CN107449511B - Facula energy closed type hydraulic medium measuring system and method - Google Patents
Facula energy closed type hydraulic medium measuring system and method Download PDFInfo
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- CN107449511B CN107449511B CN201710825172.6A CN201710825172A CN107449511B CN 107449511 B CN107449511 B CN 107449511B CN 201710825172 A CN201710825172 A CN 201710825172A CN 107449511 B CN107449511 B CN 107449511B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000000498 cooling water Substances 0.000 claims abstract description 74
- 239000006096 absorbing agent Substances 0.000 claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 7
- 238000002309 gasification Methods 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 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
- G01J1/56—Photometry, e.g. photographic exposure meter using radiation pressure or radiometer effect
Abstract
The application provides a facula energy closed type hydraulic medium measuring system and a facula energy closed type hydraulic medium measuring method, wherein the facula energy closed type hydraulic medium measuring system comprises a pressurizing storage tank, a cavity type heat absorber and a heat exchanger, an opening is arranged on a cavity of the cavity type heat absorber, a cooling water flow passage is arranged in the cavity, a first water inlet and a first water outlet are arranged on the opening, and the first water inlet is connected with the pressurizing storage tank through a first pipeline; the first water outlet is connected with the heat exchanger through a second pipeline and is connected with the pressurized storage tank; the first water inlet and the first water outlet are respectively provided with a first temperature measuring element and a second temperature measuring element. Cooling water flows out from the pressurized storage tank and enters the cooling water flow channel, absorbs heat and then enters the heat exchanger through the second pipeline, and enters the pressurized storage tank for recycling after heat exchange. The system can measure the facula energy, and is a closed hydraulic medium system, the pressurized storage tank improves the gasification temperature of cooling water, increases the temperature difference between the inlet and outlet of the cooling water in the cavity, and improves the measurement accuracy.
Description
Technical Field
The application relates to measurement of light spot energy, in particular to a light spot energy closed type hydraulic medium measurement system and a method.
Background
Solar thermal power generation is a power generation technology for converting solar radiation energy into electric energy by utilizing an optical system to gather solar radiation heat, and is one of main ways for large-scale utilization of renewable energy. The solar energy light-gathering device is core equipment of a solar thermal power generation technology, wherein the light spot energy is an important parameter of the solar energy light-gathering device, and the quality of a light-gathering system can be analyzed through measuring the light spot energy, so that whether the light spot distribution in the current state meets the requirement of system power generation is judged.
In the prior art, a light spot measuring system and a light spot measuring method exist, the system comprises a heat absorber, a cooling water channel is arranged in the heat absorber, a water inlet of the cooling water channel is connected with a water inlet pipe, and the tail end of the water inlet pipe is connected with a water tank; the water outlet of the cooling water channel is connected with a cooling water recovery pipeline, and the tail end of the cooling water recovery pipeline is connected with a recovery groove. And the pipelines of the water inlet and the water outlet are respectively provided with a thermometer, and the energy of the light spot is calculated by measuring the temperature difference of the cooling water.
However, in the spot measurement system, cooling water is led out from the water tank and enters the cooling water channel, the temperature of the cooling water channel is higher due to the fact that the temperature of the condensing focus of the heat absorber is higher, moisture in the cooling water channel is easy to gasify, and the temperature measurement result of the water outlet of the cooling water channel is affected, so that measurement errors are increased, and the measurement result is inaccurate.
Disclosure of Invention
The application provides a facula energy closed type hydraulic medium measuring system and a facula energy closed type hydraulic medium measuring method, which solve the problem that cooling water is easy to gasify, reduce measuring errors and improve testing precision.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides a facula energy closed hydraulic medium measuring system, which comprises a pressurized storage tank and a cavity type heat absorber, wherein the pressurized storage tank is connected with the cavity type heat absorber through a pipeline; wherein, the liquid crystal display device comprises a liquid crystal display device,
the cavity type heat absorber comprises a shell and a cavity, wherein an opening is formed in the cavity;
the chamber comprises an inner cavity and an outer cavity; a cooling water flow passage is arranged between the inner cavity and the outer cavity;
a first water inlet and a first water outlet are formed in two sides of the opening; the first water inlet is connected with the pressurized storage tank through a first pipeline; the first water outlet is connected with the pressurized storage tank through a second pipeline;
a first temperature measuring element is arranged on the first pipeline; the second pipeline is provided with a second temperature measuring element and a heat exchanger, and the heat exchanger is connected with the pressurized storage tank;
the pressurized storage tank and the cooling water flow passage form a closed circulating water loop.
Optionally, the system further comprises a gas cylinder connected to the pressurized storage tank.
Optionally, a second water outlet and a second water inlet are arranged on the pressurized storage tank, the second water outlet is connected with the first pipeline, and the second water inlet is connected with the second pipeline.
Optionally, the light facing side of the cooling water flow channel is coated with a selective absorption coating, and the backlight side of the cooling water flow channel is provided with an insulation layer and a protection layer.
Optionally, a first load cell, a water pump and a flow measurement device are arranged on the first pipeline, and the first load cell is arranged between the first temperature measurement element and the first water inlet; the flow measuring device is arranged between the first temperature measuring element and the water pump, and a ball valve is arranged between the water pump and the flow measuring device.
Optionally, a second load cell is arranged on the second pipeline, and the second load cell is arranged between the second temperature measuring cell and the first water outlet.
Optionally, the area of the opening is less than or equal to 1.0% of the surface area of the inner wall of the chamber.
Optionally, the selective absorption coating has an absorptivity of sunlight greater than or equal to 0.92 and an emissivity of less than or equal to 0.07.
The application also provides a light spot energy closed type hydraulic medium measuring method, which measures the light spot energy through a light spot energy closed type hydraulic medium measuring system and comprises the following steps:
according to the position of the measured light spot, aligning the opening of the cavity type heat absorber with the measured light spot;
incident light irradiates the inner cavity of the cavity type heat absorber, and energy at a light spot enters the cavity;
the energy of the light spot is absorbed by the selective absorption coating and then taken away by cooling water;
the unabsorbed energy and the heat radiation of the inner wall are reflected for a plurality of times in the form of light on the inner cavity, and the reflected energy is absorbed by the selective absorption coating;
and calculating the energy of the measured light spot according to the temperatures measured by the first temperature measuring element and the second temperature measuring element and the flow measured by the flow measuring device.
Optionally, the method for measuring the facula energy closed hydraulic medium further comprises the following steps:
and measuring the temperature difference of the cooling water inlet and the cooling water outlet under different flow rates of the same light spot for a plurality of times, and obtaining the average value of the plurality of times of measurement to obtain the energy of the measured light spot.
By the technical scheme, the application provides a facula energy closed type hydraulic medium measuring system and a facula energy closed type hydraulic medium measuring method. Cooling water flows out from the pressurized storage tank and enters a cooling water flow channel in the cavity type heat absorber cavity, and enters the heat exchanger through the second pipeline after absorbing heat, and enters the pressurized storage tank for recycling after heat exchange. The system can measure the facula energy, and is a closed hydraulic medium system, the pressurized storage tank improves the gasification temperature of cooling water, increases the temperature difference between the inlet and outlet of the cooling water in the cavity, reduces the measurement error and improves the measurement accuracy.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a closed type hydraulic medium measuring system with light spot energy;
fig. 2 is a schematic structural diagram of a cavity heat absorber according to an embodiment of the present application.
Reference numerals illustrate: 1. a pressurized storage tank; a 2-chamber heat absorber; 3. a housing; 4. a chamber; 41. an inner cavity; 42. an outer cavity; 43. a cooling water flow passage; 5. an opening; 6. a first water inlet; 7. a first water outlet; 8. a first pipe; 9. a second pipe; 10. a first temperature measuring element; 11. a second temperature measuring element; 12. a second water outlet; 13. a second water inlet; 14. a heat exchanger; 15. a gas cylinder; 16. a selective absorbing coating; 17. a heat preservation layer; 18. a protective layer; 19. a first load cell; 20. a second load cell; 21. a water pump; 22. a flow measuring device; 23. a ball valve; 24. a third load cell; 25. a safety valve; 26. and a sewage outlet.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Referring to fig. 1, a schematic structural diagram of a light spot energy closed hydraulic medium measurement system is provided.
The utility model provides a facula energy closed hydraulic medium measurement system, includes pressurization storage tank 1 and chamber formula heat absorber 2, pressurization storage tank 1 with chamber formula heat absorber 2 passes through the pipeline connection. The pressurized storage tank 1 is used for providing cooling water, and by increasing the gasification pressure of the water in the pressurized storage tank 1 so as to increase the gasification temperature of the water, the temperature difference between the cooling water inlet and the cooling water outlet of the cavity type heat absorber 2 can be increased, and the measurement error can be reduced. The heat absorber is a key component in the solar concentrating system, and the efficiency of the heat absorber has important influence on the efficiency of the whole solar concentrating system. The cavity type heat absorber 2 in the system is mainly used for absorbing solar radiation energy collected by the condensing system, converting the collected solar energy into heat energy in a heat conduction and convection mode and transmitting the heat energy to a heat transfer working medium.
Referring to fig. 2, a schematic structural diagram of a cavity heat absorber is provided in an embodiment of the present application.
The cavity type heat absorber 2 comprises a shell 3 and a cavity 4, wherein an opening 5 is arranged on the cavity 4. The chamber 4 comprises an inner cavity 41 and an outer cavity 42; a cooling water flow passage 43 is arranged between the inner cavity 41 and the outer cavity 42; the two sides of the opening 5 are provided with a first water inlet 6 and a first water outlet 7.
The cavity 4 of the cavity type heat absorber 2 is of a spherical structure, the opening 5 is used for arranging light spots, and the energy of the measured light spots enters the cavity 4 through the opening 5 and irradiates on the inner wall of the cavity 4. The inner cavity 41 is a light absorption area, and the outer cavity 42 is a working medium water full area. When the solar light-gathering system is used for reflecting the image of the light spot, the heat absorber needs to be continuously cooled by the cooling system in order to prevent the equipment from being burnt due to the ultrahigh temperature of the light spot. The cooling water flow channel 43 is used for cooling the cavity type heat absorber 2, and the cooling water is pressurized by the pressurizing storage tank 1, so that the gasification temperature of the cooling water is increased, and the water working medium in the cooling water flow channel 43 is not easy to gasify. The cooling water flow channel 43 is in a coil structure, so that the inlet and outlet of the coil of the cooling water flow channel 43, namely, the first water inlet 6 and the first water outlet 7 are arranged on two sides of the opening 5.
The first water inlet 6 is connected with the pressurized storage tank 1 through a first pipeline 8, and the first water outlet 7 is connected with the pressurized storage tank 1 through a second pipeline 9. The first pipeline 8 is provided with a first temperature measuring element 10, and the second pipeline 9 is provided with a second temperature measuring element 11 and a heat exchanger 14. The heat exchanger 14 is connected with the pressurized storage tank 1, the pressurized storage tank 1 and the cooling water flow channel 43 form a closed circulating water loop, and the cooling water flow channel 43 and the pressurized storage tank 1 form a closed circulating system through a first pipeline 8 and a second pipeline 9. The heat protection function of the cavity type heat absorber 2 is very good.
The first temperature measuring element 10 is used for measuring the temperature of the pipeline of the cooling water at the first water inlet 6, and the second temperature measuring element 11 is used for measuring the temperature of the pipeline of the cooling water flowing out of the first water outlet 7 after absorbing heat. The first temperature measuring element 10 and the second temperature measuring element 11 can be thermocouple temperature measuring elements, because the water working medium has a certain flow velocity in the pipeline, and the first temperature measuring element 10 and the second temperature measuring element 11 are arranged near the bending position of the pipeline. The cooling water after absorbing heat enters the heat exchanger 14 through the second pipeline 9, and the maximum power of the heat exchanger 14 is equal to the heat of the incident light spots. In order to reduce the temperature of the fluid in the second pipe 9, the heat exchanger 14 is installed close to the pressurized storage tank 1, so as to ensure the safety of the pressurized storage tank 1 and the medium state in the pressurized storage tank 1.
The heat exchanger 14 can be a plate heat exchanger, and the plate heat exchanger has the advantages of high heat transfer efficiency, small heat loss, convenient installation and cleaning, and the like. The plate heat exchanger is formed by stacking a series of thin metal sheets with certain corrugated shapes, thin rectangular channels are formed among various plate sheets, and heat exchange is carried out through the plate sheets. The water working medium flows in a narrow and tortuous channel formed between two plates, hot water and cooling water sequentially pass through the channel, a separation plate is arranged in the middle to separate fluid, and heat exchange is carried out through the plates.
Optionally, the system further comprises a gas cylinder 15, said gas cylinder 15 being connected to said pressurized tank 1. The gas cylinder 15 is used for improving the gasification pressure of the cooling water in the pressurized storage tank 1, nitrogen can be selected as gas in the gas cylinder 15, the chemical property of the nitrogen is stable, and the cost is low. The pressure of the gas cylinder 15 is determined according to the experimental requirements at the time of use.
Optionally, a second water outlet 12 and a second water inlet 13 are provided on the pressurized storage tank 1, the second water outlet 12 is connected with the first pipeline 8, and the second water inlet 13 is connected with the second pipeline 9. Cooling water enters the first pipeline 8 through the second water outlet 12, then enters the cooling water flow channel 43 to absorb heat, then enters the heat exchanger 14 through the second pipeline 9 to be cooled, and then enters the pressurized storage tank 1 through the second water inlet 13. The top of the pressurized storage tank 1 is provided with a third load cell 24 and a safety valve 25, and the bottom of the pressurized storage tank 1 is provided with a drain outlet 26. The third load cell 24 can measure the water working medium and medium pressure in the pressurized storage tank 1, so as to ensure the safety of the pressurized storage tank 1. The safety valve 25 ensures that the pressurized storage tank 1 is not overpressured, and the drain outlet 26 is mainly used for facilitating the drain during the cleaning of the pressurized storage tank 1.
Optionally, the light facing side of the cooling water flow channel 43 is coated with a selective absorption coating 16, and the backlight side of the cooling water flow channel 43 is provided with an insulation layer 17 and a protection layer 18. The selective absorption coating 16 is used for absorbing the energy of the incident light spot, and the absorber is made of high-temperature resistant absorption materials in the area of the absorber due to the relatively high temperature of the focusing focus of the absorber. The heat insulating layer 17 and the protective layer 18 serve to reduce the heat loss of the cooling water in the cooling water flow passage 43.
In order to ensure the accuracy of the temperatures measured by the first temperature measuring element 10 and the second temperature measuring element 11, a heat insulation layer 17 and a protection layer 18 are arranged on the pipeline between the first water inlet 6 and the first temperature measuring element 10 and the pipeline between the first water outlet 7 and the second temperature measuring element 11. The outer wall surface of the shell 3 of the pressurized storage tank 1 is provided with an insulation layer 17 and a protection layer 18, so that the constant temperature of cooling water in the pressurized storage tank 1 and the medium state in the pressurized storage tank 1 can be ensured. The heat conduction coefficient of the heat insulation material of the heat insulation layer 17 is less than or equal to 0.03W/(m.k), and the heat dissipation loss of the outer surface of the heat insulation layer 17 is less than or equal to 0.1% of the total energy of the light spots. The outer wall surface of the protective layer 18 is made of a fine polished lead material, and in order to reduce the influence of natural light absorption on measurement accuracy, the blackness of the protective layer 18 material is less than or equal to 0.039.
Optionally, a first load cell 19, a water pump 21 and a flow measurement device 22 are arranged on the first pipeline 8, and the first load cell 19 is arranged between the first water inlet 6 and the first temperature measurement element 10; the flow measuring device 22 is arranged between the first temperature measuring element 10 and the water pump 21, and a ball valve 23 is arranged between the water pump 21 and the flow measuring device 22. The first load cell 19 is used to measure the pressure of the cooling water flowing through the first pipe 8 into the first water inlet 6. The water pump 21 is used for conveying cooling water and ensuring that the cooling water has a certain pressure. The flow rate of the cooling water is regulated by the ball valve 23, and the flow rate measuring device 22 can effectively record and measure the flow rate of the cooling water.
Optionally, a second load cell 20 is disposed on the second pipe 9, and the second load cell 20 is disposed between the second temperature measuring element 11 and the first water outlet 7. The second load cell 20 is used for measuring the pressure of the cooling water flowing out of the first water outlet 7 and into the second pipeline 9.
Optionally, the area of the opening 5 is less than or equal to 1.0% of the surface area of the inner wall of the chamber 4. The shape of the opening 5 is the same as the shape of the spot to be measured.
Optionally, the selective absorption coating 16 has an absorptivity of sunlight greater than or equal to 0.92 and an emissivity of less than or equal to 0.07. In order to optimize the solar thermal conversion efficiency, the selective absorption coating 16 needs to meet two conditions, one is as high as possible absorption in the solar spectrum; secondly, there is as low emissivity as possible in the heat radiation wavelength range.
The application also provides a light spot energy closed type hydraulic medium measuring method, which measures the light spot energy through a light spot energy closed type hydraulic medium measuring system and comprises the following steps: according to the position of the measured light spot, the opening 5 of the cavity type heat absorber 2 is aligned with the measured light spot; the incident light impinges on the inner cavity 41 of the cavity absorber 2, and energy at the spot thereby enters the cavity 4; the energy of the light spot is absorbed by the selective absorption coating 16 and then taken away by the cooling water; the unabsorbed energy and the heat radiation of the inner wall itself are reflected on the inner cavity for multiple times in the form of light, and the reflected energy is absorbed by the selective absorption coating 16; the energy at the measured spot is calculated from the temperatures measured by the first and second temperature measuring elements 10, 11 and the flow measured by the flow measuring device 22.
Optionally, the method for measuring the facula energy closed hydraulic medium further comprises the following steps: and measuring the temperature difference of the cooling water inlet and the cooling water outlet under different flow rates of the same light spot for a plurality of times, and obtaining the average value of the plurality of times of measurement to obtain the energy of the measured light spot. In order to make the measurement result more accurate, a plurality of flow measurements can be made for the same spot, wherein the flow of cooling water can be regulated by means of the ball valve 23.
By the technical scheme, the application provides a facula energy closed type hydraulic medium measuring system and a facula energy closed type hydraulic medium measuring method, wherein the system comprises a pressurized storage tank 1, a cavity type heat absorber 2 and a heat exchanger 14. The cooling water flows out from the pressurized storage tank 1 and enters a cooling water flow channel 43 in the cavity 4 of the cavity type heat absorber 2, and enters the heat exchanger 14 through the second pipeline 9 after absorbing heat, and enters the pressurized storage tank 1 for recycling after heat exchange. The system can measure the facula energy, and is a closed hydraulic medium system, the pressurized storage tank 1 improves the gasification temperature of cooling water, increases the temperature difference between the inlet and the outlet of the cooling water in the cavity 4, reduces the measurement error and improves the measurement accuracy.
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It will be understood that the application is not limited to what has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. The facula energy closed type hydraulic medium measuring system is characterized by comprising a pressurizing storage tank (1) and a cavity type heat absorber (2), wherein the pressurizing storage tank (1) and the cavity type heat absorber (2) are connected through a pipeline,
the cavity type heat absorber (2) comprises a shell (3) and a cavity (4), wherein an opening (5) is formed in the cavity (4);
the chamber (4) comprises an inner cavity (41) and an outer cavity (42); a cooling water flow passage (43) is arranged between the inner cavity (41) and the outer cavity (42);
the two sides of the opening (5) are provided with a first water inlet (6) and a first water outlet (7); the first water inlet (6) is connected with the pressurized storage tank (1) through a first pipeline (8); the first water outlet (7) is connected with the pressurized storage tank (1) through a second pipeline (9);
a first temperature measuring element (10) is arranged on the first pipeline (8); a second temperature measuring element (11) and a heat exchanger (14) are arranged on the second pipeline (9), and the heat exchanger (14) is connected with the pressurized storage tank (1);
the pressurized storage tank (1) and the cooling water flow passage (43) form a closed circulating water loop.
2. The spot energy closed hydraulic medium measuring system according to claim 1, further comprising a gas cylinder (15), the gas cylinder (15) being connected with the pressurized tank (1).
3. The facula energy closed hydraulic medium measuring system according to claim 1, wherein a second water outlet (12) and a second water inlet (13) are arranged on the pressurized storage tank (1), the second water outlet (12) is connected with the first pipeline (8), and the second water inlet (13) is connected with the second pipeline (9).
4. The spot energy closed type hydraulic medium measuring system according to claim 1, wherein a light facing side of the cooling water flow channel (43) is coated with a selective absorption coating (16), and a backlight side of the cooling water flow channel (43) is provided with an insulation layer (17) and a protection layer (18).
5. The spot energy closed type hydraulic medium measuring system according to claim 1, wherein a first load cell (19), a water pump (21) and a flow measuring device (22) are arranged on the first pipeline (8), and the first load cell (19) is arranged between the first temperature measuring element (10) and the first water inlet (6); the flow measuring device (22) is arranged between the first temperature measuring element (10) and the water pump (21), and a ball valve (23) is arranged between the water pump (21) and the flow measuring device (22).
6. The spot energy closed type hydraulic medium measuring system according to claim 1, wherein a second load cell (20) is arranged on the second pipeline (9), and the second load cell (20) is arranged between the second temperature measuring element (11) and the first water outlet (7).
7. The spot energy closed hydraulic medium measurement system according to claim 1, characterized in that the area of the opening (5) is less than or equal to 1.0% of the surface area of the inner wall of the chamber (4).
8. The spot energy closed type hydraulic medium measuring system according to claim 4, wherein the absorptivity of the selective absorption coating (16) to sunlight is greater than or equal to 0.92, and the emissivity is less than or equal to 0.07.
9. A method for measuring a closed type hydraulic medium of light spot energy, which is characterized by measuring the light spot energy by using the closed type hydraulic medium of light spot energy measuring system as set forth in claim 1, comprising:
according to the position of the measured light spot, aligning an opening (5) of the cavity type heat absorber (2) to the measured light spot;
the incident light irradiates on the inner cavity (41) of the cavity type heat absorber (2), and the energy at the light spot enters the cavity (4) from the light spot;
the energy of the light spot is absorbed by the selective absorption coating (16) and then taken away by cooling water;
the unabsorbed energy and the heat radiation of the inner wall itself are reflected repeatedly in the form of light on the inner cavity (41), the reflected energy being absorbed by the selective absorption coating (16);
the energy at the measured light spot is calculated according to the temperature measured by the first temperature measuring element (10) and the second temperature measuring element (11) and the flow measured by the flow measuring device (22).
10. The spot energy closed type hydraulic medium measuring method according to claim 9, further comprising:
and measuring the temperature difference of the cooling water inlet and the cooling water outlet under different flow rates of the same light spot for a plurality of times, and obtaining the average value of the plurality of times of measurement to obtain the energy of the measured light spot.
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| CN201710825172.6A CN107449511B (en) | 2017-09-14 | 2017-09-14 | Facula energy closed type hydraulic medium measuring system and method |
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| CN201710825172.6A CN107449511B (en) | 2017-09-14 | 2017-09-14 | Facula energy closed type hydraulic medium measuring system and method |
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| CN102126704A (en) * | 2011-01-13 | 2011-07-20 | 西安交通大学 | System and method for producing hydrogen by collecting solar energy in multi-plate mode and coupling biomass supercritical water gasification |
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| CN106989524A (en) * | 2017-04-28 | 2017-07-28 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused |
| CN207366079U (en) * | 2017-09-14 | 2018-05-15 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of light spot energy enclosed device of working medium measuring system |
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