CN205352658U - A work platform for testing slot type solar collector optics efficiency - Google Patents
A work platform for testing slot type solar collector optics efficiency Download PDFInfo
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- CN205352658U CN205352658U CN201520949570.5U CN201520949570U CN205352658U CN 205352658 U CN205352658 U CN 205352658U CN 201520949570 U CN201520949570 U CN 201520949570U CN 205352658 U CN205352658 U CN 205352658U
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Abstract
The utility model provides a work platform for testing slot type solar collector optics efficiency, this work platform includes: slot type solar collector is waited to detect by rotatory tracking sun subsystem of biax and working medium return circuit subsystem, and it is installed in the rotatory tracking sun subsystem of biax, and the rotatory inclination and the azimuth of trailing the adjustment of sun subsystem and waiting to detect slot type solar collector of biax realizes to solar two -dimentional the tracking that working medium return circuit subsystem is put through with waiting the thermal -collecting tube that detects slot type solar collector through the pipeline, constitutes and tests the cycle fluid return circuit. The utility model discloses a two dimension solar energy is trailed and temperature regulation, effectively avoids cosine loss and the influence of heat dissipation to the solar energy collection process, and the detection precision of improvement slot type solar energy collection ware optics efficiency adopts generalization design thought and mechanical structure simultaneously, can satisfy the detection demand of the slot type solar energy collection ware of different models, size, and adaptability is better.
Description
Technical field
This utility model relates to the performance detection technique field of solar light-condensing and heat-collecting device, particularly relates to a kind of work platforms for testing trough type solar heat-collector optical efficiency.
Background technology
China is as developing country maximum in the world, and every field is all in Rapid development stage, and what bring therewith is present stage surprising energy-output ratio.The total output of primary energy of China rises to 3,400,000,000 tons of standard coals of 2013 from 13.51 hundred million tons of standard coals of 2000, year primary energy consumption amount was also risen to 37.5 hundred million tons of standard coals of 2013 by 14.55 hundred million tons of standard coals of 2000, wherein the volume of production of the clean energy resource such as water power, nuclear power and wind-powered electricity generation and consumption are 3.71 hundred million tons of standard coals and 3.68 hundred million tons of standard coals, only account for the 10.91% and 9.81% of total amount.Simultaneously the energy resource structure of China is based on fossil energies such as coals, the still heavy dependence import of the high-grade energies such as oil and natural gas, cut-off was to 2014, and the external dependence degree of the oil and natural gas of China has reached 59.2% and 32.2%, and energy security problem is also especially prominent.In the face of current energy source shortage and the restriction such as environmental pollution China economic society bottleneck problem steady in a long-term, greatly develop regenerative resource and have become as China with fossil energies such as progressively Substitute coals and other various countries of the world promote energy-saving and emission-reduction and realize the common choice of energy sustainable development.It addition, the scale how realizing regenerative resource develops and improves efficiency of energy utilization has also become current problem demanding prompt solution.
The application of large-scale solar energy thermal-power-generating starts from the California of the U.S., and planned developed areas major part in southern Europe, north African and Middle East, there are abundant solar energy resources, cheap soil and electrical demand in these areas.From 1985, the U.S. built up 9 trough type solar power generation stations, total capacity 354MW in succession in California desert area, and the nearly 1.1GWh of annual electricity generating capacity, the yearly efficiency in power station reaches 11.5～13.6%.Spain Andasol-1 is typical trough type solar power generation station, generated electricity by way of merging two or more grid systems in 2008, installed capacity is 50MW, heat collector adopts EuroTrough150 heat collector, reflecting mirror is provided by the Flabeg company of Germany, vacuum collector is provided 50% and sehott company of Germany offer 50% respectively by Solel company of Israel, and with using conduction oil as heat-conducting work medium, steam turbine adopts Siemens's 50MW reheat turbine.
The solar energy resources of China is very abundant, year solar radiation value be about 1050～2450kW h (m2A), more than 1050kW h (m2A) area accounts for more than the 96% of area.The annual day solar radiation quantity of China is 180W/m2, 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 extremely abundant, sunshine-duration in year, especially more than 3000 hours, belongs to one of abundant area of world's solar energy resources, and these utilize the regenerative resources such as solar energy to establish resource base for Devoting Major Efforts To Developing.
Owing to the energy density of solar energy is relatively low, recycling after solar energy need to carry out optically focused, to obtain the heat energy of higher temperature, this process needs by focusing solar collector.Solar concentrating system mainly includes moveable reflecting mirror 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, and wherein the range of application of groove type solar heat collector is the most extensive.
The subject matter of current solar energy thermal-power-generating is that cost is high and efficiency is low, slot type and tower type solar energy thermal power generation cost are 3～5 times of conventional energy resource cost of electricity-generating, its main cause has three below aspect: 1, the 80% of cost of electricity-generating comes from initial cost, and the investment wherein exceeding half comes from large-area optical reflection unit and expensive reception device, these devices manufacture and installation cost is higher；2, the generating efficiency of solar heat power generation system is low, year, the clean generating efficiency of solar energy was 10～16%, and under identical installed capacity, relatively low generating efficiency needs more light-condensing and heat-collecting device, adding cost of investment, the operation in power station simultaneously and maintenance cost are higher；3, owing to solar energy supply is discontinuous, unstable, it is necessary to increasing regenerative apparatus in systems, jumbo power station needs huge regenerative apparatus, causing whole electric power station system structure complicated, cost increases.
Slot type system solar energy heat collector line focus mode utilizes groove type paraboloid condenser lens by solar light focusing to tubular heat collector, and in order to heat the working medium in thermal-collecting tube, working medium can use water, conduction oil or fuse salt, adopts uniaxiality tracking mode.Due to reasons in structure, trough system focusing ratio is generally 40～100, general 300～450 DEG C of its heat-collecting temperature, trough system can adopt parallel way to be collected by the medium of heating, therefore single-machine capacity can be relatively big, and its weak point is that focusing ratio is relatively low, and thermal-collecting tube area of dissipation is big.Thus system total efficiency is relatively low.The solar collecting performance how improving groove type solar system has also become the important topic in solar energy research field.Optical efficiency, as the important performance characteristic of solar thermal collector, characterizes the degree of perfection of Jing Chang design and manufacture process.Optical loss is one of main heat loss item of groove type solar thermal-arrest process, accurately detects optical efficiency, and structure and performance to follow-up improvement trough type solar heat-collector have very important meaning.
Utility model content
(1) to solve the technical problem that
In order to solve prior art Problems existing, this utility model provides a kind of work platforms for testing trough type solar heat-collector optical efficiency, in order to the optical efficiency of accurate and quick detection trough type solar heat-collector.
(2) technical scheme
According to an aspect of the present utility model, provide a kind of work platforms for testing trough type solar heat-collector optical efficiency, this work platforms includes: dual-axis rotation follows the tracks of sun subsystem 90, wherein, trough type solar heat-collector 10 to be detected is arranged on dual-axis rotation and follows the tracks of in sun subsystem 90, including: parabolic concentration reflecting mirror 11 and thermal-collecting tube 12, this dual-axis rotation is followed the tracks of sun subsystem 90 and is adjusted inclination angle and the azimuth of trough type solar heat-collector 10 to be detected, it is achieved its two-dimensional tracking to the sun；Working media loop subsystem, it is connected by the thermal-collecting tube 12 of pipeline with trough type solar heat-collector 10 to be detected, forms test loop working medium loop.
Preferably, in utility model works platform, dual-axis rotation is followed the tracks of sun subsystem 90 and is included: bottom platform 96 and plane rotation slide rail 97, Plane Rotation slide rail 97 is positioned at dual-axis rotation and follows the tracks of the bottom of sun subsystem 90, there is annular groove, it is bottom platform 96 at an upper portion thereof, bottom platform 96 be arranged below carriage, carriage is embedded in the annular groove of Plane Rotation slide rail 97 by card, and slide anteroposterior realizes the Plane Rotation of bottom platform 96, and then realize the azimuthal adjustment of trough type solar heat-collector 10 to be detected.
Preferably, in utility model works platform, dual-axis rotation is followed the tracks of sun subsystem 90 and is also included: rotating shaft support bar the 91, first bracing frame the 92, second bracing frame 92 ', collector tube holder 93 and mirror support frame 94, the first bracing frame 92 and the second bracing frame 92 ' lay respectively at the dual-side midpoint of bottom platform 96；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 is uniformly arranged the collector tube holder 93 that many tools are vertical, two tool collector tube holder 93 therein are 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, and mirror support frame 94 is in order to support and fixing parabolic concentration reflecting mirror 11；Wherein, rotating shaft support bar 91 is rotary structure, by rotating shaft support bar 91, it is achieved the adjustment to trough type solar heat-collector 10 inclination angle to be detected.
Preferably, in utility model works platform, the height of the first bracing frame 92 and the second bracing frame 92 ' is adjusted according to the physical dimension of trough type solar heat-collector 10 to be detected；Mirror support frame 94 adopts adjustable frame for movement, and its shape is adjusted according to the physical dimension of parabolic concentration reflecting mirror 11；Collector tube holder 93 adopts telescopic frame for movement, and its height is adjusted according to the focal length of different parabolic concentration reflecting mirrors 11.
Preferably, utility model works platform also includes: data collection and analysis and control system, this data collection and analysis and control system include: sensor group 80, comprising: multiple temperature signal collection element, the temperature information of working media in its collecting test cycle fluid loop；And flow signal acquisition element 84, the flow information of working media in its collecting test cycle fluid loop；Data collection and analysis and control terminal 70, working media temperature, according to the working media temperature information gathered and flow information, is adjusted by it.
Preferably, in utility model works platform, sensor group 80 includes: first temperature signal collection element the 81, second temperature signal collection element the 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 10 to be detected, second temperature signal collection element 82 is arranged on the port of export of the thermal-collecting tube 12 of trough type solar heat-collector 10 to be detected, 3rd temperature signal collection element 83 is arranged on the port of export of working media cooler 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 10 to be detected；Data collection and analysis and control terminal 70, its transducing signal input connects the first temperature signal collection element 81, second temperature signal collection element 82, 3rd temperature signal collection element 83, flow signal acquisition element 84, its control signal outfan connects refrigeration machine 40 and working medium pump 30, and 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, refrigerating capacity to refrigeration machine 40, the flow velocity of working medium pump 30 is controlled, the working media temperature flowing through trough type solar heat-collector 10 to be detected is adjusted, flow through the working media mean temperature of trough type solar heat-collector 10 to be detected equal to ambient temperature, to evade the external radiation loss of thermal-collecting tube 12 impact on solar energy heating process, above-mentioned working media mean temperature refers to, respectively by the first temperature signal collection element 81 and what the second temperature signal collection element 82 gathered, the meansigma methods of trough type solar heat-collector 10 entrance point working media temperature T1 and port of export working media temperature T2 to be detected.
Preferably, in utility model works platform, the working media temperature flowing through trough type solar heat-collector 10 to be detected is adjusted by data collection and analysis and control terminal 70 in the following manner: when the working media mean temperature flowing through trough type solar heat-collector 10 to be detected is higher than ambient temperature, strengthen the refrigerating capacity of refrigeration machine 40, and/or the flow velocity of quickening working medium pump 30, the mean temperature to flow through the working media of trough type solar heat-collector 10 to be detected is equal to ambient temperature；When flowing through the working media mean temperature of trough type solar heat-collector 10 to be detected lower than ambient temperature, reduce the refrigerating capacity of refrigeration machine 40, and/or the flow velocity of reduction working medium pump 30, the working media mean temperature to flow through trough type solar heat-collector 10 to be detected is equal to ambient temperature.
Preferably, in utility model works platform, data collection and analysis and control system also include: the driving mechanism 95 that is rotated in deceleration, be arranged on the second angular transducer of rotating shaft support bar 91, solar energy irradiation intensity and angle detection module 60；Solar energy irradiation intensity and angle detection module 60, it measures solar energy irradiation intensity in real time, and monitors the elevation angle of solar energy, and the actual inclination angle of groove type heat collector 10 to be detected measured by the second angular transducer；Data collection and analysis and control terminal 70, its transducing signal input is connected to solar energy irradiation intensity and angle detection module 60 and the second angular transducer, its control signal outfan is connected to the driving mechanism 95 that is rotated in deceleration, receive the elevation angle of solar energy, calculate the actual inclination angle of trough type solar heat-collector 10 to be detected and the difference D1 of solar energy elevation angle；And send driving signal according to difference D1 to the driving mechanism 95 that is rotated in deceleration, be rotated in deceleration driving mechanism 95 according to driving signal drive shaft support bar 91 to rotate, rotating shaft support bar 91 drives trough type solar heat-collector 10 to be detected to rotate, realize the adjustment at its inclination angle so that solar energy incident illumination focuses on back reflection to thermal-collecting tube 12 through parabolic concentration reflecting mirror 11.
Preferably, in utility model works platform, data collection and analysis and control system also include: be arranged on rotating driving device and first angular transducer of the central lower of bottom platform 96；Solar energy irradiation intensity and angle detection module 60, the azimuth of its monitoring solar energy；First angular transducer, it measures the true bearing angle of groove type heat collector 10 to be detected；Data collection and analysis and control terminal 70, its transducing signal input is connected to solar energy irradiation intensity and angle detection module 60 and the first angular transducer, its control signal outfan is connected to rotating driving device, receive the azimuth of solar energy, calculate true bearing angle and the azimuthal difference D2 of solar energy of trough type solar heat-collector 10 to be detected, and send driving signal according to difference D2 to the rotating driving device of bottom platform 96, rotating driving device drives bottom platform 96 to rotate along Plane Rotation slide rail 97 according to driving signal, bottom platform 96 drives trough type solar heat-collector 10 to be detected to rotate, the azimuth making trough type solar heat-collector 10 to be detected is equal with the azimuth of solar energy, it is achieved in the trough type solar heat-collector 10 to be detected two-dimensional tracking to solar energy, the cosine losses that elimination solar incident angle the causes impact on solar energy heating amount.
Preferably, in utility model works platform, data collection and analysis and control terminal 70 calculate the solar thermal energy and the working media heat-collecting capacity in trough type solar heat-collector 10 to be detected that are projected to trough type solar heat-collector 10 to be detected, by embedded mathematical model, calculate the optical efficiency of trough type solar heat-collector further based on thermal balance relevant rudimentary theory.
(3) beneficial effect
From technique scheme it can be seen that the work platforms for testing trough type solar heat-collector optical efficiency that this utility model provides has the advantages that
(1) based on heat balance principle, rational technological means is adopted to evade cosine losses and the radiation loss impact on solar energy heating process, it is possible to more exactly the optical efficiency of trough type solar heat-collector to be detected；
(2) unitized design philosophy and frame for movement are adopted, it is possible to meeting the detection demand of different model, various sizes of trough type solar heat-collector, adaptability is better；
(3) two-dimensional solar energy tracking mode is adopted, additionally it is possible to adapt to the testing requirement in different dimensions area, and improve the accuracy of performance detection；
(4) equipment and the measurement apparatus technology maturity that adopt are higher, contribute to the popularization and application of this technology.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of work platforms for testing trough type solar heat-collector optical efficiency according to this utility model embodiment；
Fig. 2 is the structural representation of the dual-axis rotation tracking sun subsystem of a kind of work platforms for testing trough type solar heat-collector optical efficiency according to this utility model embodiment；
Fig. 3 is the partial enlarged drawing of the dual-axis rotation tracking sun subsystem of a kind of work platforms for testing trough type solar heat-collector optical efficiency according to this utility model embodiment；
Fig. 4 is another partial enlarged drawing of the dual-axis rotation tracking sun subsystem of a kind of work platforms for testing trough type solar heat-collector optical efficiency according to this utility model embodiment.
[symbol description]
10-trough type solar heat-collector to be detected；
11-parabolic concentration reflecting mirror；12-thermal-collecting tube；
20-working media cooler；
30-working medium pump；
40-refrigeration machine；
50-condenser；
60-solar energy irradiation intensity and angle detection module；
70-data collection and analysis and control terminal；
80-sensor group；
81-the first temperature signal collection element；
82-the 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-the first bracing frame；92 '-the second bracing frames；
93-collector tube holder；94-mirror support frame；
95-is rotated in deceleration driving mechanism；96-bottom platform；
97-Plane Rotation slide rail.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, this utility model is further described.
Fig. 1 is the structural representation that this utility model provides a kind of work platforms for testing trough type solar heat-collector optical efficiency.This work platforms includes: dual-axis rotation is followed the tracks of sun subsystem, working media loop subsystem, refrigeration system, data collection and analysis and controls system.The test object of this work platforms is trough type solar heat-collector, it is possible to the optical efficiency of trough type solar heat-collector is detected.
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 is followed the tracks of sun subsystem 90 and is realized the trough type solar heat-collector 10 to be detected two-dimensional tracking to solar energy, the pipeline of trough type solar heat-collector 10 to be detected with working media loop subsystem is connected, the pipeline of working media loop subsystem is connected to working media cooler 20, it coordinates with refrigeration system and carries out heat exchange, data collection and analysis and control system acquisition parameter and control system 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 of work platforms of the present utility model.
Dual-axis rotation is followed the tracks of sun subsystem 90 and is included rotating shaft support bar the 91, first bracing frame the 92, second bracing frame 92 ', collector tube holder 93, mirror support frame 94, bottom platform 96 and plane rotation slide rail 97, for realizing the trough type solar heat-collector 10 to be detected two-dimensional tracking to solar energy.
Trough type solar heat-collector 10 to be detected includes: parabolic concentration reflecting mirror 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, it is the bottom platform 96 of rectangle at an upper portion thereof, bottom platform 96 be arranged below carriage, such as pulley, carriage is embedded in the annular groove of Plane Rotation slide rail 97 by card, and can slide anteroposterior, and then realize to the azimuthal adjustment of trough type solar heat-collector 10 to be detected.
First bracing frame 92 and the second bracing frame 92 ' lay respectively at the dual-side midpoint of bottom platform 96, can adjust the height of the first bracing frame 92 and the second bracing frame 92 ' according to the physical dimension of trough type solar heat-collector 10 to be detected, the trough type solar heat-collector to meet different model and size can run well.
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 is uniformly arranged the collector tube holder 93 that many tools are vertical, two tool collector tube holder therein are 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 reflecting mirror 11, it adopts adjustable frame for movement, appropriate regulation can be carried out according to the physical dimension of parabolic concentration reflecting mirror 11, collector tube holder 93 adopts telescopic frame for movement, focal length according to different parabolic concentration reflecting mirrors 11 carries out specific aim adjustment, to meet the testing requirement to different model and the trough type solar heat-collector of size, and focus on light can be projected to smoothly on the thermal-collecting tube 12 of trough type solar heat-collector.
Rotating shaft support bar 91 is rotary structure, by rotating shaft support bar 91, it is achieved the adjustment to trough type solar heat-collector 10 inclination angle to be detected.
Working media loop subsystem includes working medium pump 30, working media cooler 20, working medium pipeline and other heat exchange and pipeline.Refer to Fig. 1, working media is pumped in trough type solar heat-collector 10 to be detected through working medium pump 30 and is heated, then enter working media cooler 20, working media cooler 20 coordinates with refrigeration system working media is cooled down, and the working media after cooling is delivered in trough type solar heat-collector 10 to be detected through working medium pump 30 again and circulated.
Working media can be selected for softening water, saline, ethylene glycol, heat conduction wet goods, is mainly used in absorbing the solar thermal energy focused on through trough type solar heat-collector 10 to be detected, also requires that working media all can normal operation under the condition such as high temperature and low temperature simultaneously.When using different working medias, it is necessary to use corresponding working barrel 30 to match, in order to system worked well.
Additionally working medium pump 30 auxiliary device such as grade also may be installed bottom platform 96, by completing synchronous rotary to ensure the normal operation of test platform device.
Refrigeration system includes refrigeration machine 40 and condenser 50, and refrigeration machine 40 adopts compression or sorption type refrigerating technology, is used for producing low temperature chilled water, utilizes condenser 50 to process used heat produced by refrigeration machine 40 simultaneously.Working media cooler 20, heat exchange is carried out with low temperature chilled water, to reach cooling effect from the working media of trough type solar heat-collector 10 to be detected discharge.
Refer to Fig. 1, data collection and analysis and control system include: the driving mechanism 95 that is rotated in deceleration, be arranged on the second angular transducer of 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, solar energy irradiation intensity and angle detection module 60 and data collection and analysis and control terminal 70, for realizing the automatic measurement of work platforms, Automated condtrol and data analytical calculation.
Wherein, sensor group 80 includes: first temperature signal collection element the 81, second temperature signal collection element the 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 port of export of trough type solar heat-collector 10 to be detected, 3rd temperature signal collection element 83 is arranged on the port of export of working media cooler 20, and flow signal acquisition element 84 is arranged on the entrance point at trough type solar heat-collector 10 to be detected.Temperature information and the flow information of flow signal acquisition element collection that these three temperature signal collection elements gather are received by data collection and analysis and control terminal 70.
Solar energy irradiation intensity and angle detection module 60 measure solar energy irradiation intensity in real time, and monitor elevation angle and the azimuth of solar energy.Data collection and analysis and control terminal 70, its transducing signal input is connected to solar energy irradiation intensity and angle detection module the 60, first angular transducer, the second angular transducer, and its control signal outfan is connected to be rotated in deceleration driving mechanism 95 and rotating driving device.The true bearing angle of groove type heat collector 10 to be detected measured by first angular transducer, and the actual inclination angle of groove type heat collector 10 to be detected measured by the second angular transducer.Data collection and analysis and control terminal 70 receive elevation angle and the azimuth of solar energy, calculate the actual inclination angle of trough type solar heat-collector 10 to be detected and the difference D1 of solar energy elevation angle, and the true bearing angle of trough type solar heat-collector to be detected 10 and the azimuthal difference D2 of solar energy.
Data collection and analysis and control terminal 70 send driving signal according to D1 to the driving mechanism 95 that is rotated in deceleration, be rotated in deceleration driving mechanism 95 according to driving signal drive shaft support bar 91 to rotate, rotating shaft support bar 91 drives trough type solar heat-collector 10 to be detected to rotate, for adjusting the inclination angle of trough type solar heat-collector 10 to be detected so that solar energy incident illumination can reflex to thermal-collecting tube 12 exactly after parabolic concentration reflecting mirror 11 focuses on.
Simultaneously, data collection and analysis and control terminal 70 send driving signal according to D2 to the rotating driving device of bottom platform 96, rotating driving device drives bottom platform 96 to rotate along Plane Rotation slide rail 97 according to driving signal, bottom platform 96 drives trough type solar heat-collector 10 to be detected to rotate, the azimuth making trough type solar heat-collector 10 to be detected is equal with the azimuth of solar energy, it is achieved in the trough type solar heat-collector device 10 to be detected two-dimentional accurate tracking to solar energy, the cosine losses that elimination solar incident angle the causes impact on solar energy heating amount.
Data collection and analysis and control terminal 70, its transducing signal input connects the first temperature signal collection element 81, second temperature signal collection element 82, 3rd temperature signal collection element 83, flow signal acquisition element 84, its control signal outfan connects refrigeration machine 40 and working medium pump 30, 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, refrigerating capacity to refrigeration machine 40, the flow velocity of working medium pump 30 is precisely controlled, the working media temperature flowing through trough type solar heat-collector 10 to be detected is adjusted, flow through the working media mean temperature of trough type solar heat-collector 10 to be detected equal to ambient temperature, to evade the external radiation loss of thermal-collecting tube 12 impact on solar energy heating process.
Wherein, the above-mentioned working media mean temperature through trough type solar heat-collector 10 to be detected refers to, respectively by the meansigma methods of the first temperature signal collection element 81 and trough type solar heat-collector 10 entrance point working media temperature T1 and port of export working media temperature T2 that the second temperature signal collection element 82 gathers, to be detected.
The above-mentioned method that working media temperature is adjusted may is that and utilizes feedback, when the working media mean temperature flowing through trough type solar heat-collector 10 to be detected is higher than ambient temperature, strengthen the refrigerating capacity of refrigeration machine 40, and/or the flow velocity of quickening working medium pump 30, the mean temperature to flow through the working media of trough type solar heat-collector 10 to be detected is equal to ambient temperature；When flowing through the working media mean temperature of trough type solar heat-collector 10 to be detected lower than ambient temperature, reduce the refrigerating capacity of refrigeration machine 40, and/or the flow velocity of reduction working medium pump 30, the working media mean temperature to flow through trough type solar heat-collector 10 to be detected is equal to ambient temperature.
Data collection and analysis and control terminal 70 calculate the solar thermal energy being projected to trough type solar heat-collector 10 to be detected and the working media heat-collecting capacity in trough type solar heat-collector 10 to be detected simultaneously, by embedded mathematical model, calculate the optical efficiency of trough type solar heat-collector further based on thermal balance relevant rudimentary theory, the circular of optical efficiency is referred to the corresponding document of prior art.
In this work platforms, except being used for testing trough type solar heat-collector optical efficiency, by replacing trough type solar heat-collector 10, apply also for other one-dimensional line-focusing solar light-condensing and heat-collecting devices such as test linear Fresnel.
So far, already in connection with accompanying drawing, the present embodiment has been described in detail.According to above description, the work platforms for testing trough type solar heat-collector optical efficiency of the present utility model should have been had and clearly recognized by those skilled in the art.
It should be noted that in accompanying drawing or description text, the implementation not illustrating or describing, it is in art form known to a person of ordinary skill in the art, is not described in detail.Additionally, the above-mentioned definition to each element is not limited in various concrete structures, shape or the mode mentioned in embodiment, it can be carried out change simply or replace by those of ordinary skill in the art, for instance:
(1) by trough type solar heat-collector being replaced with linear Fresnel formula solar thermal collector, other one-dimensional line-focusing solar light-condensing and heat-collecting devices such as test linear Fresnel are applied also for；
(2) the direction term mentioned in embodiment, for instance " on ", D score, "front", "rear", "left", "right" etc., be only the direction with reference to accompanying drawing, be not used for limiting protection domain of the present utility model；(3) above-described embodiment can based on the consideration of design and reliability, and the collocation that is mixed with each other uses or uses with other embodiment mix and match, and namely the technical characteristic in different embodiments can freely form more embodiment.
In sum, this utility model provides a kind of work platforms for testing trough type solar heat-collector optical efficiency, can effectively evade cosine losses and the radiation loss impact on solar energy heating process, improve the accuracy of detection of trough type solar heat-collector optical efficiency, adopt General design thought and frame for movement simultaneously, disclosure satisfy that the detection demand of the trough type solar heat-collector of different model, size, adaptability is better.
Particular embodiments described above; the purpose of this utility model, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only specific embodiment of the utility model; it is not limited to this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (10)
1. the work platforms being used for testing trough type solar heat-collector optical efficiency, it is characterised in that this work platforms includes:
Dual-axis rotation follows the tracks of sun subsystem (90), wherein, trough type solar heat-collector to be detected (10) is arranged on dual-axis rotation and follows the tracks of in sun subsystem (90), including: parabolic concentration reflecting mirror (11) and thermal-collecting tube (12), this dual-axis rotation is followed the tracks of sun subsystem (90) and is adjusted inclination angle and the azimuth of trough type solar heat-collector to be detected (10), it is achieved its two-dimensional tracking to the sun；
Working media loop subsystem, it is connected by the thermal-collecting tube (12) of pipeline with trough type solar heat-collector to be detected (10), forms test loop working medium loop.
2. work platforms according to claim 1, it is characterised in that dual-axis rotation is followed the tracks of sun subsystem (90) and being included: bottom platform (96) and plane rotation slide rail (97),
Plane Rotation slide rail (97) is positioned at dual-axis rotation and follows the tracks of the bottom of sun subsystem (90), there is annular groove, it is bottom platform (96) at an upper portion thereof, bottom platform (96) be arranged below carriage, carriage is embedded in the annular groove of Plane Rotation slide rail (97) by card, 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.
3. work platforms according to claim 2, it is characterized in that, dual-axis rotation is followed the tracks of sun subsystem (90) and is also included: rotating shaft support bar (91), the first bracing frame (92), the second bracing frame (92 '), collector tube holder (93) and mirror support frame (94)
First bracing frame (92) and the second bracing frame (92 ') lay respectively at the dual-side midpoint of bottom platform (96)；
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) is uniformly arranged the collector tube holder (93) that many tools are vertical, two tools collector tube holder (93) therein are 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), and mirror support frame (94) is in order to support and fixing parabolic concentration reflecting mirror (11)；
Wherein, rotating shaft support bar (91) is rotary structure, by rotating shaft support bar (91), it is achieved the adjustment to trough type solar heat-collector to be detected (10) inclination angle.
4. work platforms according to claim 3, it is characterised in that the height of the first bracing frame (92) and the second bracing frame (92 ') is adjusted according to the physical dimension of trough type solar heat-collector to be detected (10)；
Mirror support frame (94) adopts adjustable frame for movement, and its shape is adjusted according to the physical dimension of parabolic concentration reflecting mirror (11)；
Collector tube holder (93) adopts telescopic frame for movement, and its height is adjusted according to the focal length of different parabolic concentration reflecting mirrors (11).
5. work platforms according to claim 4, it is characterised in that also include: data collection and analysis and control system, this data collection and analysis and control system include:
Sensor group (80), comprising: multiple temperature signal collection element, the temperature information of working media in its collecting test cycle fluid loop；And flow signal acquisition element (84), the flow information of working media in its collecting test cycle fluid loop；
Data collection and analysis and control terminal (70), working media temperature, according to the working media temperature information gathered and flow information, is adjusted by it.
6. work platforms according to claim 5, it is characterised in that:
Sensor group (80) including: 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 port of export 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 port of export of working media cooler (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)；
Data collection and analysis and control terminal (70), its transducing signal input connects the first temperature signal collection element (81), second temperature signal collection element (82), 3rd temperature signal collection element (83), flow signal acquisition element (84), its control signal outfan connects refrigeration machine (40) and working medium pump (30), this data collection and analysis and control terminal (70) 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), refrigerating capacity to refrigeration machine (40), the flow velocity of working medium pump (30) is controlled, the working media temperature flowing through trough type solar heat-collector to be detected (10) is adjusted, flow through the working media mean temperature of trough type solar heat-collector to be detected (10) equal to ambient temperature, to evade the external radiation loss of thermal-collecting tube (12) impact on solar energy heating process,
Above-mentioned working media mean temperature refers to, respectively by the first temperature signal collection element (81) and meansigma methods that the second temperature signal collection element (82) gathers, trough type solar heat-collector to be detected (10) entrance point working media temperature T1 and port of export working media temperature T2.
7. work platforms according to claim 6, it is characterised in that the working media temperature flowing through trough type solar heat-collector to be detected (10) is adjusted by described data collection and analysis and control terminal (70) in the following manner:
When the working media mean temperature flowing through trough type solar heat-collector to be detected (10) is higher than ambient temperature, strengthen the refrigerating capacity of refrigeration machine (40), and/or the flow velocity of quickening working medium pump (30), the mean temperature to flow through the working media of trough type solar heat-collector to be detected (10) is equal to ambient temperature；
When flowing through the working media mean temperature of trough type solar heat-collector to be detected (10) lower than ambient temperature, reduce the refrigerating capacity of refrigeration machine (40), and/or the flow velocity of reduction working medium pump (30), the working media mean temperature to flow through trough type solar heat-collector to be detected (10) is equal to ambient temperature.
8. work platforms according to claim 6, it is characterised in that
Data collection and analysis and control system also include: the driving mechanism that is rotated in deceleration (95), be arranged on the second angular transducer of rotating shaft support bar (91), solar energy irradiation intensity and angle detection module (60)；
Solar energy irradiation intensity and angle detection module (60), it measures solar energy irradiation intensity in real time, and monitors the elevation angle of solar energy, and the actual inclination angle of groove type heat collector to be detected (10) measured by the second angular transducer；
Data collection and analysis and control terminal (70), its transducing signal input is connected to solar energy irradiation intensity and angle detection module (60) and the second angular transducer, its control signal outfan is connected to the driving mechanism (95) that is rotated in deceleration, receive the elevation angle of solar energy, calculate the actual inclination angle of trough type solar heat-collector to be detected (10) and the difference D1 of solar energy elevation angle；And send driving signal according to difference D1 to the driving mechanism that is rotated in deceleration (95), be rotated in deceleration driving mechanism (95) according to driving signal drive shaft support bar (91) to rotate, rotating shaft support bar (91) drives trough type solar heat-collector to be detected (10) to rotate, realize the adjustment at its inclination angle so that solar energy incident illumination is through parabolic concentration reflecting mirror (11) focusing back reflection to thermal-collecting tube (12).
9. work platforms according to claim 8, it is characterised in that
Data collection and analysis and control system also include: be arranged on rotating driving device and first angular transducer of the central lower of bottom platform (96)；
Solar energy irradiation intensity and angle detection module (60), the azimuth of its monitoring solar energy；
First angular transducer, it measures the true bearing angle of groove type heat collector to be detected (10)；
Data collection and analysis and control terminal (70), its transducing signal input is connected to solar energy irradiation intensity and angle detection module (60) and the first angular transducer, its control signal outfan is connected to rotating driving device, receive the azimuth of solar energy, calculate true bearing angle and the azimuthal difference D2 of solar energy of trough type solar heat-collector to be detected (10), and send driving signal according to difference D2 to the rotating driving device of bottom platform (96), rotating driving device drives bottom platform (96) to rotate along Plane Rotation slide rail (97) according to driving signal, bottom platform (96) drives trough type solar heat-collector to be detected (10) to rotate, the azimuth making trough type solar heat-collector to be detected (10) is equal with the azimuth of solar energy, it is achieved in the trough type solar heat-collector to be detected (10) two-dimensional tracking to solar energy, the cosine losses that elimination solar incident angle the causes impact on solar energy heating amount.
10. the work platforms according to any claim in claim 1 to 9, it is characterized in that, data collection and analysis and control terminal (70) calculate the solar thermal energy and the working media heat-collecting capacity in trough type solar heat-collector to be detected (10) that are projected to trough type solar heat-collector to be detected (10), by embedded mathematical model, calculate the optical efficiency of trough type solar heat-collector further based on thermal balance relevant rudimentary theory.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520949570.5U CN205352658U (en) | 2015-11-24 | 2015-11-24 | A work platform for testing slot type solar collector optics efficiency |
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| CN201520949570.5U CN205352658U (en) | 2015-11-24 | 2015-11-24 | A work platform for testing slot type solar collector optics efficiency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319051A (en) * | 2015-11-24 | 2016-02-10 | 中国科学院工程热物理研究所 | Work platform for testing optical efficiency of groove type solar thermal collector |
| CN106226036A (en) * | 2016-08-12 | 2016-12-14 | 中国科学院工程热物理研究所 | A kind of on-site measurement method of trough type solar heat-collector light heat loss |
-
2015
- 2015-11-24 CN CN201520949570.5U patent/CN205352658U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319051A (en) * | 2015-11-24 | 2016-02-10 | 中国科学院工程热物理研究所 | Work platform for testing optical efficiency of groove type solar thermal collector |
| CN105319051B (en) * | 2015-11-24 | 2018-04-17 | 中国科学院工程热物理研究所 | A kind of workbench for being used to test trough type solar heat-collector optical efficiency |
| CN106226036A (en) * | 2016-08-12 | 2016-12-14 | 中国科学院工程热物理研究所 | A kind of on-site measurement method of trough type solar heat-collector light heat loss |
| CN106226036B (en) * | 2016-08-12 | 2018-11-16 | 中国科学院工程热物理研究所 | A kind of on-site measurement method of trough type solar heat-collector photo-thermal loss |
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