions, noise, environmental destruction, etc., and there is no fear of depletion. Unlike other types of wind and seawater, solar power generation facilities are free from installation and maintenance costs.
However, in the case of the most widely used silicon solar cell, when the temperature of the photovoltaic module rises, output decrease of 0.5% per 1 ° C occurs. According to these characteristics, the output of solar power peaks in spring and autumn, not in the summer when the sun is the longest. This increase in temperature is a major cause of lowering the power generation efficiency of photovoltaic power generation.
In addition, the photovoltaic module has a disadvantage that dirt may easily accumulate on the solar panel due to a weather phenomenon such as yellow sand or bad weather. If dirt accumulates on the photovoltaic module, the light absorption rate of the photovoltaic module is remarkably decreased, and thus, power generation efficiency may also be reduced.
In addition, when rain or snow falls on the solar panel in winter, a decrease in power generation efficiency may occur. In order to prevent such deterioration of power generation efficiency due to dirt, snow, and rain, the efficiency improvement equipment (maintenance equipment) of photovoltaic power generation facilities is used.
In order to improve the efficiency of solar power generation facilities, the cooling module which cools the temperature of the solar module and the cleaning and snow removal of the dirt, snow, rain etc. accumulated on the solar panel, It functions to maintain the solar power generation facilities.
Such efficiency improvement equipment of photovoltaic power generation equipment uses enormous amounts of water (functional water, cooling water, snow removal, etc., but may be collectively referred to as cooling water) for cooling and cleaning solar modules. . Depending on the location, groundwater, tap water, and river water are used as cooling water. In many areas, it is difficult to supply sufficient cooling water, and the electricity used for supplying and spraying the cooling water also reduces the efficiency of the photovoltaic plant as a whole. . Therefore, efficient use of cooling water is one of the most important factors in the design of the device for improving the efficiency of photovoltaic power generation facilities.
The present invention is to solve this problem, by allowing the external air to be injected with the coolant in the cooling water injection means to improve the cooling and cleaning performance of the photovoltaic module by two phase flow and to reduce the amount of cooling water used It is an object of the present invention to provide a facility for improving efficiency of photovoltaic power generation facilities.
In addition, an object of the present invention is to provide a facility for improving efficiency of a photovoltaic power generation device in which a coolant injection means can reciprocate and rotate by a mechanical mechanism using a flow of coolant without a separate electric power.
In order to achieve the above object, the present invention, by increasing the efficiency of the photovoltaic power generation facilities to maintain or improve the efficiency by spraying the cooling water to the photovoltaic power generation facilities comprising a solar module for collecting electricity to generate electricity An apparatus comprising: a storage tank for storing cooling water: cooling water spraying means for spraying cooling water on the solar module; And a pump for pumping the cooling water stored in the storage tank and supplying the cooling water to the cooling water injection means through a cooling water supply pipe, wherein the cooling water injection means generates negative pressure therein to introduce external air into the flow of the cooling water. It provides an efficiency improving equipment of the solar power plant characterized in that it comprises a rotating means for reciprocating left and right.
The venturi tube may include a cooling water moving path through which the cooling water moves, and the cooling water moving path may include an inlet part through which the coolant is introduced and an outlet part which is narrowed and then widened again in the inlet part.
The venturi tube may have an air inlet hole through which external air is introduced, and the air inlet hole may communicate with an outlet of the coolant movement path.
The venturi tube is an inner tube formed with the cooling water movement path and the air inlet hole; And coupled to the inner tube to surround the inner tube from the outside, it may include an appearance that is fastened to the rotating means.
The inner tube may include a fastening part inserted and fastened to a side into which the coolant is introduced, and the fastening part may have the inlet part.
The inlet portion formed in the fastening portion may have a narrower inner diameter than the outlet portion, and may include a transmission portion for spraying coolant to the outlet portion.
The exterior is formed with a hole through which the outside air is introduced, the air introduced through the hole may be transmitted to the cooling water movement path through the air inlet hole.
The venturi tube may be disposed at the front end of the rotating means based on the movement direction of the cooling water.
The venturi tube may be disposed at the rear end of the rotating means based on the movement direction of the cooling water.
The rotating means may include a housing having inlets and outlets formed at both sides such that cooling water is introduced into and discharged from the outside; Separating diaphragm through which the first and second flow holes having a flow path in different directions so as to pass through the cooling water flows through the inlet is formed in the housing and opposite flow direction components are formed; A rotation aberration rotatably mounted in the housing to reciprocally rotate in both directions by cooling water flow in different directions formed as cooling water passes through the first or second flow holes; A rotation opening / closing unit which reciprocates in both directions in association with the reciprocating rotation of the rotational aberration and alternately opens and closes the first and second flow holes; And it may include a link unit for interlocking the rotation aberration and the rotation opening and closing unit.
The separating diaphragm is fixedly mounted in the transverse direction inside the housing in a flat plate shape, the first and second flow holes are each formed at least one or more so as to have a straight flow path formed inclined with respect to the thickness direction of the separating diaphragm, The inclined directions of the first and second flow holes may be formed to be symmetrical with respect to the thickness direction of the separating diaphragm.
The rotation opening and closing unit, the rotation block portion is coupled to the link unit to rotate; And an opening / closing clutch unit engaged with the separation diaphragm so as to be engaged with the rotary block part and rotate and alternately open and close the first and second flow holes.
The rotation means is disposed on the outside of the housing and in communication with the inner space through the discharge port comprises a spraying unit for injecting the coolant discharged from the housing, the spraying unit is coupled to the rotation opening and closing unit to rotate the It rotates with the switchgear unit and can spray coolant.
According to the above-described efficiency improving apparatus of the solar power plant according to the present invention, the outside air is injected with the coolant using a venturi tube to improve the cooling and cleaning performance of the solar module through two phase flow. Can reduce the amount of cooling water used.
In addition, the cooling water injection means can be reciprocated by a mechanical mechanism using the flow of cooling water without a separate electric power can reduce the operating cost.
1 is a view schematically showing a configuration of an efficiency improving apparatus of a solar power plant according to an embodiment of the present invention.
2 is a perspective view showing the coolant spray means according to an embodiment of the present invention.
3 is a cross-sectional view showing the coolant injection means according to an embodiment of the present invention.
4 is a perspective view showing a venturi tube according to an embodiment of the present invention.
5 is an exploded view showing a venturi tube according to an embodiment of the present invention.
6 is a cross-sectional view showing a venturi tube according to an embodiment of the present invention.
7 is a view for explaining the principle that the outside air flows through the venturi tube.
8 is a perspective view showing a rotating means according to an embodiment of the present invention.
9 is an exploded perspective view showing the configuration of a rotating means according to an embodiment of the present invention.
10 is a cross-sectional view showing the internal structure of the rotating means according to an embodiment of the present invention.
11 is a perspective view showing a connection relationship between the internal components of the rotating means according to an embodiment of the present invention.
12 and 13 are perspective views illustrating a rotation operation structure of the rotation aberration according to the embodiment of the present invention.
FIG. 14 is a bottom view illustrating an opening and closing state of first and second flow holes according to an exemplary embodiment of the present invention. FIG.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the terminology used herein is for the purpose of description and should not be interpreted as limiting the scope of the present invention.
The embodiments described in the present specification and the configurations shown in the drawings are preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention and thus various equivalents and modifications Can be.
1 is a view schematically showing a configuration of an efficiency improving apparatus of a solar power plant according to an embodiment of the present invention.
Referring to FIG. 1,
The
However, since the
The present invention relates to an efficiency improving apparatus capable of maintaining and improving the efficiency of photovoltaic power generation by cooling and washing the
As shown in FIG. 1, the efficiency improving apparatus of the solar power plant according to an embodiment of the present invention includes a storage tank 1, a coolant spray means 6, a
Cooling water injection means (6) is installed to correspond to each of the solar modules (7) is a means for injecting the coolant to spray the coolant to the solar module (7). When cooling water is poured into the
The impingement jet has excellent heat and mass transfer effects from the coolant to the impingement surface, thereby improving the cooling and cleaning effect and reducing the generation of scale. However, in order to generate a collision jet, the speed of the coolant is 30 m / s or more and the pressure is 1.6 kg / cm 2 or more, based on the inlet of the coolant spray means 6 for injecting the coolant into the
The cooling
The
The
The manner in which the
As a first example, this is a time-based control scheme. Specifically, the
Another example is the temperature control method. Specifically, it is determined whether the measured temperature difference between the temperature of the
Whatever control method is selected, it is preferable to measure the pressure in the cooling
In addition, in consideration of the amount of cooling water stored in the storage tank 1 and the supply speed of the cooling water supplied to the storage tank 1, it is preferable to control the injection amount of the cooling water so that the cooling water is properly distributed during the driving time. In this case, the injection amount of the cooling water may be controlled to be sprayed at the same speed every hour, or may be controlled to be sprayed at different time intervals.
In addition, if it is determined that the rain sensor 43 is on or off and is raining, the operation is terminated, and it is determined whether the temperature of the
The cooling water injection means 6 according to the present invention includes a venturi tube for generating negative pressure therein and introducing external air, and rotating means for reciprocating left and right by flow of cooling water.
The Venturi tube uses the Venturi effect to introduce external air into the cooling water to increase the injection pressure of the cooling water and generate two phase flow. The impingement flow, that is, the impingement jet using the mixed coolant of air and water has much better heat transfer and momentum transfer effects than the impingement jet using only the coolant, thereby improving the cooling and washing efficiency and reducing the amount of cooling water used.
In addition, the rotating means can reciprocally rotate the coolant jetting means 6 through a mechanical mechanism using a flow of coolant without additional power to cool and wash the front surface of the
Hereinafter, the cooling water injection means 6 according to an embodiment of the present invention will be described in more detail with reference to FIGS. 2 to 14. 2 and 3 are a perspective view and a cross-sectional view showing a cooling water injection means according to an embodiment of the present invention, Figures 4 to 6 are a perspective view, an exploded view and a cross-sectional view showing a
Cooling water injection means 6 according to an embodiment of the present invention includes a
The
The cooling water moving path is a path through which the cooling water received from the cooling
The cooling water moving path is composed of an
In order to more easily form the
The
In the exterior 60, a
A
In addition, a thread is formed on the lower outer side of the
Referring to Figure 7 describes the process of the abnormal flow occurs in the
The coolant delivered from the
At this time, the cooling water sprayed to the
As a result, the outside air is introduced through the
The rotating means 40 discharges the cooling water (ideal flow) supplied from the
As shown in FIG. 8, a
Rotating means 40 according to an embodiment of the present invention is a component for enabling the
The
The separating
The
The rotation opening /
On the other hand, the
According to this structure, the rotating
Next, the mechanism in which the
As described above, the separating
On the other hand, the rotation opening and
Looking at the configuration of the rotation opening and
At this time, the
In addition, the opening and closing
Accordingly, the rotation opening /
When the operation state of the rotation opening and
At this time, the locking
On the other hand, the rotation opening and
Next, looking at the
The
On the other hand, the
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.
Claims (13)
Storage tank to store coolant:
Coolant injection means for injecting coolant into the solar module; And
A pump for pumping the coolant stored in the storage tank to supply the coolant injection means through a coolant supply pipe;
The cooling water injection means, Venturi tube for generating a negative pressure inside to introduce the outside air: and the efficiency improvement equipment of the solar power plant, characterized in that it comprises a rotation means for rotating the left and right by the flow of the cooling water.
The venturi tube includes a cooling water moving path to move the cooling water,
The cooling water moving path is an efficiency improving equipment of the solar power plant, characterized in that the cooling water flows inlet and the inlet portion is narrowed inside diameter of the inlet portion is widened again.
The venturi tube is formed with an air inlet hole through which the outside air is introduced,
The air inlet hole is in communication with the outlet of the cooling water movement path efficiency improvement equipment of the solar power plant.
The venturi tube is an inner tube formed with the cooling water movement path and the air inlet hole; And
Combined with the inner tube to wrap the inner tube from the outside, the efficiency improvement equipment of the solar power plant, characterized in that it comprises an external fastening means.
The inner tube includes a fastening portion inserted into a side into which the coolant is introduced,
The fastening portion is the efficiency of the solar power plant, characterized in that the inlet is formed.
Inlet portion formed in the fastening portion, the inner diameter is narrower than the outlet portion is formed efficiency improvement equipment of the solar power generation equipment, characterized in that it comprises a transmission unit for spraying the coolant to the outlet.
The exterior is formed with a hole through which outside air is introduced,
The air introduced through the hole is the efficiency improvement equipment of the solar power generation facility, characterized in that it is transferred to the cooling water movement path through the air inlet.
The venturi tube is the efficiency improvement equipment of the photovoltaic power generation facility, characterized in that disposed in the front end of the rotating means based on the movement direction of the cooling water.
The venturi tube is disposed on the rear end of the rotating means based on the movement direction of the cooling water efficiency improvement equipment of the solar power plant.
Wherein,
A housing having inlets and outlets formed at both sides thereof to allow the coolant to flow in and out from the outside;
Separating diaphragm through which the first and second flow holes having a flow path in different directions so as to pass through the cooling water flows through the inlet is formed in the housing and opposite flow direction components are formed;
A rotation aberration rotatably mounted in the housing to reciprocally rotate in both directions by cooling water flow in different directions formed as cooling water passes through the first or second flow holes;
A rotation opening / closing unit which reciprocates in both directions in association with the reciprocating rotation of the rotational aberration and alternately opens and closes the first and second flow holes; And
Link unit for interlocking the rotation aberration and rotation opening and closing unit
Efficiency improvement equipment of photovoltaic power generation equipment comprising a.
The separating diaphragm is fixedly mounted in the transverse direction inside the housing in a flat plate shape, the first and second flow holes are each formed at least one or more so as to have a straight flow path formed inclined with respect to the thickness direction of the separating diaphragm, The inclination direction of the first and second flow holes are formed symmetrically to each other with respect to the thickness direction of the separation diaphragm efficiency improvement equipment.
The rotation opening and closing unit,
A rotating block unit connected to the link unit and rotating; And
And an opening and closing clutch part engaged with the separating block to be engaged with the rotary block part and contacted with the separation plate so as to alternately open and close the first and second flow holes.
The rotating means is disposed on the outside of the housing and in communication with the inner space of the housing through the discharge port comprises a spray unit for injecting the coolant discharged from the housing,
The injection unit is coupled to the rotation opening and closing unit to improve the efficiency of the photovoltaic power generation equipment, characterized in that rotating with the rotation opening and closing unit and spraying the cooling water.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110077673A KR101282739B1 (en) | 2011-08-04 | 2011-08-04 | Efficiency enhancement equipment for solar photovoltaic power facilities |
PCT/KR2012/005708 WO2013019005A2 (en) | 2011-08-04 | 2012-07-17 | Efficiency enhancing system for a photovoltaic power generating facility using a two phase flow |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020110077673A KR101282739B1 (en) | 2011-08-04 | 2011-08-04 | Efficiency enhancement equipment for solar photovoltaic power facilities |
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Publication Number | Publication Date |
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KR20130015599A true KR20130015599A (en) | 2013-02-14 |
KR101282739B1 KR101282739B1 (en) | 2013-07-05 |
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KR1020110077673A KR101282739B1 (en) | 2011-08-04 | 2011-08-04 | Efficiency enhancement equipment for solar photovoltaic power facilities |
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CN104253574A (en) * | 2013-06-26 | 2014-12-31 | 中国科学院上海高等研究院 | Solar distributed power generation system |
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KR20040101948A (en) * | 2004-05-31 | 2004-12-03 | (주)케이.씨.텍 | Nozzle for Injecting Sublimable Solid Particles Entrained in Gas for Cleaning Surface |
KR100914965B1 (en) * | 2009-05-27 | 2009-09-02 | (주)하이레벤 | Washing apparatus for solar photovoltaic power facilities |
JP5479851B2 (en) | 2009-11-04 | 2014-04-23 | トヨタホーム株式会社 | Solar panel cooling system |
KR100986706B1 (en) * | 2010-03-16 | 2010-10-08 | (주)하이레벤 | Efficiency enhancement equipment for solar photovoltaic power facilities |
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