CN105387999A - Method for testing optical efficiency of slot type solar thermal collector - Google Patents
Method for testing optical efficiency of slot type solar thermal collector Download PDFInfo
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- CN105387999A CN105387999A CN201510825493.7A CN201510825493A CN105387999A CN 105387999 A CN105387999 A CN 105387999A CN 201510825493 A CN201510825493 A CN 201510825493A CN 105387999 A CN105387999 A CN 105387999A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
The invention provides a method for testing optical efficiency of a slot type solar thermal collector. The method utilizes a working platform to carry out an optical efficiency test, and includes the following steps: a slot type solar thermal collector to be detected is installed in a double-shaft rotating tracking sun subsystem; a working medium loop subsystem is connected with a thermal collecting pipe of the slot type solar thermal collector to be detected, thereby forming a test cycle working medium loop; the double-shaft rotating tracking sun subsystem adjusts the inclination angle and the azimuth angle of the slot type solar thermal collector to be detected, thereby realizing two-dimensional tracking of the sun; and an optical efficiency test is performed on the slot type solar thermal collector to be detected. Through two-dimensional solar energy tracking and temperature adjustment, the method for testing the optical efficiency of the slot type solar thermal collector can effectively avoid influence of cosine loss and radiation loss on a solar heat collection process, improves detection precision of the optical efficiency of the slot type solar thermal collector, and adopts the idea of universal design and a mechanical structure, can satisfying detection requirements of slot type solar thermal collectors of different models and sizes, and has relatively good adaptability.
Description
Technical field
The present invention relates to the Performance Detection technical field of solar light-condensing and heat-collecting device, particularly relate to a kind of method of testing trough type solar heat-collector optical efficiency.
Background technology
Under the background of rapid economic development, the demand of the mankind to the energy is increasing, and the fossil fuel such as coal, oil and natural gas consumes in a large number, the sharply reduction being not only energy resources reserves thereupon brought, also serious environmental pollution will be produced, especially a large amount of CO
2isothermal chamber gas purging will have influence on the ecologic equilibrium in the whole world.
The total output of primary energy of China rises to 29.7 hundred million tons of standard coal equivalents of 2010 from 13.5 hundred million tons of standard coal equivalents of 2000, amplification reaches 120%, year primary energy consumption amount is also risen to 32.5 hundred million tons of standard coal equivalents of 2010 by 14.6 hundred million tons of standard coal equivalents of 2000, total amount has turned over one times, adds 122.6%.Especially it is noted that the dependence on foreign countries for oil to China in 2012 reaches 56.4%.In the face of growing demand for energy, while raising energy utilization rate, the scale also should enriching existing regenerative resource utilizes.
On the other hand, the solar energy resources of China is very abundant, year solar radiation value be about 1050 ~ 2450kWh (m
2a), 1050kWh (m is greater than
2a) area accounts for more than 96% of area.The annual day solar radiation quantity of China is 180W/m
2, average day solar radiation quantity distribution trend to show as Xi Gaodong low.In west areas such as the Tibet of China, Qinghai and Xinjiang, solar energy resources is very abundant, and the sunshine-duration in year, especially more than 3000 hours, belongs to one of abundant area of world's solar energy resources.
Because the irradiation intensity of sun power is lower, recycle after need carrying out optically focused to sun power, to obtain the heat energy of higher temperature, this process need is by focusing solar collector.Focusing solar collector in the mode of reflection or refraction, concentrated for the solar light projecting light mouth being projected on absorber is formed focal plane by condenser, and luminous energy is converted to heat energy by absorber, then is taken away by absorbing medium.Because the energy flux density of receiver is very high, the temperature more much higher than ordinary flat heat collector etc. can be reached, more favorably condition can be provided for solar energy thermal-power-generating and solar heat chemical utilization.
Current, large-scale solar-energy light collector has been applied in the Photospot solar thermo-power station of commercialization or show-how, condenser system mainly comprises moveable catoptron and solar tracking apparatus, parabolic trough type, linear Fresnel formula, tower and dish-style can be divided into according to optically focused type, wherein first two adopts line spot mode, then both adopt some spot mode, in focusing ratio and heat-collecting temperature, there is larger difference.These condenser systems have been applied in the commercialization of MW level or show-how solar heat power generation system at present, utilize beam condensing unit that solar radiation can be converted into middle high temperature solar thermal energy, for heating heat-conducting medium (air, water, water vapor, conduction oil or melt salt etc.), and then to be heated by heat interchanger and to produce the work done working medium such as high-temperature steam, produce electric energy finally by traditional hot merit thermodynamic cycle (Rankine, Bretton or Stirling cycle).Worldwide, the Demonstration Station of existing multiple employing slot type and tower type solar generation technology is put into commercial operation, and the highest with the degree of ripeness of groove type solar light and heat collection technology, and device fabrication cost also will continue to reduce.
Current, trough type solar power generation station is still in the situation of sustainable growth, while improving groove type solar heat collection technology performance energetically, also enough attention should be caused to the Performance Detection of trough type solar heat-collector, only has characteristic detection technique being incorporated actual moving process, improve accuracy of detection simultaneously, the utility of sun power can be improved effectively, and reduce production cost.
Summary of the invention
(1) technical matters that will solve
In view of this, fundamental purpose of the present invention is to provide a kind of method of testing of testing trough type solar heat-collector optical efficiency, for checking the optical property of trough type solar heat-collector, to solve the problem that current optical Efficiency test method is loaded down with trivial details and measuring accuracy is lower.
(2) technical scheme
According to an aspect of the present invention, provide a kind of method of testing trough type solar heat-collector optical efficiency, the method utilizes a workbench to carry out optical efficiency test to trough type solar heat-collector, described workbench comprises: dual-axis rotation follows the tracks of sun subsystem 90 and actuating medium loop subsystem, trough type solar heat-collector 10 to be detected comprises parabolic concentration catoptron 11 and thermal-collecting tube 12, and the method comprises: steps A: trough type solar heat-collector 10 to be detected is arranged on described dual-axis rotation and follows the tracks of in sun subsystem 90; Step B: described actuating medium loop subsystem is connected by the thermal-collecting tube 12 of working medium pipeline and trough type solar heat-collector to be detected 10, composition test loop working medium loop; Step C: described dual-axis rotation follows the tracks of inclination angle and the position angle that sun subsystem 90 adjusts trough type solar heat-collector 10 to be detected, realizes the two-dimensional tracking to the sun; Step G: optical efficiency test is carried out to detection trough type solar heat-collector 10.
(3) beneficial effect
Can find out from technique scheme, the present invention has following beneficial effect:
(1) by measuring sun power elevation angle and position angle, and the actual inclination angle of trough type solar heat-collector to be detected and position angle, inclination angle is carried out to trough type solar heat-collector to be detected and azimuthal two dimension accurately controls, thus evade cosine losses that solar incident angle causes to the impact of solar energy heating process, can detect the optical efficiency of trough type solar heat-collector more exactly;
(2) by precisely controlling the refrigerating capacity of refrigeration machine, the flow velocity of working medium pump, the qualitative temperature of the actuating medium flowing through trough type solar heat-collector to be detected is made to equal environment temperature, to evade the impact of radiation loss on solar energy heating process, can detect the optical efficiency of trough type solar heat-collector more exactly;
(3) by the adjustable mechanical structure of adjustment workbench, can test the trough type solar heat-collector of different model and size, there is the advantage that applicability is wide;
(4) this method technology maturity is higher, can be widely applied preferably.
Accompanying drawing explanation
Fig. 1 is the structural representation of the workbench for embodiment of the present invention method testing trough type solar heat-collector optical efficiency;
Fig. 2 is the structural representation of the dual-axis rotation tracking sun subsystem for the workbench of embodiment of the present invention method testing trough type solar heat-collector optical efficiency;
Fig. 3 is the partial enlarged drawing following the tracks of sun subsystem for a kind of dual-axis rotation testing the workbench of trough type solar heat-collector optical efficiency of embodiment of the present invention method;
Fig. 4 is another partial enlarged drawing following the tracks of sun subsystem for a kind of dual-axis rotation testing the workbench of trough type solar heat-collector optical efficiency of embodiment of the present invention method;
Fig. 5 is a kind of method of testing trough type solar heat-collector optical efficiency according to the embodiment of the present invention.
[symbol description]
10-trough type solar heat-collector to be detected
11-parabolic concentration catoptron, 12-thermal-collecting tube
20-actuating medium refrigeratory
30-working medium pump
40-refrigeration machine
50-condenser
60-sun power irradiation intensity and angle detection module
70-data collection and analysis and control terminal
80-sensor group
81-first temperature signal collection element
82-second temperature signal collection element
83-the 3rd temperature signal collection element
84-flow signal acquisition element
90-dual-axis rotation follows the tracks of sun subsystem
91-rotating shaft support bar 92-first bracing frame 92 '-the second bracing frame
93-collector tube holder 94-mirror support frame
95-is rotated in deceleration driving mechanism 96-bottom platform
97-Plane Rotation slide rail
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 is the structural representation of the workbench for embodiment of the present invention method testing trough type solar heat-collector optical efficiency.The method of test trough type solar heat-collector optical efficiency of the present invention is based on the workbench of Fig. 1.
This workbench comprises: dual-axis rotation follows the tracks of sun subsystem, actuating medium loop subsystem, refrigeration system, data collection and analysis and control system.Method of the present invention utilizes the optical efficiency of this workbench to trough type solar heat-collector to detect.
Wherein, trough type solar heat-collector 10 to be detected is arranged on dual-axis rotation and follows the tracks of sun subsystem 90, dual-axis rotation follows the tracks of the two-dimensional tracking that sun subsystem 90 realizes trough type solar heat-collector to be detected 10 pairs of sun power, trough type solar heat-collector 10 to be detected is connected with the pipeline of actuating medium loop subsystem, actuating medium refrigeratory 20 is connected in the pipeline of actuating medium loop subsystem, it coordinates with refrigeration system and carries out heat interchange, data collection and analysis and control system acquisition parameter control system are run, calculate the optical efficiency of trough type solar heat-collector 10 to be detected.
Fig. 2 is the structural representation of the dual-axis rotation tracking sun subsystem for the workbench of embodiment of the present invention method testing trough type solar heat-collector optical efficiency.
Dual-axis rotation is followed the tracks of sun subsystem 90 and is comprised rotating shaft support bar 91, bracing frame 92, collector tube holder 93, mirror support frame 94, bottom platform 96 and plane rotation slide rail 97, for realizing the two-dimensional tracking of trough type solar heat-collector to be detected 10 pairs of sun power.
Trough type solar heat-collector 10 to be detected comprises: parabolic concentration catoptron 11 and thermal-collecting tube 12.
It is Plane Rotation slide rail 97 that dual-axis rotation is followed the tracks of bottom sun subsystem 90, Plane Rotation slide rail 97 has annular groove, and be bottom platform 96 at an upper portion thereof, carriage is equipped with in the below of bottom platform 96, carriage by inlay card in the annular groove of Plane Rotation slide rail 97, and can slide anteroposterior.
Above-mentioned carriage can be pulley, and above-mentioned rotating driving device can be motor.
First bracing frame 92 and the second bracing frame 92 ' lay respectively at the dual-side mid point of bottom platform 96, can adjust the height of a bracing frame 92 and the second bracing frame 92 ' according to the physical dimension of trough type solar heat-collector 10 to be detected.
As shown in Figure 3, the two ends of rotating shaft support bar 91 are positioned on the first bracing frame 92 and the second bracing frame 92 ', rotating shaft support bar 91 evenly arranges the vertical collector tube holder of many tools 93, two tool collector tube holder are wherein positioned at the two ends of rotating shaft support bar 91, thermal-collecting tube 12 is arranged in collector tube holder 93, the both sides of rotating shaft support bar 91 are mirror support frame 94, mirror support frame 94 is in order to support and fixing parabolic concentration catoptron 11, it adopts adjustable physical construction, appropriateness can be carried out according to the physical dimension of parabolic concentration catoptron 11 to regulate, collector tube holder 93 adopts telescopic physical construction, focal length for the parabolic concentration catoptron 11 of different size regulates.
Rotating shaft support bar 91 is rotary structure, by rotating shaft support bar 91, realizes the adjustment to trough type solar heat-collector 10 inclination angle to be detected.
Actuating medium loop subsystem comprises working medium pump 30, actuating medium refrigeratory 20, working medium pipeline and other heat exchange and pipeline.Please refer to Fig. 1, actuating medium is pumped in trough type solar heat-collector 10 to be detected through working medium pump 30 and heats, then enter actuating medium refrigeratory 20, actuating medium refrigeratory 20 coordinates with refrigeration system and cools actuating medium, and cooled actuating medium is delivered in trough type solar heat-collector 10 to be detected through working medium pump 30 again and circulated.
Refrigeration system comprises refrigeration machine 40 and condenser 50, refrigeration machine 40 adopts compression or sorption type refrigerating technology, the low temperature chilled water that the actuating medium discharged from trough type solar heat-collector 10 to be detected and refrigeration machine 40 are produced carries out heat interchange, to reach cooling effect actuating medium refrigeratory 20.
Please refer to Fig. 1, data collection and analysis and control system comprise: the driving mechanism 95 that is rotated in deceleration, the second angular transducer being arranged on rotating shaft support bar 91, the rotating driving device being arranged on the central lower of bottom platform 96 and the first angular transducer, sensor group 80, sun power irradiation intensity and angle detection module 60 and data collection and analysis and control terminal 70, calculate for realizing the automatic measurement of workbench, Automated condtrol and data analysis.
The driving mechanism 95 that is rotated in deceleration is positioned on the second bracing frame 92 ', and is connected with the rotating shaft support bar 91 on this bracing frame.The driving mechanism 95 that is rotated in deceleration comprises motor and reductor etc., and it can rotate by drive shaft support bar 91.
Rotating driving device drives bottom platform 96 to carry out Plane Rotation.
The true bearing angle of trough type solar heat-collector 10 to be detected measured by first angular transducer.
The actual inclination angle of trough type solar heat-collector 10 to be detected measured by second angular transducer.
Sun power irradiation intensity and angle detection module 60, it measures sun power irradiation intensity in real time, and monitors elevation angle and the position angle of sun power.Wherein, sensor group 80 comprises: the first temperature signal collection element 81, second temperature signal collection element 82, the 3rd temperature signal collection element 83, flow signal acquisition element 84.
First temperature signal collection element 81 is arranged on the entrance point of trough type solar heat-collector 10 to be detected, second temperature signal collection element 82 is arranged on the endpiece of trough type solar heat-collector 10 to be detected, 3rd temperature signal collection element 83 is arranged on the endpiece of actuating medium refrigeratory 20, and flow signal acquisition element 84 is arranged on the entrance point at trough type solar heat-collector 10 to be detected.The flow information of the temperature information that these three temperature signal collection elements gather and the collection of flow signal acquisition element is received by data collection and analysis and control terminal 70.
In this workbench, except for testing trough type solar heat-collector optical efficiency, by replacing trough type solar heat-collector 10 to be detected, also can be applicable to other one-dimensional line-focusing solar light-condensing and heat-collecting devices such as test linear Fresnel.
Fig. 4 is a kind of schematic diagram testing the method for trough type solar heat-collector optical efficiency of the present invention.
The method comprises:
Steps A: trough type solar heat-collector 10 to be detected is arranged on described dual-axis rotation and follows the tracks of in sun subsystem 90;
Steps A comprises further:
Sub-step A1: the height of adjustment bracing frame 92 makes it adapt to the physical dimension of trough type solar heat-collector 10 to be detected;
Sub-step A2: the shape of adjustment mirror support frame 94 makes it adapt to the physical dimension of trough type solar heat-collector 10 to be detected;
Sub-step A3: the height of adjustment thermal-collecting tube bracing frame 93 makes solar focusing ray cast on thermal-collecting tube 12.
Step B: described actuating medium loop subsystem is connected by the thermal-collecting tube 12 of working medium pipeline and trough type solar heat-collector to be detected 10, composition test loop working medium loop;
Step C: described dual-axis rotation follows the tracks of inclination angle and the position angle that sun subsystem 90 adjusts trough type solar heat-collector 10 to be detected, realizes the two-dimensional tracking to the sun;
Step D: the true bearing angle receiving above-mentioned sun power position angle, trough type solar heat-collector to be detected 10, both utilizations calculate true bearing angle and the azimuthal difference D2 of sun power, according to the rotating driving device transmission drive singal of D2 to bottom platform 96, make rotating driving device drive bottom platform 96 to drive trough type solar heat-collector 10 to be detected to rotate, make the position angle of trough type solar heat-collector 10 to be detected equal with the position angle of sun power.
Step D comprises further:
Sub-step D1: the true bearing angle receiving above-mentioned sun power position angle and trough type solar heat-collector to be detected 10;
Sub-step D2: utilize above-mentioned both calculating true bearing angle and the azimuthal difference D2 of sun power;
Sub-step D3: according to the rotating driving device transmission drive singal of difference D2 to bottom platform 96, it is made to drive bottom platform 96 to rotate along Plane Rotation slide rail 97, and drive trough type solar heat-collector 10 to be detected to rotate, make the position angle of trough type solar heat-collector 10 to be detected equal with the position angle of sun power, the cosine losses that elimination solar incident angle causes is on the impact of solar energy heating amount.
The method also comprises after described step D:
Step e: the actual inclination angle receiving above-mentioned sun power elevation angle, trough type solar heat-collector to be detected 10, both utilizations calculate the difference D1 of actual inclination angle and sun power elevation angle, drive singal is sent to the driving mechanism 95 that is rotated in deceleration according to D1, the driving mechanism 95 that is rotated in deceleration is made to drive rotating shaft support bar 91 to rotate, and then drive trough type solar heat-collector 10 to be detected to rotate, make sun power incident light focus on back reflection to thermal-collecting tube 12 through parabolic concentration catoptron 11.
This step e comprises further:
Sub-step E1: the actual inclination angle receiving above-mentioned sun power elevation angle and trough type solar heat-collector to be detected 10;
Sub-step E2: both utilizations calculate the difference D1 of actual inclination angle and sun power elevation angle;
Sub-step E3: the driving mechanism 95 that is rotated in deceleration rotates according to drive singal drive shaft support bar 91, rotating shaft support bar 91 drives trough type solar heat-collector 10 to be detected to rotate, realize the adjustment at its inclination angle, make sun power incident light focus on back reflection to thermal-collecting tube 12 through parabolic concentration catoptron 11, realize the two-dimensional tracking of trough type solar heat-collector to be detected 10 pairs of sun power thus.
Wherein, this step e also can perform before step D, or performed with step D simultaneously.
The method also comprises after step e:
Step F: receive said temperature information and flow information, the refrigerating capacity of refrigeration machine 40, the flow velocity of working medium pump 30 are controlled, the medial temperature of the actuating medium flowing through trough type solar heat-collector to be detected is made to equal environment temperature, to evade the external radiation loss of thermal-collecting tube 12 to the impact of solar energy heating process.
This step F comprises further:
Sub-step F1: receive the first temperature signal collection element 81, second temperature signal collection element 82, the temperature information of the 3rd temperature signal collection element 83 and the flow information of flow signal acquisition element 84;
Sub-step F2: the refrigerating capacity of refrigeration machine 40, the flow velocity of working medium pump 30 are controlled; The actuating medium temperature flowing through trough type solar heat-collector 10 to be detected is regulated, the actuating medium medial temperature flowing through trough type solar heat-collector 10 to be detected is made to equal environment temperature, to evade the external radiation loss of thermal-collecting tube 12 to the impact of solar energy heating process.
Wherein, this step F also can perform before step e, or performed with step e simultaneously.
Above-mentioned actuating medium medial temperature refers to, mean value that gathered by the first temperature signal collection element 81 and the second temperature signal collection element 82 respectively, trough type solar heat-collector 10 entrance point actuating medium temperature T1 to be detected and endpiece actuating medium temperature T2.
Sub-step F2 specifically comprises:
When the actuating medium medial temperature flowing through trough type solar heat-collector 10 to be detected is higher than environment temperature, strengthen the refrigerating capacity of refrigeration machine 40, and/or accelerate the flow velocity of working medium pump 30, equal environment temperature to make the medial temperature of the actuating medium flowing through trough type solar heat-collector 10 to be detected;
When the actuating medium medial temperature flowing through trough type solar heat-collector 10 to be detected is lower than environment temperature, reduce the refrigerating capacity of refrigeration machine 40, and/or reduce the flow velocity of working medium pump 30, equal environment temperature to make the actuating medium medial temperature flowing through trough type solar heat-collector 10 to be detected.
Step G: optical efficiency test is carried out to trough type solar heat-collector 10 to be detected.
Step G comprises further:
Sub-step G1: calculate the solar thermal energy and the heat-collecting capacity of actuating medium in trough type solar heat-collector 10 to be detected that are projected to trough type solar heat-collector 10 to be detected;
Sub-step G2: by embedded mathematical model, calculates the optical efficiency of trough type solar heat-collector further based on thermal equilibrium relevant rudimentary theory.
So far, by reference to the accompanying drawings the present embodiment has been described in detail.Describe according to above, those skilled in the art should have a kind of method of testing trough type solar heat-collector optical efficiency of the present invention and have clearly been familiar with.
It should be noted that, in accompanying drawing or instructions text, the implementation not illustrating or describe, is form known to a person of ordinary skill in the art in art, is not described in detail.In addition, the above-mentioned definition to method is not limited in the various concrete mode mentioned in embodiment, and those of ordinary skill in the art can change simply it or replace, such as:
(1) step e also can perform before step D, or performed with step D simultaneously;
(2) step F also can perform before step e, or performed with step e simultaneously;
(3) the direction term mentioned in embodiment, such as " on ", D score, "front", "rear", "left", "right" etc., be only the direction with reference to accompanying drawing, be not used for limiting the scope of the invention;
(4) unless specifically described or the step that must sequentially occur, the order of above-mentioned steps there is no be limited to above listed by, and can change according to required design or rearrange;
(5) above-described embodiment can based on design and the consideration of fiduciary level, and being mixed with each other collocation uses or uses with other embodiment mix and match, and the technical characteristic namely in different embodiment can freely form more embodiment.
In sum, the invention provides a kind of method of testing trough type solar heat-collector optical efficiency.Effectively can evade cosine losses and radiation loss to the impact of solar energy heating process, improve the accuracy of detection of trough type solar heat-collector optical efficiency, adopt General design thought and physical construction simultaneously, can meet the detection demand of trough type solar heat-collector of different model, size, adaptability is better.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. test the method for trough type solar heat-collector optical efficiency for one kind, it is characterized in that, the method utilizes a workbench to carry out optical efficiency test to trough type solar heat-collector, described workbench comprises: dual-axis rotation follows the tracks of sun subsystem (90) and actuating medium loop subsystem, trough type solar heat-collector to be detected (10) comprises parabolic concentration catoptron (11) and thermal-collecting tube (12)
The method comprises:
Steps A: trough type solar heat-collector to be detected (10) is arranged on described dual-axis rotation and follows the tracks of in sun subsystem (90);
Step B: described actuating medium loop subsystem is connected by the thermal-collecting tube (12) of working medium pipeline and trough type solar heat-collector to be detected (10), composition test loop working medium loop;
Step C: described dual-axis rotation follows the tracks of inclination angle and the position angle that sun subsystem (90) adjusts trough type solar heat-collector to be detected (10), realizes the two-dimensional tracking to the sun;
Step G: optical efficiency test is carried out to trough type solar heat-collector to be detected (10).
2. method according to claim 1, is characterized in that,
Described dual-axis rotation is followed the tracks of sun subsystem (90) and being comprised: bottom platform (96), and it can rotate along the horizontal plane, thus drives trough type solar heat-collector to be detected (10) to rotate,
Described workbench also comprises: data collection and analysis and control system, it comprises: the rotating driving device and the first angular transducer, sun power irradiation intensity and the angle detection module (60) that are arranged on the central lower of bottom platform (96), wherein, first angular transducer is for detecting the true bearing angle of trough type solar heat-collector to be detected (10), and sun power irradiation intensity and angle detection module (60) monitor sun power position angle;
Also comprise before described step G:
Step D: the true bearing angle receiving above-mentioned sun power position angle, trough type solar heat-collector to be detected (10), both utilizations calculate true bearing angle and the azimuthal difference D2 of sun power, according to the rotating driving device transmission drive singal of D2 to bottom platform (96), make rotating driving device drive bottom platform (96) to drive trough type solar heat-collector to be detected (10) to rotate, make the position angle of trough type solar heat-collector to be detected (10) equal with the position angle of sun power.
3. method according to claim 2, is characterized in that,
Described dual-axis rotation is followed the tracks of sun subsystem (90) and is also comprised Plane Rotation slide rail (97), it is positioned at the bottom that dual-axis rotation follows the tracks of sun subsystem (90), there is annular groove, be bottom platform (96) at an upper portion thereof, carriage is equipped with in the below of bottom platform (96), carriage by inlay card in the annular groove of Plane Rotation slide rail (97), and slide anteroposterior realizes the Plane Rotation of bottom platform (96), and then realize trough type solar heat-collector to be detected (10) azimuthal adjustment;
Step D comprises further:
Sub-step D1: the true bearing angle receiving above-mentioned sun power position angle and trough type solar heat-collector to be detected (10);
Sub-step D2: utilize above-mentioned both calculating true bearing angle and the azimuthal difference D2 of sun power;
Sub-step D3: according to the rotating driving device transmission drive singal of difference D2 to bottom platform (96), it is made to drive bottom platform (96) to rotate along Plane Rotation slide rail (97), and drive trough type solar heat-collector to be detected (10) to rotate, make the position angle of trough type solar heat-collector to be detected (10) equal with the position angle of sun power, eliminate the cosine losses that causes of solar incident angle thus to the impact of solar energy heating amount.
4. method according to claim 3, is characterized in that,
Described dual-axis rotation is followed the tracks of sun subsystem (90) and is also comprised: rotating shaft support bar (91), it is rotary structure, by rotating shaft support bar (91), realize the adjustment to trough type solar heat-collector to be detected (10) inclination angle;
Data collection and analysis and control system also comprise: the driving mechanism that is rotated in deceleration (95), it is positioned on the second bracing frame (92 '), drive shaft support bar (91) rotates, and is arranged on the second angular transducer of rotating shaft support bar (91);
Sun power irradiation intensity and angle detection module (60) monitoring sun power elevation angle, the second angular transducer is for detecting the actual inclination angle of trough type solar heat-collector to be detected (10);
The method after described step D, before or also comprise simultaneously:
Step e: the actual inclination angle receiving above-mentioned sun power elevation angle, trough type solar heat-collector to be detected (10), both utilizations calculate the difference D1 of actual inclination angle and sun power elevation angle, drive singal is sent to the driving mechanism that is rotated in deceleration (95) according to D1, the driving mechanism (95) that is rotated in deceleration is made to drive rotating shaft support bar (91) to rotate, and then drive trough type solar heat-collector to be detected (10) to rotate, make sun power incident light focus on back reflection to thermal-collecting tube (12) through parabolic concentration catoptron (11).
5. method according to claim 4, is characterized in that, this step e comprises further:
Sub-step E1: the actual inclination angle receiving above-mentioned sun power elevation angle and trough type solar heat-collector to be detected (10);
Sub-step E2: both utilizations calculate the difference D1 of actual inclination angle and sun power elevation angle;
Sub-step E3: the driving mechanism that is rotated in deceleration (95) rotates according to drive singal drive shaft support bar (91), rotating shaft support bar (91) drives trough type solar heat-collector to be detected (10) to rotate, realize the adjustment at its inclination angle, make sun power incident light focus on back reflection to thermal-collecting tube (12) through parabolic concentration catoptron (11).
6. method according to claim 5, is characterized in that,
Described workbench also comprises refrigeration system, refrigeration system comprises refrigeration machine (40), described actuating medium loop subsystem also comprises actuating medium refrigeratory (20) and working medium pump (30), the endpiece of thermal-collecting tube (12) is connected with actuating medium refrigeratory (20) and working medium pump (30) successively, the endpiece of working medium pump (40) is connected with the inlet end of thermal-collecting tube (12), and refrigeration machine (40) and actuating medium refrigeratory (20) form circularly cooling loop;
This data collection and analysis control system also comprises: sensor group (80), it comprises: multiple temperature signal collection element and flow signal acquisition element (84), sensor group (80) gathers the temperature information of trough type solar heat-collector to be detected (10) entrance end and actuating medium refrigeratory (20) endpiece, and the flow information of trough type solar heat-collector to be detected (10) entrance point;
The method also comprises before step e, afterwards or simultaneously:
Step F: receive said temperature information and flow information, the refrigerating capacity of refrigeration machine (40), the flow velocity of working medium pump (30) are controlled, the actuating medium medial temperature flowing through trough type solar heat-collector to be detected (10) is made to equal environment temperature, to evade the external radiation loss of thermal-collecting tube (12) to the impact of solar energy heating process.
7. method according to claim 6, is characterized in that,
Sensor group (80) comprising: the first temperature signal collection element (81), the second temperature signal collection element (82), the 3rd temperature signal collection element (83), flow signal acquisition element (84);
First temperature signal collection element (81) is arranged on the entrance point of the thermal-collecting tube (12) of trough type solar heat-collector to be detected (10), second temperature signal collection element (82) is arranged on the endpiece of the thermal-collecting tube (12) of trough type solar heat-collector to be detected (10), 3rd temperature signal collection element (83) is arranged on the endpiece of actuating medium refrigeratory (20), and flow signal acquisition element (84) is arranged on the entrance point of the thermal-collecting tube (12) of trough type solar heat-collector to be detected (10);
This step F comprises further:
Sub-step F1: receive the first temperature signal collection element (81), the second temperature signal collection element (82), the temperature information of the 3rd temperature signal collection element (83) and the flow information of flow signal acquisition element (84);
Sub-step F2: the refrigerating capacity of refrigeration machine (40), the flow velocity of working medium pump (30) are controlled; The actuating medium temperature flowing through trough type solar heat-collector to be detected (10) is regulated, the actuating medium medial temperature flowing through trough type solar heat-collector to be detected (10) is made to equal environment temperature, to evade the external radiation loss of thermal-collecting tube (12) to the impact of solar energy heating process
Above-mentioned actuating medium medial temperature refers to, mean value that gathered by the first temperature signal collection element (81) and the second temperature signal collection element (82) respectively, trough type solar heat-collector to be detected (10) entrance point actuating medium temperature T1 and endpiece actuating medium temperature T2.
8. method according to claim 7, is characterized in that,
Sub-step F2 specifically comprises:
When the actuating medium medial temperature flowing through trough type solar heat-collector to be detected (10) is higher than environment temperature, strengthen the refrigerating capacity of refrigeration machine (40), and/or accelerate the flow velocity of working medium pump (30), equal environment temperature to make the medial temperature of the actuating medium flowing through trough type solar heat-collector to be detected (10);
When the actuating medium medial temperature flowing through trough type solar heat-collector to be detected (10) is lower than environment temperature, reduce the refrigerating capacity of refrigeration machine (40), and/or reduce the flow velocity of working medium pump (30), equal environment temperature to make the actuating medium medial temperature flowing through trough type solar heat-collector to be detected (10).
9. method according to claim 8, is characterized in that,
Described dual-axis rotation is followed the tracks of sun subsystem (90) and is also comprised: the first bracing frame (92), the second bracing frame (92 '), collector tube holder (93) and mirror support frame (94),
Described first bracing frame (92) and the second bracing frame (92 ') lay respectively at the dual-side mid point of bottom platform (96), its height-adjustable;
The two ends of described rotating shaft support bar (91) are positioned on the first bracing frame (92) and the second bracing frame (92 '), described rotating shaft support bar (91) evenly arranges the vertical collector tube holder of many tools (93), the height-adjustable of collector tube holder (93), two tool collector tube holder (93) are wherein positioned at the two ends of rotating shaft support bar (91), thermal-collecting tube (12) is arranged in collector tube holder (93), the both sides of rotating shaft support bar (91) are the mirror support frame (94) of reconfigurable joint, mirror support frame (94) is in order to support and fixing parabolic concentration catoptron (11),
Steps A comprises further:
Sub-step A1: the height of adjustment bracing frame (92) makes it adapt to the physical dimension of trough type solar heat-collector to be detected (10);
Sub-step A2: the shape of adjustment mirror support frame (94) makes it adapt to the physical dimension of trough type solar heat-collector to be detected (10);
Sub-step A3: the height of adjustment thermal-collecting tube bracing frame (93) makes solar focusing ray cast on thermal-collecting tube (12).
10. the method according to claim arbitrary in claim 1 to 9, is characterized in that,
Sun power irradiation intensity and angle detection module (60) measure solar radiation illumination in real time,
Step G comprises further:
Sub-step G1: calculate the solar thermal energy and the heat-collecting capacity of actuating medium in trough type solar heat-collector to be detected (10) that are projected to trough type solar heat-collector to be detected (10);
Sub-step G2: by embedded mathematical model, calculates the optical efficiency of trough type solar heat-collector further based on thermal equilibrium relevant rudimentary theory.
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