CN209485661U - A kind of device for the test of parabolic trough type solar thermal collector efficiency - Google Patents
A kind of device for the test of parabolic trough type solar thermal collector efficiency Download PDFInfo
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- CN209485661U CN209485661U CN201920104299.3U CN201920104299U CN209485661U CN 209485661 U CN209485661 U CN 209485661U CN 201920104299 U CN201920104299 U CN 201920104299U CN 209485661 U CN209485661 U CN 209485661U
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Abstract
The utility model discloses a kind of devices for the test of parabolic trough type solar thermal collector efficiency.Plate heat exchanger connects oil circulating pump, and oil circulating pump is connected to the input terminal of groove type heat collector through vortex-shedding meter, heat transfer oil flow regulating valve, and groove type heat collector connects plate heat exchanger through top petrol tank；Plate heat exchanger is connected with cooling water tank, and cooling water tank output end is connected to plate heat exchanger through water circulating pump, cooling water flow regulating valve, electromagnetic flowmeter；Cooling water enters plate heat exchanger, and cooling water flows back to cooling water tank after taking away heat.The utility model can be used in carrying out the test of parabolic trough type solar thermal collector efficiency, be applicable in the test of high optically focused slot type solar thermal collector efficiency under weather complicated and changeable.
Description
Technical field
The utility model relates to a kind of devices in parabolic trough type solar linear optically focused field, especially a kind of to be used for parabolic
The device of trough type solar heat-collector efficiency test.
Background technique
It is planned according to solar thermal utilization way for development line chart, the elementary object of Chinese application of solar energy development are as follows: the year two thousand twenty,
The year two thousand thirty and the year two thousand fifty, application of solar energy will substitute fossil energy more than 1.5 hundred million, 3.1 hundred million and 8.6 hundred million tons standard coals respectively,
Middle offer electric power is respectively 150,000,000,000,510,000,000,000 and 21,00000000000 kilowatt hours.Solar thermal utilization development course concrete form:
The application of solar water heating system will be mainstream applications mode, about 60% construction and installation solar water heating system before the year two thousand twenty；
Solar heating simultaneously, refrigeration system application are fast-developing, and 1% or so overall floorage is by applied solar energy heating, refrigeration
System；To the year two thousand thirty, solar heating and solar energy industrial or agricultural heat utilization will be increased rapidly；In terms of medium-long term, to the year two thousand fifty, too
Positive energy medium temperature heat utilization is expected to play huge energy-saving and emission-reduction effect in industrial or agricultural field.
Paraboloid trough type solar heat-collector by do one-dimensional single-shaft-rotation East and West direction or north-south movement paraboloid
Flute profile investigation on several focus reflectors converges sunlight to form a focal line, and thermal-collecting tube is placed at focal line, the sunray heating of convergence
Heat-transfer working medium conduction oil in thermal-collecting tube, realization convert solar energy into thermal energy.It is widely used in solar energy thermal-power-generating, too
The technical fields such as positive energy sea water desalination, solar heat refrigeration, solar hydrogen making and industrial process heat.Efficiency is paraboloid trough type
One of key technology evaluation index of solar thermal collector performance test, be slot type collecting system commercialization capital operation in measure
It is melted into the calculation basis of the economic indicators such as this and capital income.There has been no multiple for solar linear optically focused scene dynamic at present
The specific standards of groove type heat collector efficiency test device under miscellaneous change condition, including international or China national grade standard.Especially
It is as the Devoting Major Efforts To Developing of national clean energy resource, the potentiality of slot type photo-thermal power generation are further excavated, market will expand rapidly, because
This demand to groove type heat collector efficiency test device and method is increasingly strong, and live dynamic moving state test method is also
The main trend of performance test.
National standard GB/T 4271-2007 proposes a kind of dynamic test for being applicable to most of collector efficiencies.The standard
Dynamic testing method include incidence angle amendment influence, will directly radiation and scattering radiation influence separately consider, it is also considered that
Include the influence of wind speed and environment temperature to environmental factor, allows also for the influence of effective heat capacity.But groove type solar
Heat collector belongs to linear concentrator field of solar energy, and the scattering in national standard GB/T4271-2007 influences have greatly uncertainty,
The solar incident angle amendment relationship in national standard is suitable for the heat collector of fixed angle simultaneously, and groove type solar has twin shaft or list
Axle tracing system, therefore angle of incidence of sunlight amendment is equally not applicable in trough type solar heat-collector.Groove type solar engineering
Under service condition, collection thermal process is completed by uniaxiality tracking sunlight mostly.Moreover, it is different from the test condition in laboratory, it is existing
Test condition often lack it is corresponding adjust and high precision control apparatus make the inlet temperature of groove type heat collector stablize 2% with
It is interior.
Utility model content
In order to solve the problems, such as background technique, it is conduction oil that the utility model proposes a kind of for heat-transfer working medium
Device for the test of in-service parabolic trough type solar thermal collector efficiency.Utility model device is suitable for field condition work item
Groove type heat collector under part can be used for realizing the continuous survey to test coefficient under groove type heat collector tracing collection state for a long time
Examination, and high request, strong operability are not done to its test equipment precision, it is easy to accomplish.
The technical solution adopted in the utility model is:
Device includes groove type heat collector, oil circulating pump, top petrol tank, water circulating pump, cooling water tank, cooling water flow adjusting
Valve, electromagnetic flowmeter, plate heat exchanger, vortex-shedding meter and heat transfer oil flow regulating valve；One lateral line of plate heat exchanger it is defeated
Outlet is connected to the input terminal of oil circulating pump, and the output end of oil circulating pump is successively through vortex-shedding meter, heat transfer oil flow regulating valve
It is connected to the input terminal of groove type heat collector, the output end of groove type heat collector is connected to one lateral line of plate heat exchanger through top petrol tank
Input terminal；The output end of another lateral line of plate heat exchanger is connected with the input terminal of cooling water tank, cooling water tank output end according to
The secondary input terminal that another lateral line of plate heat exchanger is connected to through water circulating pump, cooling water flow regulating valve, electromagnetic flowmeter；Institute
It is disposed with anemobiagraph in the air environment around groove type heat collector stated, and is no more than within the scope of 5 meters apart from groove type heat collector
Place pyrheliometer.
The first temperature sensor, institute are provided in pipeline between the output end and top petrol tank of the groove type heat collector
The cooling water tank stated is equipped with second temperature sensor, is arranged in the pipeline between the electromagnetic flowmeter and plate heat exchanger
There is third temperature sensor, is provided in the pipeline between the heat transfer oil flow regulating valve and the input terminal of groove type heat collector
4th temperature sensor is disposed with the 5th temperature sensor in the air environment around the groove type heat collector.
The plate heat exchanger is placed in thermal insulation separation hot tank.
The groove type heat collector is placed in above slot type mirror surface, and slot type mirror surface is paraboloid, and the sun issues too
Positive incident ray, solar incident ray are incident on slot type mirror surface and are reflected on groove type heat collector.
The slot type mirror surface connects tracking axis, and tracking axis connection tracks driving motor.
For one lateral line of plate heat exchanger using heat-transfer working medium as flow media, another lateral line is stream with cooling medium
Dynamic medium.
It is not less than 300W/m in the direct irradiation level of the sun2, in the case that ambient air velocity value is not more than 4m/s, work of conducting heat
The volume flow of matter is regarded as by the flowing of heat collector heat-transfer working medium in turbulence state, and heat-transfer working medium inlet temperature is surveyed in heating
Climbing speed is not more than 2 DEG C/min during amount, carries out the test of parabolic trough type solar thermal collector efficiency.
Groove type heat collector test device in the utility model can operation, operability under tracking mode for a long time
By force, it is suitble to field condition complex work condition, in the operation for not interfering slot type collecting system itself,
The beneficial effects of the utility model are:
1. utility model device can be used to more accurately be directed to the efficiency test of parabolic trough type solar thermal collector, it is applicable in
The test of high optically focused slot type solar thermal collector efficiency under weather complicated and changeable.
2. the present invention is recycled using double loop, double-work medium design.The cycle fluid of double loop circulation can use always, save
Resource.In plate heat exchanger two sides, side uses heat-transfer working medium conduction oil and thermal conductive oil pipeline, by parabolic trough type solar energy collection
It can get higher outlet temperature after hot device thermal-arrest, heat utilization range expands.The other side can be reduced quickly using Water-cooling circulating
Test temperature, convenient for test, controllability is strong.
Detailed description of the invention
Fig. 1 is the schematic device of the utility model；
Fig. 2 is that sunray is incident on mirror surface schematic diagram.
In Fig. 1: 1, direct pyranometer；2, groove type heat collector；3, the first temperature sensor；4, oil circulating pump；5, high
Position fuel tank；7, water circulating pump；9, second temperature sensor；10, cooling water tank；11, cooling water flow regulating valve；12, electromagnetic current
Meter；13, third temperature sensor；14, plate heat exchanger；15, thermal insulation separation hot tank；16, vortex-shedding meter；17, thermally conductive oil stream
Adjustable valve；18, the 4th temperature sensor；19, anemobiagraph；20, the 5th temperature sensor；21, the sun；22, sun incident light
Line；23, slot type mirror surface；24, tracking axis；25, slot type mirror surface normal direction；26, solar incident ray and slot type are anti-
Penetrate the angle in mirror normal direction.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the utility model specific implementation includes groove type heat collector 2, oil circulating pump 4, top petrol tank 5, circulation
Water pump 7, cooling water tank 10, cooling water flow regulating valve 11, electromagnetic flowmeter 12, plate heat exchanger 14,16 and of vortex-shedding meter
Heat transfer oil flow regulating valve 17；Plate heat exchanger 14 is placed in thermal insulation separation hot tank 15, the output of 14 1 lateral line of plate heat exchanger
End is connected to the input terminal of oil circulating pump 4, and the output end of oil circulating pump 4 is successively adjusted through vortex-shedding meter 16, heat transfer oil flow
Valve 17 is connected to the input terminal of groove type heat collector 2, and the output end of groove type heat collector 2 is connected to plate heat exchanger through top petrol tank 5
The input terminal of 14 1 lateral lines；The output end of another lateral line of plate heat exchanger 14 is connected with the input terminal of cooling water tank 10, cold
But 10 output end of water tank is successively connected to plate heat exchanger through water circulating pump 7, cooling water flow regulating valve 11, electromagnetic flowmeter 12
The input terminal of 14 another lateral lines.
As shown in Fig. 2, being provided with the first temperature biography in pipeline between the output end and top petrol tank 5 of groove type heat collector 2
Sensor 3, cooling water tank 10 are equipped with second temperature sensor 9, set in the pipeline between electromagnetic flowmeter 12 and plate-type heat-exchange 14
It is equipped with third temperature sensor 13, is arranged in the pipeline between heat transfer oil flow regulating valve 17 and the input terminal of groove type heat collector 2
There is the 4th temperature sensor 18, the 5th temperature sensor 20 is disposed in the air environment around groove type heat collector 2.
Anemobiagraph 19 is disposed in air environment around groove type heat collector 2.Direct pyranometer 1 be installed and connected in away from
5 meters from parabolic trough type solar thermal collector distant places, and be detected solar energy not influenced by the factor of blocking.
As shown in Fig. 2, groove type heat collector 2 is placed in 23 top of slot type mirror surface, slot type mirror surface 23 is paraboloid, too
Sun 21 issues solar incident ray 22, and solar incident ray 22 is incident on slot type mirror surface 23 and is reflected on groove type heat collector 2,
The thermal energy that solar radiation energy is converted to heat-transfer working medium is acquired by groove type heat collector 2.Slot type mirror surface normal direction 25
The angle 26 of solar incident ray and slot type mirror surface normal direction is formed between solar incident ray 22.
Slot type mirror surface 23 connects tracking axis 24, the connection tracking driving motor of tracking axis 24, by tracking driving motor band
Motion tracking axis 24 rotates and then drives the rotation adjustment pose of slot type mirror surface 23, so that the 23 positive reflection sun of slot type mirror surface
Light, and then adapt to the needs of different sun angular.
For 14 1 lateral line of plate heat exchanger using heat-transfer working medium as flow media, another lateral line is flowing with water cooling medium
Medium.
The course of work of utility model device is as follows:
Conduction oil is flowed out from plate heat exchanger 14 by pipeline, enters oil circulating pump 4 by pipeline, is flowed from oil circulating pump 4
Conduction oil out enters groove type heat collector 2 using heat collector import, then passes through thermal-arrest by heat transfer oil flow regulating valve 17
Device outlet flow back into plate heat exchanger 14；
Cooling water is flowed out by cooling water tank 10, and the water circulating pump 7 of cooling water is entered via filter, and water circulating pump 7 exports
Cooling water is arranged cooling water flow regulating valve 11 according to the requirement of amount of cooling water to allow cooling water to enter plate heat exchanger 14, passes through
Heat transfer process flows back to cooling water tank 10 after taking away heat.
The 4th temperature sensor 18 and and its neighbouring pipeline outer layer peace in specific implementation, for heat collector inlet and outlet
Heat insulation layer is filled, to guarantee test accuracy and destruction caused by avoiding because of environmental factor.
By being installed on the heat-conducting oil pipes road between heat transfer oil flow regulating valve 17 and the heat collector import of groove type heat collector 2
The measurement of vortex-shedding meter 16 obtain and flow through the volume flow of conduction oil, by close to 2 heat collector import of groove type heat collector
The 4th temperature sensor 18 measurement of place installation in 0.5m obtains the inlet temperature of heat-transfer working medium, by close to slot type thermal-arrest
2 heat collector of device export 0.5m in place installation the first temperature sensor 3 measurement obtain heat-transfer working medium outlet temperature, by
The test of anemobiagraph 19 that groove type heat collector 2 is nearby installed obtains ambient wind velocity, is tested by pyrheliometer 1 and obtains sun normal direction
Direct irradiation level (DNI) obtains the environment temperature of surrounding air by the 5th temperature sensor 20 measurement under installation ambient enviroment
Degree；The cooling water temperature obtained in cooling water tank 10 is measured by second temperature sensor 9；It is surveyed by third temperature sensor 13
Amount obtains the temperature of plate heat exchanger water side-entrance water, adjusts cooling water flow according to the temperature of plate heat exchanger water side-entrance water
The size of adjustable valve 11 keeps cooling effect preferable.
It include flowmeter, heat collector inlet temperature sensor and its heat insulation layer, collection in the utility model specific implementation
Hot device outlet temperature sensor and its heat insulation layer, anemobiagraph, pyrheliometer and groove type solar tracker and surrounding ring
Border temperature sensor.Flowmeter is mounted on the pipe between the heat transfer oil flow regulating valve of conduction oil cyclic part and heat collector import
On the road, heat collector inlet temperature sensor is mounted on close on the pipeline in the import 0.5m of groove type heat collector and in this section of pipeline
Upper installation heat insulation layer, heat collector outlet temperature sensor are mounted on close on the pipeline in the outlet 0.5m of groove type heat collector
And install heat insulation layer additional on this section of pipeline, anemobiagraph, pyrheliometer table and groove type solar tracker and ambient enviroment
Temperature sensor is all mounted on the place near groove type heat collector.
Heat insulation layer is the heat-preservation cotton of high temperature resistant heat insulation, and aluminium foil adhesive plaster sunlight reflection and week are wrapped up outside it
Influence of the collarette border to pipeline.
It is as follows using the embodiments of the present invention test process:
Experimental site guarantees Adjacent Buildings to the shaded coefficient of groove type solar collecting system less than 15 °；If test day
Phase is fine, then test effect is more preferable.The glass transmission cover pipe surface of evacuated collector tube should be cleaned before test；To guarantee system
Safety, it is ensured that conduction oil cyclic part and circulating part point can work normally before test；Test needs to preheat one simultaneously
Test period about 15 minutes.
1) using conduction oil as heat-transfer working medium, the oil circulating pump 4 of conduction oil is opened, so that conduction oil flows through groove type heat collector 2
With plate heat exchanger 7, flow is needed to adjust heat transfer oil flow regulating valve 17 according to test；
2) using cooling water as cooling medium, the water circulating pump 7 of cooling water is opened, cooling water enters plate heat exchanger 7, cooling
Water flows back to cooling water tank 10 after taking away heat, so that conduction oil is close to environment temperature or the specific temperature of needs；
3) groove type heat collector 2 is worked under uniaxiality tracking in the state for tracking sunlight, too by the acquisition of groove type heat collector 2
The thermal energy that positive energy radiation energy is converted to conduction oil carries out heating test process, conduction oil expanded by heating, into top petrol tank
5；
4) according to the requirement of conduction oil cyclic part amount of cooling water, cooling water flow regulating valve 11 is adjusted, to guarantee slot type collection
Hot device 2 heats up during test process, and heat conductive oil inlet temperature rate-of-rise should be not more than 2 DEG C/min；
5) heat up in test process, test and record upload the thermally conductive oil volumetric flow rates acquired by vortex-shedding meter 16, by
The inlet temperature of the heat-transfer working medium conduction oil of 4th temperature sensor 18 acquisition, the heat transfer work acquired by the first temperature sensor 3
The outlet temperature of matter conduction oil, the environment temperature acquired by the ambient wind velocity of anemobiagraph acquisition, by the 5th temperature sensor 20, by
The direct spoke intensity of the sun that the acquisition of pyrheliometer 1 obtains adds known thermally conductive oil density, conduction oil specific heat capacity and slot type
23 daylighting area of mirror surface is further processed the efficiency for obtaining trough type solar heat-collector by physical quantity obtained above.
Claims (6)
1. a kind of device for the test of parabolic trough type solar thermal collector efficiency, it is characterised in that: including groove type heat collector
(2), oil circulating pump (4), top petrol tank (5), water circulating pump (7), cooling water tank (10), cooling water flow regulating valve (11), electricity
Magnetic flowmeter (12), plate heat exchanger (14), vortex-shedding meter (16) and heat transfer oil flow regulating valve (17)；Plate heat exchanger
The output end of (14) one lateral lines is connected to the input terminal of oil circulating pump (4), and the output end of oil circulating pump (4) is successively through vortex street stream
Meter (16), heat transfer oil flow regulating valve (17) are connected to the input terminal of groove type heat collector (2), the output of groove type heat collector (2)
End is connected to the input terminal of (14) one lateral line of plate heat exchanger through top petrol tank (5)；Plate heat exchanger (14) another lateral line
Output end connected with the input terminal of cooling water tank (10), cooling water tank (10) output end is successively through water circulating pump (7), cooling water
Flow control valve (11), electromagnetic flowmeter (12) are connected to the input terminal of plate heat exchanger (14) another lateral line；The slot
It is disposed with anemobiagraph (19) in air environment around formula heat collector (2), and is being no more than 5 meters of models apart from groove type heat collector (2)
Enclose interior placement pyrheliometer (1).
2. a kind of device for the test of parabolic trough type solar thermal collector efficiency according to claim 1, feature exist
In: the first temperature sensor is provided in the pipeline between the output end and top petrol tank (5) of the groove type heat collector (2)
(3), the cooling water tank (10) is equipped with second temperature sensor (9), the electromagnetic flowmeter (12) and plate-type heat-exchange
It is provided in pipeline between device (14) third temperature sensor (13), the heat transfer oil flow regulating valve (17) and slot type collection
The 4th temperature sensor (18) is provided in pipeline between the input terminal of hot device (2), around the groove type heat collector (2)
The 5th temperature sensor (20) is disposed in air environment.
3. a kind of device for the test of parabolic trough type solar thermal collector efficiency according to claim 1, feature exist
In: the plate heat exchanger (14) is placed in thermal insulation separation hot tank (15).
4. a kind of device for the test of parabolic trough type solar thermal collector efficiency according to claim 1, feature exist
In: the groove type heat collector (2) is placed in above slot type mirror surface (23), and slot type mirror surface (23) is paraboloid, the sun
(21) solar incident ray (22) are issued, solar incident ray (22) is incident on slot type mirror surface (23) and is reflected into slot type thermal-arrest
On device (2).
5. a kind of device for the test of parabolic trough type solar thermal collector efficiency according to claim 4, feature exist
In: the slot type mirror surface (23) connects tracking axis (24), tracking axis (24) connection tracking driving motor.
6. a kind of device for the test of parabolic trough type solar thermal collector efficiency according to claim 3, feature exist
In: for (14) one lateral line of plate heat exchanger using heat-transfer working medium as flow media, another lateral line is stream with cooling medium
Dynamic medium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920104299.3U CN209485661U (en) | 2019-01-22 | 2019-01-22 | A kind of device for the test of parabolic trough type solar thermal collector efficiency |
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| CN201920104299.3U CN209485661U (en) | 2019-01-22 | 2019-01-22 | A kind of device for the test of parabolic trough type solar thermal collector efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855843A (en) * | 2019-01-22 | 2019-06-07 | 中国计量大学 | Parabolic trough type solar thermal collector efficiency dynamic checkout unit and method |
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2019
- 2019-01-22 CN CN201920104299.3U patent/CN209485661U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855843A (en) * | 2019-01-22 | 2019-06-07 | 中国计量大学 | Parabolic trough type solar thermal collector efficiency dynamic checkout unit and method |
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