CN207751586U - A kind of light spot energy measuring system suitable for Salar light-gathering - Google Patents
A kind of light spot energy measuring system suitable for Salar light-gathering Download PDFInfo
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- CN207751586U CN207751586U CN201721428742.XU CN201721428742U CN207751586U CN 207751586 U CN207751586 U CN 207751586U CN 201721428742 U CN201721428742 U CN 201721428742U CN 207751586 U CN207751586 U CN 207751586U
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Abstract
This application involves a kind of light spot energy measuring system suitable for Salar light-gathering, which includes cavity type heat absorber, and the chamber of cavity type heat absorber is equipped with aperture, and the opening of aperture is equipped with reflective wind shield, and the reflectivity of reflective wind shield is more than or equal to 0.9.Cavity type heat absorber is barrel-shaped, and heat exchange pipeline is equipped between cavity type heat absorber inner cavity and outer wall, and aperture one end is equipped with cold working medium entrances, and the other end is exported equipped with hot working fluid, and cold working medium entrances are exported with hot working fluid to be connected by heat exchange pipeline.The cold working medium entrances are connect with first pipe, and are connected to sink;The hot working fluid outlet is connect with second pipe, and is connected to accumulator tank.Reflective wind shield is arranged in the system at cavity type heat absorber aperture, both the light for not entering chamber had been reflected away, the light that aperture is not entered chamber is avoided to burn out, the heat overflowed from aperture inner cavity is reduced again, the radiation loss between heat dump and air can also be reduced so that measurement result is more accurate.
Description
Technical field
The application belongs to solar energy utilization technique field, is related to light spot energy measurement, and in particular to one kind is suitable for too
The light spot energy measuring system of positive energy optically focused.
Background technology
Solar energy high temperature heat utilization is the big event of Solar use, wherein Dish solar thermal power system has become
For one of most important three kinds of solar energy thermal-power-generating modes.Cavity type heat absorber will be gathered in disc type solar energy moderate-high temperature heat utilization systems
The sunlight of collection is converted to the device of thermal energy, by can determine whether that the optically focused of solar-energy light collector is imitated to the measurement of its light spot energy
Rate.
In the prior art, it includes that spherical cavate is inhaled to have a kind of Optical spot measurement system suitable for Salar light-gathering, the system
Hot device, heat dump are equipped with opening, and the both ends of opening are connected to the cooling-water duct being arranged inside heat dump, cooling-water duct
Water inlet connect with sink by water inlet line;The water outlet of cooling-water duct is connect by recovery channel with accumulator tank.Into
It is equipped with temperature element on the pipeline of the mouth of a river and water outlet, the energy of glossing up is obtained by measuring cooling water outlet and inlet differential thermal calculation
Amount.
However, when hot spot edge light deviates, stray light can not enter heat dump inner cavity by opening, and
There is the hidden danger burnt out by stray light in cavity type heat absorber opening;In addition, cavity type heat absorber is influenced by natural wind in air,
It is easy that heat convection occurs with air, causes the radiation loss of heat dump to increase, to influence the standard of light spot energy measurement result
True property.
Utility model content
The application provides a kind of light spot energy measuring system suitable for Salar light-gathering, in the aperture of cavity type heat absorber
Reflective wind shield is arranged in place, had both reflected away the light for not entering chamber, and had avoided the light that aperture is not entered chamber from burning out, again
The heat that inner cavity is overflowed from aperture is reduced, the heat loss through convection for reducing air and heat dump loses.
In order to achieve the above object, the application provides the following technical solutions:
This application provides a kind of light spot energy measuring system suitable for Salar light-gathering, including cavity type heat absorber,
In,
The chamber of the cavity type heat absorber is equipped with aperture, and the opening of the aperture is equipped with reflective wind shield;
The reflective wind shield is the truncated cone-shaped thin plate of upper and lower opening, and the reflectivity of the reflective wind shield is more than or equal to
0.9;The reflective wind shield includes side to light and shady face, and the reflective wind shield is seamlessly connected with the aperture;
The cavity type heat absorber is barrel shaped structure, and heat exchange pipeline is equipped between the inner cavity and outer wall of the cavity type heat absorber;
Described aperture one end is equipped with cold working medium entrances, and the other end is exported equipped with hot working fluid, the cold working medium entrances and institute
Hot working fluid outlet is stated by heat exchange pipeline to be connected;
The cold working medium entrances are connect with first pipe, and are connected to sink;
The hot working fluid outlet is connect with second pipe, and is connected to accumulator tank;
The first pipe is equipped with the first thermometric pressure measuring unit, and the second pipe is filled equipped with the second thermometric pressure measurement
It sets.
Optionally, the angle of the reflective wind shield and the vertical central axis of the cavity type heat absorber be 45 to 80 degree between
Any value.
Optionally, the area of the aperture is less than or equal to the 1% of the chamber inner wall surface area of the cavity type heat absorber.
Optionally, first flow measuring device, regulating valve and water pump, the flow measurement are additionally provided in the first pipe
Device is arranged between the first thermometric pressure measuring unit and the water pump, and the regulating valve is arranged in the first flow measuring device
Between the water pump.
Optionally, the second pipe is equipped with second flow measuring device.
Optionally, the light side of meeting of the heat exchange pipeline is coated with coating for selective absorption, and the backlight side of the heat exchange pipeline is set
There are insulating layer and protective layer.
Optionally, the outer wall of the first pipe is equipped with the insulating layer and the protective layer.
Optionally, the pipeline outer wall between the second thermometric pressure measuring unit and hot working fluid outlet is equipped with the heat preservation
Layer and the protective layer.
Optionally, the side to light includes mirror surface.
Optionally, it is coated with infrared reflection coating on the shady face.
By above technical scheme, this application provides a kind of light spot energy measuring systems suitable for Salar light-gathering, should
System includes cavity type heat absorber, and reflective wind shield is arranged at the aperture of cavity type heat absorber, can both reflect away and not enter chamber
The light of room avoids the light that aperture is not entered chamber from burning out, and can reduce the heat that inner cavity is overflowed from aperture, also
Can reduce between cavity type heat absorber and air heat loss through convection loss, to improve light spot energy measuring system safety and
The accuracy of measurement result.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of light spot energy measuring system structural schematic diagram suitable for Salar light-gathering provided by the present application;
Fig. 2 is the structural schematic diagram of reflective wind shield provided by the embodiments of the present application.
Reference sign:1, cavity type heat absorber;2, aperture;3, reflective wind shield;4, side to light;5, shady face;6、
Heat exchange pipeline;7, cold working medium entrances;8, hot working fluid exports;9, first pipe;10, second pipe;11, sink;12, accumulator tank;
13, the first thermometric pressure measuring unit;14, the second thermometric pressure measuring unit;15, first flow measuring device;16, regulating valve;17, water
Pump;18, second flow measuring device;19, coating for selective absorption;20, insulating layer;21, protective layer.
Specific implementation mode
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, other drawings may also be obtained based on these drawings.
It is a kind of light spot energy measuring system structural representation suitable for Salar light-gathering provided by the present application referring to Fig. 1
Figure.
A kind of light spot energy measuring system suitable for Salar light-gathering, including cavity type heat absorber 1, wherein the cavate
The chamber of heat dump 1 is equipped with aperture 2, and the opening of the aperture 2 is equipped with reflective wind shield 3.
It is the structural schematic diagram of reflective wind shield provided by the embodiments of the present application referring to Fig. 2.
The reflective wind shield 3 is the truncated cone-shaped thin plate of upper and lower opening, and the reflectivity of the reflective wind shield 3 is more than or equal to
0.9;The reflective wind shield 3 includes side to light 4 and shady face 5, and the reflective wind shield 3 is seamlessly connected with the aperture 2.
Cavity type heat absorber 1 in the system is mainly used for absorbing light spot energy, converts light spot energy to thermal energy, and transmit
To heat-exchange working medium.The aperture 2 is for arranging that hot spot, the energy of surveyed hot spot enter the cavate by the aperture 2
Heat dump 1 is radiated on the inner cavity of the cavity type heat absorber 1, and the inner cavity of the cavity type heat absorber 1 is photo-absorption region.
The reflective wind shield 3 is arranged at the aperture 2, and there are two effects, first, reflection light;Second is that keeping out the wind.Institute
The light for not entering chamber can both be reflected away by stating reflective wind shield 3, and the light that the aperture 2 is not entered chamber is avoided to burn
It is bad, and the heat that inner cavity is overflowed from the aperture 2 can be reduced, the cavity type heat absorber 1 and outside air can also be reduced
Heat convection, to play gear wind action.Light enters 1 inner cavity of cavity type heat absorber, most of light by the aperture 2
Line is absorbed, and a small amount of luminous energy is launched in the form of reflected light in 1 inner cavity of cavity type heat absorber.The presence of reflective wind shield 3 improves
The safety of system and measurement accuracy.
The cavity type heat absorber 1 is barrel shaped structure, and heat exchange pipeline is equipped between the inner cavity and outer wall of the cavity type heat absorber 1
6;2 one end of the aperture be equipped with cold working medium entrances 7, the other end be equipped with hot working fluid export 8, the cold working medium entrances 7 with it is described
Hot working fluid outlet 8 is connected by heat exchange pipeline 6;The cold working medium entrances 7 are connect with first pipe 9, and are connected to the water
Slot 11;The hot working fluid outlet 8 is connect with second pipe 10, and is connected to the accumulator tank 12.
The cavity type heat absorber 1 is set as barrel shaped structure and is more advantageous in process to the arrangement of the heat exchange pipeline 6,
The region between the inner cavity and outer wall of the cavity type heat absorber 1 is arranged in the heat exchange pipeline 6.
The first pipe 9 is equipped with the first thermometric pressure measuring unit 13, and the second pipe 10 is surveyed equipped with the second thermometric
Pressure device 14.The first thermometric pressure measuring unit 13 is arranged in the first pipe 9 of the cold medium inlet, and described second surveys
Warm pressure measuring unit 14 is arranged on the second pipe 10 of the thermal medium outlet.
The first thermometric pressure measuring unit 13 is for measuring temperature and pressure of the device of working medium by the cold working medium entrances 7 when
Power, the second thermometric pressure measuring unit 14 are used to measure temperature and pressure of the device of working medium by hot working fluid outlet 8 when.In order to
Keep measurement result more accurate, the first thermometric pressure measuring unit 13 is positioned close to the first pipe 9 of the cold working medium entrances 7
Corner, the second thermometric pressure measuring unit 14 is positioned close to the corner of the second pipe 10 of hot working fluid outlet 8.
Optionally, the reflective wind shield 3 and the angle of 1 vertical central axis of the cavity type heat absorber are 45 to 80 degree
Between any value.The reflective wind shield 3 be upper and lower opening truncated cone-shaped thin plate, at the circumferential edges of the aperture 2 without
Seam connection.The reflective wind shield 3 is a certain included angle in expansion shape with the vertical central axis of the cavity type heat absorber 1.
Optionally, the area of the aperture 2 is less than or equal to the chamber inner wall surface area of the cavity type heat absorber 1
1%.The shape of the aperture 2 is identical as the light spot shape.
Optionally, first flow measuring device 15, regulating valve 16 and water pump 17 are additionally provided in the first pipe 9, it is described
First flow measuring device 15 is arranged between the first thermometric pressure measuring unit 13 and the water pump 17, and the setting of the regulating valve 16 exists
Between the first flow measuring device 15 and the water pump 17.
The first flow measuring device 15 is used to measure the flow of cooling water in the first pipe 9, the regulating valve
16 optional ball valves.Cooling water enters first pipe 9 through the water pump 17 in the sink 11, is adjusted by the regulating valve 16
After flow, the first flow measuring device 15 can be recorded and measured to the flow of cooling water, then be surveyed through described first
After 13 measuring temperature of warm pressure measuring unit and pressure, enter the heat exchange pipeline 6 by the cold working medium entrances 7.
Optionally, the second pipe 10 is equipped with second flow measuring device 18.Device of working medium absorbs heat in heat exchange pipeline 6
After amount, second pipe 10 is exited into from hot working fluid outlet 8, through 14 measuring temperature of the second thermometric pressure measuring unit and pressure
Power, after the second flow measuring device 18 measures and records flow, hot working fluid enters described return by the second pipe 10
Receive slot 12.
Optionally, the light side of meeting of the heat exchange pipeline 6 is coated with coating for selective absorption 19, the backlight of the heat exchange pipeline 6
Side is equipped with insulating layer 20 and protective layer 21.The coating for selective absorption 19 is for absorbing incident light light spot energy, because of heat dump
Temperature in optically focused focus is relatively high, and heat dump should select heat safe absorbing material in this region.20 He of the insulating layer
The effect of the protective layer 21 is to reduce cooling water thermal loss in the heat exchange pipeline 6.
The coating for selective absorption 19 is greater than or equal to 0.92 to the absorptivity of sunlight, and emissivity is less than or equal to
0.07.In order to make solar heat transfer efficiency reach best, coating for selective absorption 19 need to meet two conditions, first, in the sun
There is absorptivity high as possible in spectrum;Second is that there is alap emissivity in heat radiation wave-length coverage.The insulating layer 20
Thermal insulation material thermal coefficient be less than or equal to 0.03W/ (mk), 20 outer surface radiation loss of the insulating layer is less than or equal to
The 0.1% of hot spot gross energy.21 outside wall surface of the protective layer selects finishing polish type lead material, in order to reduce nature light absorption pair
The influence of measurement accuracy, 21 material blackness of the protective layer are less than or equal to 0.039.
Optionally, the outer wall of the first pipe 9 is equipped with the insulating layer 20 and the protective layer 21.The first pipe
9 are used for transmission cold working medium, in order to make cold working medium keep constant temperature, are changed described in the cold working medium entrance that the first thermometric pressure measuring unit 13 measures
The temperature of heat pipeline 6 is more accurate, and the insulating layer 20 and the protective layer 21 are equipped on the outer wall of the first pipe 9.
Optionally, the pipeline outer wall between the second thermometric pressure measuring unit 14 and hot working fluid outlet 8 is equipped with described
Insulating layer 20 and the protective layer 21.The second pipe 10 is used for transmission hot working fluid, in order to make the second thermometric pressure measuring unit 14
The temperature that the hot working fluid measured flows out the heat exchange pipeline 6 is more accurate, avoids radiation loss, is filled in the second thermometric pressure measurement
The pipeline outer wall set between 14 and hot working fluid outlet 8 is equipped with the insulating layer 20 and the protective layer 21.
Optionally, the side to light 4 includes mirror surface.Mirror surface can both reflect away the light for not entering chamber,
It avoids the light that the aperture 2 is not entered chamber from burning out, and the heat that inner cavity is overflowed from aperture can be reduced, it can be with
Reduce the radiation loss between the cavity type heat absorber 1 and air.
Optionally, it is coated with infrared reflection coating on the shady face 5, for the heat radiation ray inside reflection chamber, subtracted
The thermal radiation loss of few cavity type heat absorber 1;Reflective wind shield 3 has good barrier effect to natural wind simultaneously, it is possible to reduce outer
The forced convertion heat loss that boundary's wind-force is brought.
When being measured light spot energy by the system, according to the position of surveyed hot spot, by the daylighting of the cavity type heat absorber 1
2 the surveyed hot spots of alignment of mouth;Incident ray is radiated on the inner cavity of the cavity type heat absorber 1, and stray light passes through the reflective gear
Aerofoil 3 is reflected, and the energy at hot spot enters 1 inner cavity of cavity type heat absorber by the aperture 2.Light spot energy is by the selection
Property absorber coatings 19 absorbed, then be cooled water take away;The heat radiation of unabsorbed energy and inner wall itself is on inner cavity
Multiple reflections are carried out in the form of light, and the energy of reflection is absorbed by the coating for selective absorption 19;According to first thermometric
Temperature, pressure and 15 and of first flow measuring device that pressure measuring unit 13 and the second thermometric pressure measuring unit 14 measure
The flow that the second flow measuring device 18 measures, is calculated the energy at surveyed hot spot.In order to make measurement result more
Accurately, the cooling water outlet and inlet temperature difference under same hot spot different flow is repeatedly measured, and acquires the average value repeatedly measured,
In, the flow of cooling water can be adjusted by the regulating valve 16.
By above technical scheme, this application provides a kind of light spot energy measuring systems suitable for Salar light-gathering, should
System includes cavity type heat absorber 1, and reflective wind shield 3 is arranged at the aperture 2 of cavity type heat absorber 1, had both reflected away and has not entered chamber
The light of room avoids the light that the aperture 2 is not entered chamber from burning out, and reduces what inner cavity was overflowed from the aperture 2
Heat, can also reduce the heat loss through convection loss between the cavity type heat absorber 1 and air, and system is measured to improve light spot energy
The safety of system and the accuracy of measurement result.
It should be noted that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include but also include not having so that article or equipment including a series of elements include not only those elements
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited by sentence "including a ..." in the case of more limiting, it is not excluded that in the mistake for including the element
There is also other identical elements in journey, method, article or equipment.
The above is only the specific implementation mode of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or range.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
It should be understood that the application is not limited to the content for being described above and being shown in the accompanying drawings, and can
To carry out various modifications and change without departing from the scope.Scope of the present application is only limited by the accompanying claims.
Claims (10)
1. a kind of light spot energy measuring system suitable for Salar light-gathering, which is characterized in that including cavity type heat absorber (1),
In,
The chamber of the cavity type heat absorber (1) is equipped with aperture (2), and the opening of the aperture (2) is equipped with reflective keep out the wind
Plate (3);
The reflective wind shield (3) is the truncated cone-shaped thin plate of upper and lower opening, and the reflectivity of the reflective wind shield (3) is more than or equal to
0.9;The reflective wind shield (3) includes side to light (4) and shady face (5), the reflective wind shield (3) and the aperture
(2) it is seamlessly connected;
The cavity type heat absorber (1) is barrel shaped structure, and heat exchange pipeline is equipped between the inner cavity and outer wall of the cavity type heat absorber (1)
(6);
Described aperture (2) one end is equipped with cold working medium entrances (7), and the other end is equipped with hot working fluid and exports (8), the cold working medium entrances
(7) it is connected by heat exchange pipeline (6) with hot working fluid outlet (8);
The cold working medium entrances (7) connect with first pipe (9), and are connected to sink (11);
The hot working fluid outlet (8) connect with second pipe (10), and is connected to accumulator tank (12);
The first pipe (9) is equipped with the first thermometric pressure measuring unit (13), and the second pipe (10) is equipped with the second thermometric
Pressure measuring unit (14).
2. the light spot energy measuring system according to claim 1 suitable for Salar light-gathering, which is characterized in that described anti-
The angle of light trap aerofoil (3) and the vertical central axis of the cavity type heat absorber (1) is any value between 45 to 80 degree.
3. the light spot energy measuring system according to claim 1 suitable for Salar light-gathering, which is characterized in that described to adopt
The area of optical port (2) is less than or equal to the 1% of the cavity type heat absorber (1) chamber inner wall surface area.
4. the light spot energy measuring system according to claim 1 suitable for Salar light-gathering, which is characterized in that described
First flow measuring device (15), regulating valve (16) and water pump (17), the flow measurement device are additionally provided on one pipeline (9)
(15) it is arranged between the first thermometric pressure measuring unit (13) and the water pump (17), the regulating valve (16) is arranged described first
Between flow measurement device (15) and the water pump (17).
5. the light spot energy measuring system according to claim 1 suitable for Salar light-gathering, which is characterized in that described
Two pipelines (10) are equipped with second flow measuring device (18).
6. the light spot energy measuring system according to claim 1 suitable for Salar light-gathering, which is characterized in that described to change
The light side of meeting of heat pipeline (6) is coated with coating for selective absorption (19), and the backlight side of the heat exchange pipeline (6) is equipped with insulating layer (20)
With protective layer (21).
7. the light spot energy measuring system according to claim 6 suitable for Salar light-gathering, which is characterized in that described
The outer wall of one pipeline (9) is equipped with the insulating layer (20) and the protective layer (21).
8. the light spot energy measuring system according to claim 6 suitable for Salar light-gathering, which is characterized in that described
Pipeline outer wall between two thermometric pressure measuring units (14) and hot working fluid outlet (8) is equipped with the insulating layer (20) and the guarantor
Sheath (21).
9. the light spot energy measuring system according to claim 1 suitable for Salar light-gathering, which is characterized in that described to meet
Smooth surface (4) includes mirror surface.
10. the light spot energy measuring system according to claim 1 suitable for Salar light-gathering, which is characterized in that described
Shady face is coated with infrared reflection coating on (5).
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Cited By (4)
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CN110082008A (en) * | 2019-06-06 | 2019-08-02 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of measurement hot spot divides the device and method of region heat and heat flow density |
CN110108050A (en) * | 2019-06-06 | 2019-08-09 | 中国能源建设集团陕西省电力设计院有限公司 | Paraboloid thermal-arrest light spot energy and Heat flux calculation system and method |
CN110108186A (en) * | 2019-06-06 | 2019-08-09 | 中国能源建设集团陕西省电力设计院有限公司 | Measure the system and method for solar energy mirror field spot diameter |
CN110108326A (en) * | 2019-06-06 | 2019-08-09 | 中国能源建设集团陕西省电力设计院有限公司 | Trapezoidal thermal-arrest light spot energy and Heat flux calculation system and method |
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- 2017-10-31 CN CN201721428742.XU patent/CN207751586U/en active Active
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110082008A (en) * | 2019-06-06 | 2019-08-02 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of measurement hot spot divides the device and method of region heat and heat flow density |
CN110108050A (en) * | 2019-06-06 | 2019-08-09 | 中国能源建设集团陕西省电力设计院有限公司 | Paraboloid thermal-arrest light spot energy and Heat flux calculation system and method |
CN110108186A (en) * | 2019-06-06 | 2019-08-09 | 中国能源建设集团陕西省电力设计院有限公司 | Measure the system and method for solar energy mirror field spot diameter |
CN110108326A (en) * | 2019-06-06 | 2019-08-09 | 中国能源建设集团陕西省电力设计院有限公司 | Trapezoidal thermal-arrest light spot energy and Heat flux calculation system and method |
CN110108326B (en) * | 2019-06-06 | 2023-10-10 | 中国能源建设集团陕西省电力设计院有限公司 | Trapezoidal heat collection light spot energy and heat flux density measurement system and method |
CN110108050B (en) * | 2019-06-06 | 2023-11-21 | 中国能源建设集团陕西省电力设计院有限公司 | Parabolic heat collection light spot energy and heat flux density measurement system and method |
CN110108186B (en) * | 2019-06-06 | 2024-02-20 | 中国能源建设集团陕西省电力设计院有限公司 | System and method for measuring spot diameter of solar mirror field |
CN110082008B (en) * | 2019-06-06 | 2024-03-12 | 中国能源建设集团陕西省电力设计院有限公司 | Device and method for measuring heat and heat flux density of partitioned areas of light spots |
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