CN106989524A - A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused - Google Patents
A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused Download PDFInfo
- Publication number
- CN106989524A CN106989524A CN201710297379.0A CN201710297379A CN106989524A CN 106989524 A CN106989524 A CN 106989524A CN 201710297379 A CN201710297379 A CN 201710297379A CN 106989524 A CN106989524 A CN 106989524A
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- Prior art keywords
- cooling water
- water
- pipeline
- optically focused
- solar energy
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000498 cooling water Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000006096 absorbing agent Substances 0.000 claims abstract description 22
- 230000010748 Photoabsorption Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Sustainable Development (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused, the system includes cavity type heat absorber, the inner chamber of cavity type heat absorber is the photo-absorption region for being laid with cooling water flow conduits, can make the opening that incident light takes in inner chamber provided with one on the chamber of cavity type heat absorber；The water inlet of cooling water flow conduits is connected with cooling water by pipeline and send water system, and the delivery port of cooling water flow conduits is connected with cooling water reclamation system by pipeline；Cooling water send water system to be provided with the first load cell, temperature element and the mass flow meter for sending water for measuring；Cooling water reclamation system is provided with the second load cell and temperature element for measuring recycle-water.The present invention has replenished the blank in the field, either dish-style concentrator or solar energy heating utilization, and the energy value of hot spot is all key parameter.
Description
Technical field
The invention belongs to solar energy utilization technique field, it is related to light spot energy measurement, it is especially a kind of to be applied to the sun
The light spot energy measuring system and method for energy dish-style optically focused.
Background technology
Measured more than the measurement of current light spot energy using CCD camera or irradiation level inductor, CCD camera not only cost
Height, and thermal protection is more difficult, and easily camera is caused to damage, and the measuring method is to obtain camera under a certain specified conditions
Colored light spot image handled as entirety, have ignored the difference that camera is shot in different parameters hypograph, with
And the difference existed between each component data of same parameters hypograph red, green, blue, can exist analysis result uncertain；And spoke
Illumination inductor equally exists thermal protection hardly possible and is easily damaged problem, and the energy range of measurement is limited.
The content of the invention
It is an object of the invention to overcome the shortcoming of above-mentioned prior art there is provided a kind of suitable for solar energy dish-style optically focused
Light spot energy measuring system and method.
The purpose of the present invention is achieved through the following technical solutions：
This light spot energy measuring system suitable for solar energy dish-style optically focused, including cavity type heat absorber, the cavate are inhaled
The inner chamber of hot device is the photo-absorption region for being laid with cooling water flow conduits, on the chamber of cavity type heat absorber provided with one can make into
Penetrate the opening that light takes in inner chamber；The water inlet of the cooling water flow conduits is connected with cooling water by pipeline and send water system, described cold
But the delivery port of water flow passage is connected with cooling water reclamation system by pipeline；The cooling water send water system to be provided with for measuring
Send the first load cell, temperature element and the mass flow meter of water；The cooling water reclamation system is provided with for surveying
Measure the second load cell and temperature element of recycle-water.
Further, above-mentioned cavity type heat absorber has the cooling water flow conduits laid in spherical structure cavity, the cavity for one
Meet light side and scribble the coating for selective absorption higher to sunshine absorptivity, the backlight side of cooling water flow conduits is provided with heat-insulation layer
And protective layer.
Further, the outside wall surface material blackness of above-mentioned protective layer is less than or equal to 0.039.
Further, above-mentioned cooling water send water system also to include water pump, and the water inlet of the water pump is connected with by pipeline
Bosh, the delivery port of water pump is connected to the water inlet of mass flow meter, the mass flow measurement by pipeline
The delivery port of device is connected to the water inlet of cooling water flow conduits by pipeline；Pipe between water pump and mass flow meter
Ball valve is provided with road；Is disposed with pipeline between mass flow meter and the water inlet of cooling water flow conduits
One temperature element and the first load cell.
Further, above-mentioned cooling water reclamation system includes cooling water accumulator tank, and the delivery port of the cooling water flow conduits leads to
Piping is connected directly in cooling water accumulator tank, on the pipeline between cooling water accumulator tank and the delivery port of cooling water flow conduits
It is disposed with the second temperature element and the second load cell.
Further, the above need to be identical with institute light-metering spot in the shape of the opening of cavity type heat absorber, and the area of opening need to be less than
Or 0.6% of the chamber inner wall surface area equal to whole cavity type heat absorber.
Further, above-mentioned coating for selective absorption is more than or equal to 0.92 to the absorptivity of sunshine, emissivity be less than or
Equal to 0.07.
Further, the insulation material thermal conductivity factor of above-mentioned heat-insulation layer is less than or equal to 0.03W/ (m.k), and outer surface radiating is damaged
Lose and be less than or equal to hot spot gross energy 0.1%；The outside wall surface of protective layer selects finishing polish type lead material.
The present invention also proposes a kind of measurement based on the above-mentioned light spot energy measuring system suitable for solar energy dish-style optically focused
Method：
By the opening of cavity type heat absorber alignment institute light-metering spot, the energy at hot spot is hence into chamber, into the light of chamber
It is radiated on inwall, is absorbed by the coating for selective absorption of inwall, the water that is then cooled is taken away；Unabsorbed energy and interior
The heat radiation of wall itself may proceed to carry out multiple reflections in intracavitary in the form of light, and often reflect once all can absorb one by internal face
It is secondary；Finally by the temperature difference and flow of measurement cooling water outlet and inlet, to calculate the energy at hot spot, and sent by cooling water
Ball valve regulating flow in water system, the measurement of multiple flows is carried out to same hot spot so that measurement result is more accurate.
The invention has the advantages that：
The present invention is applied to the light spot energy measuring system and method for solar energy dish-style optically focused, the letter of its measuring system structure
It is single, it is easy to production and processing, and also product used and processing technology are all ripe, and risk is low, and thermal protection is simple, and durable, cost is low；It is former
Reason understands, it is easy to grasp and flexible, and energy measurement scope is wide.Either dish-style concentrator or solar energy heating utilization,
The energy value of hot spot is all key parameter.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Wherein：1 is cavity type heat absorber；2 be cooling water flow conduits；3 be opening；4 be mass flow meter；5 be selection
Property absorber coatings；6 be heat-insulation layer；7 be water pump；8 be bosh；9 be ball valve；10 be cooling water accumulator tank；11 be protective layer；
T1 is the first temperature element；P1 is the first load cell；T2 is the second temperature element；P2 is the second load cell.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, the present invention is applied to the light spot energy measuring system of solar energy dish-style optically focused：Including cavity type heat absorber 1,
The inner chamber of cavity type heat absorber 1 is the photo-absorption region for being laid with cooling water flow conduits 2, and one is provided with the chamber of cavity type heat absorber 1
The individual opening 3 that incident light can be made to take in inner chamber；The water inlet of cooling water flow conduits 2 is connected with cooling water by pipeline and send water system
System, the delivery port of cooling water flow conduits 2 is connected with cooling water reclamation system by pipeline；Cooling water send water system to be provided with for surveying
Amount send the first load cell P1, temperature element T1 and the mass flow meter 4 of water；Cooling water reclamation system, which is provided with, to be used for
Measure the second load cell P2 and temperature element T2 of recycle-water.
In highly preferred embodiment of the present invention：Cavity type heat absorber 1 has the cooling in spherical structure cavity, the cavity for one
The light side of meeting of water flow passage 2 scribbles the coating for selective absorption 5 higher to sunshine absorptivity, and the backlight side of cooling water flow conduits 2 is set
It is equipped with heat-insulation layer 6 and protective layer 11.The outside wall surface material blackness of the protective layer 11 is less than or equal to 0.039.
Specifically, the cooling water of the present invention send water system also to include water pump 7, the water inlet of the water pump 7 passes through pipeline
Bosh 8 is connected with, the delivery port of water pump 7 is connected to the water inlet of mass flow meter 4, the quality by pipeline
The delivery port of flow measurement device 4 is connected to the water inlet of cooling water flow conduits 2 by pipeline；In water pump 7 and mass flow measurement
Ball valve 9 is provided with pipeline between device 4；Pipe between mass flow meter 4 and the water inlet of cooling water flow conduits 2
The first temperature element T1 and the first load cell P1 are disposed with road.Cooling water reclamation system includes cooling water accumulator tank
10, the delivery port of the cooling water flow conduits 2 is connected directly in cooling water accumulator tank 10 by pipeline, in cooling water accumulator tank 10
The second temperature element T2 and the second load cell P2 are disposed with pipeline between the delivery port of cooling water flow conduits 2.
In highly preferred embodiment of the present invention, cooling water flow conduits 2 of the invention are coil arrangement, it is ensured that the coil pipe of cooling water flow conduits 2 enters
Outlet is arranged on the both sides of opening 3.
Further, the present invention need to be identical with institute light-metering spot in the shape of the opening 3 of cavity type heat absorber 1, the area of opening 3
The 0.6% of generally less than or equal to whole chamber inner wall surface area；The coating for selective absorption 5 that interior cavity wall is scribbled, the coating
Absorptivity to sunshine is more than or equal to 0.92, and emissivity is less than or equal to 0.07；The total hardness 0mg/L of cooling water；Insulation
Thickness degree is less than or equal to 0.03W/ (m.k), appearance by+5 DEG C of settings of air's wet bulb temperature during test, insulation material thermal conductivity factor
Face radiation loss is less than or equal to hot spot gross energy 0.1%；Protective layer outside wall surface selects finishing polish type lead material, and blackness is less than
Or equal to 0.039, to reduce influence of the nature light absorbs to measurement accuracy.
Claims (9)
1. a kind of light spot energy measuring system suitable for solar energy dish-style optically focused, it is characterised in that including cavity type heat absorber
(1), the inner chamber of the cavity type heat absorber (1) is the photo-absorption region for being laid with cooling water flow conduits (2), in cavity type heat absorber (1)
Chamber provided with one can make incident light take in inner chamber opening (3)；The water inlet of the cooling water flow conduits (2) passes through pipe
Road is connected with cooling water and send water system, and the delivery port of the cooling water flow conduits (2) is connected with cooling water reclamation system by pipeline；
The cooling water send water system to be provided with the first load cell (P1), temperature element (T1) and mass flow for sending water for measuring
Measurement apparatus (4)；The cooling water reclamation system is provided with the second load cell (P2) and thermometric member for measuring recycle-water
Part (T2).
2. the light spot energy measuring system according to claim 1 suitable for solar energy dish-style optically focused, it is characterised in that institute
State cavity type heat absorber (1) has spherical structure cavity for one, and the light side of meeting for the cooling water flow conduits (2) laid in the cavity is scribbled pair
The higher coating for selective absorption of sunshine absorptivity, the backlight side of cooling water flow conduits (2) is provided with heat-insulation layer (6) and protection
Layer (11).
3. the light spot energy measuring system according to claim 2 suitable for solar energy dish-style optically focused, it is characterised in that institute
The outside wall surface material blackness for stating protective layer (11) is less than or equal to 0.039.
4. the light spot energy measuring system according to claim 1 suitable for solar energy dish-style optically focused, it is characterised in that institute
Stating cooling water send water system also to include water pump (7), and the water inlet of the water pump (7) is connected with bosh (8) by pipeline,
The delivery port of water pump (7) is connected to the water inlet of mass flow meter (4), the mass flow meter by pipeline
(4) delivery port is connected to the water inlet of cooling water flow conduits (2) by pipeline；In water pump (7) and mass flow meter (4)
Between pipeline on be provided with ball valve (9)；Between mass flow meter (4) and the water inlet of cooling water flow conduits (2)
The first temperature element (T1) and the first load cell (P1) are disposed with pipeline.
5. the light spot energy measuring system according to claim 1 suitable for solar energy dish-style optically focused, it is characterised in that institute
State cooling water reclamation system and include cooling water accumulator tank (10), the delivery port of the cooling water flow conduits (2) is direct by pipeline
It is connected in cooling water accumulator tank (10), the pipeline between cooling water accumulator tank (10) and the delivery port of cooling water flow conduits (2)
On be disposed with the second temperature element (T2) and the second load cell (P2).
6. the light spot energy measuring system according to claim 1 suitable for solar energy dish-style optically focused, it is characterised in that
The shape of the opening (3) of cavity type heat absorber (1) need to be identical with institute light-metering spot, and the area of opening (3) is less than or equal to whole cavate
The 0.6% of the chamber inner wall surface area of heat dump (1).
7. the light spot energy measuring system according to claim 2 suitable for solar energy dish-style optically focused, it is characterised in that institute
State coating for selective absorption (5) and 0.92 is more than or equal to the absorptivity of sunshine, emissivity is less than or equal to 0.07.
8. the light spot energy measuring system according to claim 2 suitable for solar energy dish-style optically focused, it is characterised in that institute
The insulation material thermal conductivity factor for stating heat-insulation layer (6) is less than or equal to 0.03W/ (m.k), and outer surface radiation loss is less than or equal to light
Spot gross energy 0.1%；The outside wall surface of protective layer (11) selects finishing polish type lead material.
9. a kind of light spot energy measuring system based on described in claim 1-8 any one suitable for solar energy dish-style optically focused
Measuring method, it is characterised in that：By the opening (3) of cavity type heat absorber (1) alignment institute light-metering spot, energy at hot spot hence into
Chamber, the light irradiation into chamber is absorbed on inwall by the coating for selective absorption (5) of inwall, and be then cooled water
Take away；The heat radiation of unabsorbed energy and inwall itself may proceed to carry out multiple reflections in intracavitary in the form of light, often reflect
Once it can all be absorbed once by internal face；Finally by the temperature difference and flow of measurement cooling water outlet and inlet, to calculate at hot spot
Energy, and send ball valve (9) in water system to adjust flow by cooling water, the survey of multiple flows carried out to same hot spot
Amount so that measurement result is more accurate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297379.0A CN106989524A (en) | 2017-04-28 | 2017-04-28 | A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297379.0A CN106989524A (en) | 2017-04-28 | 2017-04-28 | A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused |
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| Publication Number | Publication Date |
|---|---|
| CN106989524A true CN106989524A (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710297379.0A Pending CN106989524A (en) | 2017-04-28 | 2017-04-28 | A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449511A (en) * | 2017-09-14 | 2017-12-08 | 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 and method |
| 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 |
| 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
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449511A (en) * | 2017-09-14 | 2017-12-08 | 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 and method |
| CN107449511B (en) * | 2017-09-14 | 2023-09-22 | 中国能源建设集团陕西省电力设计院有限公司 | Facula energy closed type hydraulic medium measuring system and method |
| 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 |
| 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 |
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