CN107843337A - A kind of Salar light-gathering hot spot relative intensity distribution measuring system - Google Patents
A kind of Salar light-gathering hot spot relative intensity distribution measuring system Download PDFInfo
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- CN107843337A CN107843337A CN201711385201.8A CN201711385201A CN107843337A CN 107843337 A CN107843337 A CN 107843337A CN 201711385201 A CN201711385201 A CN 201711385201A CN 107843337 A CN107843337 A CN 107843337A
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- cooling water
- front panel
- metal foam
- renderer
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- 238000005259 measurement Methods 0.000 claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 87
- 239000006262 metallic foam Substances 0.000 claims description 68
- 239000000463 material Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 230000002045 lasting effect Effects 0.000 claims description 3
- 230000003134 recirculating effect Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000013082 photovoltaic technology Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J2001/4266—Photometry, e.g. photographic exposure meter using electric radiation detectors for measuring solar light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J2001/4266—Photometry, e.g. photographic exposure meter using electric radiation detectors for measuring solar light
- G01J2001/4285—Pyranometer, i.e. integrating over space
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
A kind of Salar light-gathering hot spot relative intensity distribution measuring system of the present invention belongs to the performance measurement field of solar utilization technique.The measuring system of the present invention is made up of hot spot renderer, water-cooling system, facula measurement device and additional device.Hot spot renderer is placed in the focal beam spot position of solar concentrating system, is showed hot spot relative intensity distribution in a manner of irreflexive；Water-cooling system is used to keep hot spot renderer to run at a lower temperature；Facula measurement device is made up of CCD imagers and computer etc., for measuring the hot spot relative intensity distribution in hot spot renderer；Additional device is used for the work for aiding in hot spot renderer and facula measurement device.The measuring system of the present invention can accurately measure the relative intensity distribution situation of Salar light-gathering hot spot, have very high measurement accuracy, and useful data can be provided for the performance boost of solar concentrating system and are supported.
Description
Technical field
The present invention relates to the performance measurement field of solar utilization technique, specially a kind of Salar light-gathering hot spot is with respect to light
Strong distribution measurement system.
Background technology
With technological progress and the stimulation of domestic and international encouragement policy, field of solar energy utilization shows explosion type increasing in recent years
Long trend.An important branch in field is utilized as solar energy, solar concentrating photovoltaic technology is also in fast development.Instead
Penetrate formula condensation photovoltaic technology, have collection area big, the features such as optically focused light intensity is high, and optically focused uniformity is good and it is very popular.
But for reflection concentration type photovoltaic technology, such as dish-style concentration photovoltaic system, because its collection area is big, gather
Light hot spot is also larger, and the optically focused intensity of focal beam spot is very strong, if condenser has design defect or Rig up error, holds very much
Easily just burn out receiver apparatus.In the erecting bed of dish-style concentration photovoltaic system, due to the shape and Theoretical Design of speculum
There is certain error in shape, installation site may also have certain error with Theoretical Design position, and this may result in actual
Hot spot relative intensity distribution and Theoretical Design are inconsistent.It is therefore desirable to accurately measure dish-style concentration photovoltaic system reality
Hot spot relative intensity distribution situation, judge whether the installation site of the condenser of concentration photovoltaic system is reasonable with this, if need
It is adjusted.Although the technology in terms of some facula measurements at present be present, existing facula measurement technology is being surveyed
It is difficult to meet actual measurement request in terms of accuracy of measurement.
The content of the invention
For problem above, a kind of Salar light-gathering hot spot relative intensity distribution measuring system of the invention can be surveyed accurately
Salar light-gathering hot spot relative intensity distribution situation is measured, there is high measurement accuracy, it is easy to operate, it is well suited for solar energy and gathers
The job site measurement of photosystem.
The present invention a kind of Salar light-gathering hot spot relative intensity distribution measuring system by hot spot renderer, water-cooling system,
Facula measurement device and additional device composition.
The hot spot renderer is fixed in the focal beam spot position of solar concentrating system by auxiliary stand, for inciting somebody to action
The relative intensity distribution of Salar light-gathering hot spot shows.The hot spot renderer is kept off by front panel, metal foam, side
Plate, rear board, cooling water inlet pipe, cooling water outlet pipe are formed, while have both luminous energy reception and hot spot presentation function.
The material of the front panel is metal, has good heat-conductive characteristic；Preferably, the material of front panel is metal
Copper.Specially treated is passed through on the surface of the front panel, has certain gray scale, has uniform diffuse reflection performance.The table of front panel
Face has certain gray scale, is only to reflect a part of luminous energy to absorb a part of incident optical energy（Control front panel surface
Reflectivity）, in order to avoid because intensity of reflected light is too high influence that effect is presented；The surface of front panel has uniform diffuse reflection performance,
It is in order to which hot spot relative intensity distribution situation is preferably presented.The front panel is cylinder, the radius R of cylinder for 50 ~
300mm, the high H of cylinder（That is the thickness of front panel）For 1 ~ 5mm.
The material of the metal foam is metal, has good heat-conductive characteristic；Preferably, the material of metal foam is
Metallic copper.The metal foam is also cylinder, and its radius is consistent with the radius size of front panel, the height of cylinder（That is metal
The thickness of foam）For 5 ~ 30mm.It is close to the bottom surface of front panel in the bottom surface of the metal foam.
The material of the rear board and side board is metal material, has good heat-conductive characteristic；Preferably, behind
The material of plate and side board is metallic copper.The rear board is also cylinder, and its radius is consistent with the radius size of front panel,
The height of cylinder（That is the thickness of rear board）For 1 ~ 5mm, the thickness of side board is also 1 ~ 5mm.It is close to gold in the bottom surface of rear board
Belong to the bottom surface of foam, side board is close to the side of metal foam so that metal foam forms the cylindrical space of closing, is easy to cold
But water passes through；The heat that front panel receives quickly is delivered to metal foam, and metal foam is cold with being flowed fast through in its space
But heat exchange action occurs for water, and metal foam transfers heat to cooling water, and is taken away heat rapidly by cooling water so that whole
Individual hot spot renderer keeps at a lower temperature, preventing hot spot renderer deformation or damage because of high temperature.
As a further improvement on the present invention, the material of the front panel is metal, has good heat-conductive characteristic；It is excellent
Choosing, the material of front panel is metallic copper.Specially treated is passed through on the surface of the front panel, has certain gray scale, has equal
Even diffusing reflection performance.Front panel surface has certain gray scale, is only to reflect a part to absorb a part of incident optical energy
Luminous energy（Control the reflectivity of front panel surface）, in order to avoid because intensity of reflected light is too high influence that effect is presented；The table of front panel
Face has uniform diffuse reflection performance, is in order to which hot spot relative intensity distribution situation is preferably presented.The front panel is cuboid,
The long L of cuboid is 100 ~ 500mm, and the wide W of cuboid is 100 ~ 500mm, the high H of cuboid（The as thickness of front panel）For
1~5mm。
Further, the material of the metal foam is metal, has good heat-conductive characteristic；Preferably, metal foam
Material be metallic copper.The metal foam is also cuboid, and the size of its length and width is consistent with the size of front panel length and width, long
The height of cube（That is the thickness of metal foam）For 5 ~ 30mm.It is close to the bottom surface of front panel in the bottom surface of the metal foam.
Further, the material of the rear board and side board is metal material, has good heat-conductive characteristic；It is preferred that
, the material of rear board and side board is metallic copper.The rear board is also cuboid, the size and front panel of its length and width
The size of length and width is consistent, the height of cuboid（That is the thickness of rear board）For 1 ~ 5mm, the thickness of side board is also 1 ~ 5mm.Afterwards
The bottom surface of metal foam is close in the bottom surface of panel, and side board is close to the side of metal foam so that metal foam forms closing
Rectangular parallelepiped space, it is easy to cooling water to pass through；The heat that front panel receives quickly is delivered to metal foam, and metal foam is empty with it
Heat exchange action occurs for the cooling water that is flowed fast through in gap, and metal foam transfers heat to cooling water, and by cooling water by heat
Amount is taken away rapidly so that whole hot spot renderer holding at a lower temperature, prevent hot spot renderer because of high temperature deformation or damage
It is bad.
The cooling water inlet pipe is connected with metal foam space by rear board, is easy to cold positioned at one end of rear board
But water enters metal foam.The number of cooling water inlet pipe is 1 ~ 10, is in order that obtaining cooling water more uniform flows gold
Belong to foam so that the surface temperature of front panel is more uniform.
The cooling water outlet pipe is located at the other end of rear board, is connected, is easy to metal foam space by rear board
Cooling water flows out after metal foam with heat.The number of cooling water outlet pipe is consistent with cooling water inlet pipe number, is
In order that obtaining cooling water more uniform flows metal foam so that the surface temperature of front panel is more uniform.
The cooling water system is to control the temperature of hot spot renderer so that it runs at a lower temperature, prevents
Deform upon or damage because temperature is too high.Cooling water system is made up of components such as water cooling unit, cooling water pipe, flowmeter, valves.
Water cooling unit provides lasting cooling water, and cooling water enters hot spot renderer through cooling water inlet pipe again by cooling water pipe, with light
Spot renderer occurs after heat exchange action absorbs hot spot renderer heat, then through cooling water outlet pipe and cooling water pipe returns to water cooling
Machine, re-enter hot spot renderer, goes round and begins again to form recirculating cooling water system after cooling.
The facula measurement device is made up of annexes such as CCD imagers and computers, and CCD imagers are fixed on survey by auxiliary stand
Position is measured, for measuring the hot spot relative intensity distribution in hot spot renderer, and picture and data transfer will be measured to computer,
Handled and stored by computer for analysis, so as to draw the precise information of optically focused hot spot relative intensity distribution.The measurement of CCD imagers
Position is located at the front panel side of hot spot renderer, and the distance away from hot spot renderer front panel surface is 0.5 ~ 10m.
By above technical scheme and equipment, with regard to Salar light-gathering hot spot relative intensity distribution situation can be accurately measured.
Compared with prior art, a kind of Salar light-gathering hot spot relative intensity distribution measuring system of the invention has following
Advantage and beneficial effect：
（1）Specially treated is passed through on the surface of the hot spot renderer front panel of the present invention, has certain gray scale, can be good at controlling
The surface reflectivity of hot spot renderer processed, prevent from damaging CCD imagers or influence because the light intensity of high power concentrator hot spot is too strong
Its measurement effect.
（2）Specially treated is passed through on the surface of the hot spot renderer front panel of the present invention, has uniform diffuse reflection performance, can
Accurately present glossing up relative intensity distribution situation, and allow facula measurement device measurement position in a wider context
Movement is without influenceing measurement effect.
（3）The material of the hot spot renderer of the present invention is all metal material, has fine heat-conductive characteristic, internal metal
The contact area of foam and cooling water is very big, and its rate of heat exchange is very high, by cooling water system, can be good at controlling light
The operating temperature of spot renderer.Even if the focal beam spot position of solar concentrating system has very high light energy, cooling water system
System also can timely take away heat so that hot spot renderer is constantly under lower temperature and worked, and prevents hot spot renderer because of height
Temperature and deform upon and then influence measurement result, prevent hot spot renderer from being damaged because of excessive temperature.
（4）Whole light can be also shot down while the hot spot relative intensity distribution that the CCD imager measurements of the present invention obtain
Spot renderer, using the size of hot spot renderer as reference, the shape and size of glossing up can accurately be described, and hot spot is relative
Light distribution coordinatograph.
（5）The present invention is showed hot spot relative intensity distribution by hot spot renderer, then is surveyed by CCD imagers
Amount, has played shooting and the measurement accuracy of CCD imagers, and can prevents from damaging CCD imagers because light intensity is too strong well.
（6）A kind of Salar light-gathering hot spot relative intensity distribution measuring system of the present invention can be applied to different caustic surfaces
The measurement of the hot spot relative intensity distribution of long-pending solar concentrating system.
Brief description of the drawings
Fig. 1 hot spot renderers front panel, rear board schematic diagram.
Fig. 2 hot spot renderers vertical tangent plane, cross-sectional.
Fig. 3 Salar light-gathering hot spot relative intensity distribution measuring system schematic diagrames.
Salar light-gathering hot spot relative intensity distribution measurement figure in Fig. 4 embodiments.
Embodiment
In order to which more clearly explanation is of the invention, below in conjunction with drawings and Examples, the present invention will be described in detail.
It should be appreciated that the following examples are in order to which more clearly explanation is of the invention, present disclosure is not limited.
A kind of Salar light-gathering hot spot relative intensity distribution measuring system of the present embodiment is by hot spot renderer, water cooling system
System, facula measurement device and additional device composition.
The hot spot renderer of the present embodiment is fixed in the effective focal spot position of condenser system by auxiliary stand, for inciting somebody to action
The relative intensity distribution of Salar light-gathering hot spot shows.The hot spot renderer is kept off by front panel, metal foam, side
Plate, rear board, cooling water inlet pipe, cooling water outlet pipe are formed, while have both luminous energy reception and hot spot presentation function.Hot spot is in
Structural reference Fig. 1, Fig. 2 of existing device.
The material of the front panel of the present embodiment is metallic copper, has good heat-conductive characteristic.The surface of front panel is passed through
Specially treated, there is certain gray scale, there is uniform diffuse reflection performance.The surface of front panel has certain gray scale, be in order to
Absorb a part of incident optical energy and only reflect a part of luminous energy（Control the reflectivity of front panel surface）, in order to avoid because of reflective light intensity
Du Taigao and influence present effect；The surface of front panel has uniform diffuse reflection performance, is relative in order to which hot spot is preferably presented
Light distribution situation.The front panel is cylinder, and the radius R of cylinder is 150mm, the high H of cylinder（That is the thickness of front panel
Degree）For 1mm.
The material of the metal foam of the present embodiment is metallic copper, has good heat-conductive characteristic.Metal foam is also circle
Cylinder, it is 150mm that its radius is consistent with the radius size of front panel, the height of cylinder（That is the thickness of metal foam）For 10mm.
It is close to the bottom surface of front panel in the bottom surface of metal foam.
The rear board of the present embodiment and the material of side board are metallic copper, have good heat-conductive characteristic.Rear board
Also it is cylinder, it is 150mm that its radius is consistent with the radius size of front panel, the height of cylinder（That is the thickness of rear board）For
1mm, the thickness of side board is also 1mm.The bottom surface of metal foam is close in the bottom surface of rear board, and side board is close to metal foam
Side so that metal foam formed closing cylindrical space, be easy to cooling water to pass through；The heat that front panel receives is quick
It is delivered to metal foam, heat exchange action occurs with the cooling water flowed fast through in its space for metal foam, and metal foam is by warm
Amount passes to cooling water, and is taken away heat rapidly by cooling water so that whole hot spot renderer keeps at a lower temperature, preventing
Only hot spot renderer deformation or damage because of high temperature.
The cooling water inlet pipe of the present embodiment is located at one end of rear board, is connected by rear board with metal foam space,
It is easy to cooling water to enter metal foam.The number of cooling water inlet pipe is 3, is more uniform flowed in order that obtaining cooling water
Metal foam so that the surface temperature of front panel is more uniform.
The cooling water outlet pipe of the present embodiment is located at the other end of rear board, is connected by rear board and metal foam space
It is logical, it is easy to cooling water to be flowed out after metal foam with heat.The number of cooling water outlet pipe and cooling water inlet pipe number
Unanimously, also it is 3, is in order that obtaining cooling water more uniform flows metal foam so that the surface temperature of front panel is more
Uniformly.
The cooling water system of the present embodiment is to control the temperature of hot spot renderer so that it is transported at a lower temperature
OK, prevent from deforming upon or damaging because temperature is too high.Cooling water system is by groups such as water cooling unit, cooling water pipe, flowmeter, valves
Part forms.Water cooling unit provides lasting cooling water, and cooling water is presented through cooling water inlet pipe into hot spot again by cooling water pipe
Device, after heat exchange action absorption hot spot renderer heat occurs with hot spot renderer, then through cooling water outlet pipe and cooling water pipe
Water cooling unit is returned to, re-enter hot spot renderer, goes round and begins again to form recirculating cooling water system after cooling.
The facula measurement device of the present embodiment is made up of annexes such as CCD imagers and computers, and CCD imagers are consolidated by auxiliary stand
Measurement position is scheduled on, is arrived for measuring the hot spot relative intensity distribution in hot spot renderer, and by measurement picture and data transfer
On computer, handled and stored by computer for analysis, so as to draw the precise information of optically focused hot spot relative intensity distribution.Accompanying drawing 3 is
Hot spot relative intensity distribution measuring system structural representation.
In the present embodiment, it is as follows to the hot spot performance measurement process of dish-style concentration photovoltaic system：
（1）The condenser of dish-style concentration photovoltaic system is gone into backlight position, to prevent the people that burnt during rigging up and debugging
Member and equipment, complete the installation preparation of optically focused hot spot relative intensity distribution measuring system.In the present embodiment, dish-style optically focused
Effective collection area of the condenser of photovoltaic system is 3.4*3.4m2, effective focal length（I.e. condenser center position to focus on light
The position of spot central point）For 2m.
（2）Hot spot renderer is placed in the focal beam spot position of dish-style concentration photovoltaic system to be measured by auxiliary stand, and adjusted
Whole hot spot renderer so that the rotation axes of symmetry of dish-style condenser is vertical with the front panel of hot spot renderer, and crosses hot spot and present
The center of device front panel, and ensure concentration photovoltaic system in operation process hot spot renderer relative to the relative of condenser
Position is fixed.
（3）Cooling water pipe is connected respectively on the cooling water inlet pipe and cooling water outlet pipe of hot spot renderer, opened
Water cooling unit, open valve so that cooling water system is in normal operating conditions.In the present embodiment, hot spot renderer is flowed through
The flow of cooling water is 10L/min, can ensure that the temperature on hot spot renderer surface in normal operation is less than 200oC。
（4）CCD imagers are fixed on measurement position by auxiliary stand, with reference to figure 3, the measurement position position of CCD imagers
In the front panel side of hot spot renderer, and the rotational symmetry of the rotation axes of symmetry of the camera lens of CCD imagers and dish-style condenser
Overlapping of axles, the distance away from hot spot renderer are 1.5m, and ensure concentration photovoltaic system in operation process CCD imagers relative to
The relative position of hot spot renderer is fixed, and opens CCD imagers.
（5）Open the tracking system day by day of dish-style concentration photovoltaic system so that the condenser of dish-style concentration photovoltaic system is just
To the sun, and optically focused hot spot is formed in hot spot renderer.Pass through computer program, the optically focused light of measurement dish-style concentration photovoltaic system
Spot light intensity Relative distribution situation, analyze and store optically focused hot spot relative intensity distribution measurement data.
（6）After completing the measurement of hot spot relative intensity distribution, the condenser of dish-style concentration photovoltaic system is gone into backlight position,
The lower CCD imagers of dismounting, close cooling water system, dismantle lower hot spot renderer, and measuring apparatus is cased, and complete whole measurement
Work.
By above technical scheme and operating procedure, with regard to the dish-style concentration photovoltaic system in the present embodiment can be accurately measured
Optically focused hot spot relative intensity distribution situation, measurement result is as shown in Figure 4.
Measurement result is analyzed with reference to accompanying drawing 4, the optically focused hot spot of dish-style concentration photovoltaic system can accurately be depicted
Shape, size and relative intensity distribution.In the present embodiment, the radius of hot spot renderer is 150mm, corresponding CCD imagers
Imaging size be 65 μm, i.e., the ratio of actual size and imaging size be 2300:1.In figure 4, it is observed that dish-style
The optically focused hot spot of concentration photovoltaic system is broadly square, and the square length of side in measurement data is 46 μm, it is contemplated that actual
The ratio of size and imaging size, the actual length of side of square optically focused hot spot is 105mm, but the shape of hot spot is not unconventional
Square then.Reference axis is established as the origin of coordinates using the center of square hot spot, can be by the diverse location on hot spot
Coordinatograph.In figure 4, it is observed that having the obvious higher region of 4 relative light intensities, this 4 phases on square hot spot
The center position coordinates in higher region obvious to light intensity are respectively：A（- 5,25）, B（- 41,25）, C（- 35,30）, D（- 46,
44）.In dish-style concentration photovoltaic system normal course of operation, these relative light intensities are easy to light occur at obvious higher region
Lie prostrate the situation of cell piece damage.Therefore, the condenser of the dish-style concentration photovoltaic system in the present embodiment needs further adjustment, with
So that the relative intensity distribution of optically focused hot spot is more uniform, so as to prevent damaging receiver because subregion relative light intensity is too high
Photovoltaic cell, and then lifted dish-style concentration photovoltaic system conversion efficiency.
Above measurement data and analysis result, Salar light-gathering can accurately be measured by illustrating the measuring system of the present invention
The relative intensity distribution situation of hot spot, useful data support is provided for the performance boost of solar concentrating system.
Claims (8)
- A kind of 1. Salar light-gathering hot spot relative intensity distribution measuring system, it is characterised in that：Salar light-gathering hot spot is with respect to light Strong distribution measurement system is made up of hot spot renderer, water-cooling system, facula measurement device and additional device.
- A kind of 2. Salar light-gathering hot spot relative intensity distribution measuring system according to claim 1, it is characterised in that：Institute The focal beam spot position that hot spot renderer is fixed in solar concentrating system by auxiliary stand is stated, for by Salar light-gathering The relative intensity distribution of hot spot shows；The hot spot renderer is by front panel, metal foam, side board, rear board, cold But water inlet pipe, cooling water outlet pipe are formed, while have both the function that luminous energy is received and hot spot is presented.
- A kind of 3. Salar light-gathering hot spot relative intensity distribution measuring system according to claim 2, it is characterised in that：Institute It is metal material panel to state front panel, has good heat-conductive characteristic；Specially treated is passed through on the surface of the front panel, has Certain gray scale, there is uniform diffuse reflection performance；The front panel is cylinder, and the radius R of cylinder is 50 ~ 300mm, cylinder The high H of body（That is the thickness of front panel）For 1 ~ 5mm；The material of the metal foam is metal, has good heat-conductive characteristic；The metal foam is also cylinder, and it half Footpath is consistent with the radius size of front panel, the height of cylinder（That is the thickness of metal foam）For 5 ~ 30mm；The metal foam It is close to the bottom surface of front panel in bottom surface；The material of the rear board and side board is metal material, has good heat-conductive characteristic；The rear board is also Cylinder, its radius is consistent with the radius size of front panel, the height of cylinder（That is the thickness of rear board）For 1 ~ 5mm, side gear The thickness of plate is also 1 ~ 5mm；The bottom surface of metal foam is close in the bottom surface of rear board, and side board is close to the side of metal foam, So that metal foam forms the cylindrical space of closing, it is easy to cooling water by the way that the heat that front panel receives quickly is delivered to gold Belong to foam, with the cooling water flowed fast through in its space heat exchange action occurs for metal foam, and metal foam transfers heat to Cooling water, and taken away heat rapidly by cooling water so that whole hot spot renderer keeps at a lower temperature, preventing that hot spot is in Existing device deformation or damage because of high temperature.
- A kind of 4. Salar light-gathering hot spot relative intensity distribution measuring system according to claim 2, it is characterised in that：Institute It is metal material panel to state front panel, has good heat-conductive characteristic；Specially treated is passed through on the surface of the front panel, has Certain gray scale, there is uniform diffuse reflection performance；The front panel is cuboid, and the long L of cuboid is 100 ~ 500mm, rectangular The wide W of body is 100 ~ 500mm, the high H of cuboid（The as thickness of front panel）For 1 ~ 5mm；The material of the metal foam is metal, has good heat-conductive characteristic；The metal foam is also cuboid, its The size of length and width is consistent with the size of front panel length and width, the height of cuboid（That is the thickness of metal foam）For 5 ~ 30mm；It is described It is close to the bottom surface of front panel in the bottom surface of metal foam；The material of the rear board and side board is metal material, has good heat-conductive characteristic；The rear board is also Cuboid, the size of its length and width is consistent with the size of front panel length and width, the height of cuboid（That is the thickness of rear board）For 1 ~ 5mm, the thickness of side board is also 1 ~ 5mm；The bottom surface of metal foam is close in the bottom surface of rear board, and side board is close to metal foam The side of foam so that metal foam forms the rectangular parallelepiped space of closing, is easy to cooling water by the way that the heat that front panel receives is quick It is delivered to metal foam, heat exchange action occurs with the cooling water flowed fast through in its space for metal foam, and metal foam is by warm Amount passes to cooling water, and is taken away heat rapidly by cooling water so that whole hot spot renderer keeps at a lower temperature, preventing Only hot spot renderer deformation or damage because of high temperature.
- A kind of 5. Salar light-gathering hot spot relative intensity distribution measuring system according to claim 2, it is characterised in that：Institute Cooling water inlet pipe is stated positioned at one end of rear board, is connected by rear board with metal foam space, is easy to cooling water to enter gold Belong to foam；The number of cooling water inlet pipe is 1 ~ 10, is in order that obtaining cooling water more uniform flows metal foam so that The surface temperature of front panel is more uniform；The cooling water outlet pipe is located at the other end of rear board, is connected by rear board with metal foam space, is easy to cool down Water flows out after metal foam with heat；The number of cooling water outlet pipe is consistent with cooling water inlet pipe number, be in order to So that cooling water more uniform flows metal foam so that the surface temperature of front panel is more uniform.
- A kind of 6. Salar light-gathering hot spot relative intensity distribution measuring system according to claim 1, it is characterised in that：Institute Stating cooling water system is to control the temperature of hot spot renderer so that it runs at a lower temperature, prevents because temperature is too high And deform upon or damage；Cooling water system is made up of components such as water cooling unit, cooling water pipe, flowmeter, valves；Water cooling unit provides Lasting cooling water, cooling water enter hot spot renderer through cooling water inlet pipe again by cooling water pipe, are sent out with hot spot renderer After heat exchange interaction absorbs hot spot renderer heat, then through cooling water outlet pipe and cooling water pipe water cooling unit is returned to, after cooling Re-enter hot spot renderer, goes round and begins again to form recirculating cooling water system.
- A kind of 7. Salar light-gathering hot spot relative intensity distribution measuring system according to claim 1, it is characterised in that：Institute State facula measurement device to be made up of annexes such as CCD imagers and computers, CCD imagers are fixed on measurement position by auxiliary stand, use Hot spot relative intensity distribution in measurement hot spot renderer, and picture and data transfer will be measured to computer, pass through computer Analyzing and processing and storage, so as to draw the precise information of optically focused hot spot relative intensity distribution.
- A kind of 8. Salar light-gathering hot spot relative intensity distribution measuring system according to claim 7, it is characterised in that： The measurement position of CCD imagers is located at the front panel side of hot spot renderer, the distance of the front panel surface away from hot spot renderer For 0.5 ~ 10m.
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