CN101231214A - Apparatus for testing and evaluating heat-filling and heat-discharging process of thermal storage device - Google Patents
Apparatus for testing and evaluating heat-filling and heat-discharging process of thermal storage device Download PDFInfo
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- CN101231214A CN101231214A CNA2008100468177A CN200810046817A CN101231214A CN 101231214 A CN101231214 A CN 101231214A CN A2008100468177 A CNA2008100468177 A CN A2008100468177A CN 200810046817 A CN200810046817 A CN 200810046817A CN 101231214 A CN101231214 A CN 101231214A
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Abstract
The invention relates to a device for detecting and evaluating the performance index in the processes of heat charge and heat release of a heat capacitor in the solar thermal power generation. The device for detecting and evaluating the processes of the heat charge and heat release of the heat capacitor is characterized in that the device comprises a first conduit (1), an air compressor (2), an air-drying filter (3), an air preheater (4), an air heater (5), an electrical control flow adjusting valve (6), a first flow indicator (7), a second flow indicator (9), a first temperature pressure sensor (11), a computer (12), a second temperature pressure sensor (13), a third temperature pressure sensor (14) and a second conduit (15), wherein, the first conduit (1) is provided with the air-drying filter (3), the air preheater (4), the air heater (5), the electrical control flow adjusting valve (6) and the first flow indicator (7) in sequence; the second conduit (15) is provided with the second flow indicator (9). The device has simple structure and easy operation and can detect and evaluate the index of the heat accumulation efficiency, the security and the durability in the processes of heat charge and heat release of the heat capacitor.
Description
Technical field
The present invention relates to the testing performance index that fills heat, exothermic process and the evaluating apparatus of the heat reservoir in the solar energy thermal-power-generating.
Background technology
Utilize sun power to carry out dynamic power system since be subjected to season, round the clock, the influence of meteorological conditions such as cloud and mist and sleet, ground sun power has intermittence and instability, and heat reservoir must be set.
Design different heat reservoirs to be applied to different needs, just must test checking its security and permanance, and according to experimental data heat reservoir is optimized and improves design the fill heat, exothermic process of heat reservoir.
But also do not have at present a kind of can be to can both the experimentize simple and easy-operating test and evaluation device of test of different heat reservoirs.
Summary of the invention
The purpose of this invention is to provide the test and evaluation device that a kind of heat reservoir fills heat, exothermic process, this device is simple and easy to operate, can carry out test and evaluation to the heat accumulation efficient of filling heat, exothermic process, security, the durability index of heat reservoir.
To achieve these goals, technical scheme of the present invention is: heat reservoir fills the test and evaluation device of heat, exothermic process, it is characterized in that it comprises first pipe 1, air compressor, air drying filtrator, air preheater, air heater, automatically controlled flow control valve, first flow indicator, second flow indicator, first temperature and pressure transmitter, computing machine, second temperature and pressure transmitter, the 3rd temperature and pressure transmitter, second pipeline; The output terminal of air compressor is connected with an end of first pipeline, the other end of first pipeline is connected with the draft tube of heat reservoir, begins to be provided with successively air drying filtrator, air preheater, air heater, automatically controlled flow control valve, first flow indicator from an end that links to each other with air compressor on first pipeline; One end of second pipeline is connected with the escape pipe of heat reservoir, and second pipeline is provided with second flow indicator; The air intake opening place of heat reservoir is provided with first temperature and pressure transmitter, is provided with second temperature and pressure transmitter in the heat reservoir, and the place, gas outlet of heat reservoir is provided with the 3rd temperature and pressure transmitter; Automatically controlled flow control valve, first flow indicator, second flow indicator, first temperature and pressure transmitter, second temperature and pressure transmitter, the 3rd temperature and pressure transmitter are linked to each other with the signal input port of computing machine by lead respectively.
Second pipeline is provided with aerial condenser, and second flow indicator is between aerial condenser and heat reservoir.
The present invention heats air by first pipeline, air compressor, air drying filtrator, air preheater, air heater, the process that raises as the absorption of air sun power temperature of heat-transfer working medium in the hot power generation process of analog solar.Hot-air enters the thermal process of filling that heat reservoir to be tested can be simulated heat-storing device; When closing air heater, can simulate the exothermic process of heat reservoir.
Adopt automatically controlled flow control valve, first flow indicator, second flow indicator, first temperature and pressure transmitter, computing machine, second temperature and pressure transmitter, the 3rd temperature and pressure transmitter, measure real time data, utilize computer acquisition and carry out analytical calculation, finish test purpose.
1) repeatedly open and close air preheater and air heater can carry out heat reservoir repeatedly fill heat, heat release experiment, the permanance of testing heat reservoir thus;
2) heat accumulation efficiency test: fill, in the exothermic process, the data of utilizing computing machine that temperature, pressure transducer are measured are gathered, and calculate the heat of heat accumulation chamber unit volume stored according to the thermodynamics correlation formula; According to the record of time, calculate fill, air and heat-storing device carry out heat interchange in the exothermic process speed.
3) security test: by repeatedly fill heat, heat release experiment, check whether heat accumulating leaks, and checks the leakproofness of whole heat accumulation chamber from the metallic conduit of splendid attire, whether have hot-air to leak.
4) estimate: by above-mentioned 1), 2), 3) test result, the overall evaluation is carried out in permanance, heat accumulation efficient and the security of whole device, see the designing requirement that whether reaches heat-storing device.
The present invention is simple and easy to operate: this device only by the switch of control air preheater and air heater just can fill, the switching of heat release experiment, finish fill, heat release circulates, and can well control the temperature of air by air heater.Data are directly gathered by computing machine, and can utilize related software to calculate testing data.
The present invention uses aerial condenser, and the hot-air that flows out in heat reservoir is carried out condensation, avoids the discharging of high temperature air to cause potential safety hazard.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the stereographic map of heat reservoir;
Fig. 3 is the side view (left side of Fig. 2 is looked) of heat reservoir;
Fig. 4 is the cut-open view of Fig. 3 along the A-A line;
Fig. 5 is the cut-open view of Fig. 3 along the B-B line;
Among the figure: 1-first pipeline, 2-air compressor, 3-air drying filtrator, the 4-air preheater, 5-air heater, the automatically controlled flow control valve of 6-, 7-first flow indicator, 8-heat reservoir (interior dress heat accumulating), 9-second flow indicator, the 10-aerial condenser, 11-first temperature and pressure transmitter, 12-computing machine (data acquisition and monitoring), 13-second temperature and pressure transmitter, 14-the 3rd temperature and pressure transmitter, 15-second pipeline; 16-heat accumulation chamber outer wall, 17-insulation material, 18-heat accumulation chamber interior walls, 19-metallic conduit, 20-bracing frame, 21-draft tube, 22-escape pipe, 23-heat accumulation chamber door.
Embodiment
In order to understand this device better, this device is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, heat reservoir fills the test and evaluation device of heat, exothermic process, and it comprises first pipeline 1, air compressor 2, air drying filtrator 3, air preheater 4, air heater 5, automatically controlled flow control valve 6, first flow indicator 7, second flow indicator 9, aerial condenser 10, first temperature and pressure transmitter 11, computing machine 12, second temperature and pressure transmitter 13, the 3rd temperature and pressure transmitter 14, second pipeline 15; The output terminal of air compressor 2 is connected with an end of first pipeline 1, the other end of first pipeline 1 is connected with the draft tube of heat reservoir 8, begins to be provided with successively air drying filtrator 3, air preheater 4, air heater 5, automatically controlled flow control valve 6, first flow indicator 7 from an end that links to each other with air compressor on first pipeline 1; One end of second pipeline 15 is connected with the escape pipe of heat reservoir 8, begins to be provided with successively second flow indicator 9, aerial condenser 10 from an end that links to each other with heat reservoir 8 on second pipeline 15; The air intake opening place of heat reservoir 8 is provided with first temperature and pressure transmitter 11, is provided with second temperature and pressure transmitter 13 in the heat reservoir, and the place, gas outlet of heat reservoir 8 is provided with the 3rd temperature and pressure transmitter 14; Automatically controlled flow control valve 6, first flow indicator 7, second flow indicator 9, first temperature and pressure transmitter 11, second temperature and pressure transmitter 13, the 3rd temperature and pressure transmitter 14 are linked to each other by the signal input port of lead with computing machine 12 respectively.
Fill thermal process:
When heat reservoir is filled the thermal process test, open 4 pairs of dry airs that enter of air preheater and preheat, open 5 pairs of air of air heater and further heat, with the high temperature air that produces in this analog solar heat generating.
After high temperature air entered heat reservoir to be tested 8, beginning was carried out heat interchange (heat reservoir fills heat) with heat accumulating (or claiming heat-storing material).The flow velocity of air can be by automatically controlled flow control valve 6 controls, and first flow indicator 7 shows that air enters heat reservoir flow velocity before, the flow velocity that second flow indicator 9 shows when air are come out by heat reservoir.At heat reservoir air intake opening, gas outlet and the inner temperature and pressure transmitter of placing temperature, the pressure at each position are measured and record.
Finish heat-exchanged air at last through being discharged into environment after aerial condenser 10 condensations with the heat accumulating in the heat reservoir.
Exothermic process:
The exothermic process test that heat reservoir is carried out is directly carried out after thermal process finishes filling, and close air preheater 4 and air heater 5 this moment, allows the air near room temperature directly enter heat reservoir.
After air enters heat reservoir to be tested 8, carry out heat interchange (heat reservoir heat release) with the heat accumulating of the inside (or claiming heat-storing material).The flow velocity of air is by automatically controlled flow control valve 6 controls, and first flow indicator 7 shows that air enters heat reservoir flow velocity before, the flow velocity that second flow indicator 9 shows when air are come out by heat reservoir.At heat reservoir air intake opening, gas outlet and the inner temperature and pressure transmitter of placing temperature, the pressure at each position are measured and record.
Air behind the absorption heat is through being discharged into environment after aerial condenser 10 condensations.
Fill in heat, the exothermic process, automatically controlled flow control valve 6 is by computing machine 12 monitoring; The time of each process (by the computing machine self-clocking), the data of first flow indicator 7, second flow indicator 9, first temperature and pressure transmitter 11, second temperature and pressure transmitter 13, the 3rd temperature and pressure transmitter 14 are also gathered by computing machine 12.Finish and fill after heat, the exothermic process, utilize computing machine 12 respectively the time, temperature, pressure, the data on flows that write down in two processes to be put and calculate in order the index of correlation data.
1) repeat above-mentioned two steps, what open and close air preheater 4 and air heater 5 can carry out heat reservoir repeatedly repeatedly fills heat, heat release experiment, the permanance of testing heat reservoir thus.2) heat accumulation efficiency test: fill, in the exothermic process, the data of utilizing computing machine that temperature, pressure transducer are measured are gathered, and calculate the heat of heat accumulation chamber unit volume stored according to the thermodynamics correlation formula; According to the record of time, calculate fill, air and heat-storing device carry out heat interchange in the exothermic process speed.3) security test: by repeatedly fill heat, heat release experiment, check whether heat accumulating leaks, and checks the leakproofness of whole heat accumulation chamber from the metallic conduit of splendid attire, whether have hot-air to leak.4) estimate: by above-mentioned 1), 2), 3) test result, the overall evaluation is carried out in permanance, heat accumulation efficient and the security of whole device, see the designing requirement that whether reaches heat-storing device.
As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, heat reservoir, it comprises heat accumulation chamber housing, insulation material 17, metallic conduit 19, bracing frame 20, draft tube 21, escape pipe 22, heat accumulation chamber door 23; Heat accumulation chamber housing is a rectangle, heat accumulation chamber housing is made up of heat accumulation chamber outer wall 16 and heat accumulation chamber interior walls 18, heat accumulation chamber outer wall 16 and heat accumulation chamber interior walls 18 adopt resistant to elevated temperatures steel plate to make, surround the incubation cavity of sealing between heat accumulation chamber outer wall 16 and the heat accumulation chamber interior walls 18, be filled with insulation material 17 (minimizing thermal loss) in the incubation cavity, one end and the heat accumulation chamber outer wall 16 of heat accumulation chamber door 23 are hinged, and when heat accumulation chamber door 23 was closed, heat accumulation chamber door 23 and heat accumulation chamber interior walls 18 surrounded the heat accumulation space of sealing; Draft tube 21 and escape pipe 22 be asymmetric to be arranged on that { draft tube 21 is positioned at a side of heat accumulation chamber housing on the housing of heat accumulation chamber, escape pipe 22 is positioned at the opposite side of heat accumulation chamber housing, draft tube 21 and escape pipe 22 are positioned at that (draft tube and escape pipe vertically there are differences on the short transverse on the different height, can fully carry out heat interchange), asymmetric setting makes gas and the heat interchange between the heat-storing material in the regenerative apparatus more abundant }, draft tube 21, escape pipe 22 communicate with the heat accumulation space respectively; At least be provided with one deck bracing frame 20 in the heat accumulation space and (among Fig. 4 be 6 layers, the number of plies is determined as required), bracing frame 20 is fixedlyed connected with heat accumulation chamber interior walls 18, be placed with metallic conduit 19 on the bracing frame 20, metallic conduit 19 adopts corrosion-and high-temp-resistant alloy steel (as: 1Cr18Ni9Ti or GH3044 alloy steel; Because the pyroconductivity height of metal, thereby improved the indoor heat exchanger effectiveness of heat accumulation), metallic conduit 19 is packaged with heat-storing material (Powdered) for U type (can reduce the encapsulation number of times) in the metallic conduit 19; Heat transfer medium in the heat accumulation space is gas (gases such as air, nitrogen).
Though the heat conductivity of gas is bad, its working range is big, simple to operate, avirulence, can not only with steam-powered steam turbine, can also directly utilize high temperature air to drive gas turbine, efficient is higher.
Heat-storing material (or claiming heat accumulating) can adopt metal, alloy, fuse salt or Na
2CO
3/ MgO composite phase-change material etc., as: aluminum alloy materials comprises that Al-Cu, Al-Mg, Al-Si are alloy; Be respectively the Al-Cu alloy (the quality percentage composition of Cu is 20%～61%) that contains Cu20%～61%, contain Mg16%～55% the Al-Mg alloy, contain the Al-Si alloy of Si3%～26%, and Al-x%Si-y%Cu (6＜x＜27, y＜5), Al-x%Cu-y%Mg (35＜x＜50,10＜y＜35), Al-x%Si-y%Mg (x＜20, y＜40) ternary alloy three-partalloy.
Is example with aluminium alloy as phase change heat storage material, during use, earlier Al alloy powder is packed in the metallic conduit, encapsulates again, and attention can not be filled fully, because certain thermal expansion can take place during the heat-storing material fusing.Opening heat accumulation chamber door then, metallic conduit can be put into heat accumulation space (heat accumulation is indoor) fixing, shuts heat accumulation chamber door at last.
During the solar heat-storing device accumulation of heat, to import the heat accumulation space from draft tube through the high temperature air of solar energy heating, by the heat-storing material in the high temperature air heating of metal pipeline, will be before aluminum alloy melting with the mode heat accumulation of sensible heat, aluminium alloy begins to melt and with the mode storing heat of latent heat of phase change when temperature reaches its fusing point.Because metal has very big energy storage density, therefore can store a large amount of heat energy in the whole device, and the metal heat-conducting coefficient is big, in the process that melts and solidify, have heat transfer efficiency faster.High temperature air has very little density, therefore the trend that come-up is arranged after it enters the heat accumulation space needs to rely on the pressure in heat accumulation space that it is driven out of, thereby fully contacts with heat-storing material layer by layer, increase the heat interchange between air and the heat-storing material, improved the efficient of device.When sun power weakens or need utilize heat energy, enter the heat accumulation chamber by escape pipe input cold air, because heat-storing material is in high temperature fused state, therefore thereby heat-storing material will be emitted latent heat of phase change by heat interchange and be added hot-air and heat energy is released and utilizes, when the liquid phase-change heat-storing material is cooled to phase transition temperature, the crystallization of liquid phase-change heat-storing material becomes solid-state, emits latent heat of phase change simultaneously.And this holding of phase change heat storage material-exothermic process reusable edible is more than thousand times.
Claims (2)
1. heat reservoir fills the test and evaluation device of heat, exothermic process, it is characterized in that it comprises first pipeline (1), air compressor (2), air drying filtrator (3), air preheater (4), air heater (5), automatically controlled flow control valve (6), first flow indicator (7), second flow indicator (9), first temperature and pressure transmitter (11), computing machine (12), second temperature and pressure transmitter (13), the 3rd temperature and pressure transmitter (14), second pipeline (15); The output terminal of air compressor (2) is connected with an end of first pipeline (1), the other end of first pipeline (1) is connected with the draft tube of heat reservoir (8), and first pipeline (1) is gone up and begun to be provided with successively air drying filtrator (3), air preheater (4), air heater (5), automatically controlled flow control valve (6), first flow indicator (7) from an end that links to each other with air compressor; One end of second pipeline (15) is connected with the escape pipe of heat reservoir (8), and second pipeline (15) is provided with second flow indicator (9); The air intake opening place of heat reservoir (8) is provided with first temperature and pressure transmitter (11), is provided with second temperature and pressure transmitter (13) in the heat reservoir, and the place, gas outlet of heat reservoir (8) is provided with the 3rd temperature and pressure transmitter (14); Automatically controlled flow control valve (6), first flow indicator (7), second flow indicator (9), first temperature and pressure transmitter (11), second temperature and pressure transmitter (13), the 3rd temperature and pressure transmitter (14) are linked to each other by the signal input port of lead with computing machine (12) respectively.
2. heat reservoir according to claim 1 fills the test and evaluation device of heat, exothermic process, it is characterized in that: second pipeline (15) is provided with aerial condenser (10), and second flow indicator (9) is positioned between aerial condenser (10) and the heat reservoir (8).
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| CN101587025B (en) * | 2009-06-19 | 2010-12-29 | 山东力诺瑞特新能源有限公司 | Test system and test method for solar heat collector |
| CN101504331B (en) * | 2009-02-27 | 2011-01-05 | 西安交通大学 | Simulating device for solar cavity type heat absorber |
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| CN100374824C (en) * | 2005-10-28 | 2008-03-12 | 中国船舶重工集团公司第七一一研究所 | Temperature-pressure sensor |
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| CN101504331B (en) * | 2009-02-27 | 2011-01-05 | 西安交通大学 | Simulating device for solar cavity type heat absorber |
| CN101587025B (en) * | 2009-06-19 | 2010-12-29 | 山东力诺瑞特新能源有限公司 | Test system and test method for solar heat collector |
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| CN102478447B (en) * | 2010-11-25 | 2015-08-19 | 上海梅山钢铁股份有限公司 | Volume of leaking air from vacuum chamber online test method and device |
| CN105092638A (en) * | 2015-08-26 | 2015-11-25 | 武汉理工大学 | Heat storage testing and evaluation system using heat transfer oil as heat transfer medium |
| CN107643187B (en) * | 2017-11-07 | 2023-09-05 | 北京奥博汽车电子电器有限公司 | Air Heater Comprehensive Performance Test System |
| CN107643187A (en) * | 2017-11-07 | 2018-01-30 | 北京奥博汽车电子电器有限公司 | Air heater comprehensive performance testing system |
| CN110333081A (en) * | 2019-07-16 | 2019-10-15 | 国电南京电力试验研究有限公司 | Turbine low pressure cylinder steam discharge mass dryness fraction on-line monitoring method |
| CN110333081B (en) * | 2019-07-16 | 2020-04-03 | 国电南京电力试验研究有限公司 | Method for online monitoring exhaust dryness of low-pressure cylinder of steam turbine |
| CN111023249A (en) * | 2019-11-25 | 2020-04-17 | 上海电气集团股份有限公司 | Electric boiler heating system, hot bin test platform and operation method thereof |
| CN111023249B (en) * | 2019-11-25 | 2021-10-29 | 上海电气集团股份有限公司 | Electric boiler heating system, hot bin test platform and operation method thereof |
| CN113000083A (en) * | 2019-12-18 | 2021-06-22 | 帝肯贸易股份公司 | Pipetting device and method |
| CN111413126A (en) * | 2020-04-14 | 2020-07-14 | 中国科学院工程热物理研究所 | Heat accumulation experimental system and control and detection device thereof |
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| CN115343083A (en) * | 2022-07-20 | 2022-11-15 | 西安交通大学 | Transient performance evaluation method of latent heat storage device |
| CN115343083B (en) * | 2022-07-20 | 2024-04-26 | 西安交通大学 | Transient performance evaluation method of latent heat reservoir |
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