CN102563934A - Heat collector material for solar heat airflow power generation - Google Patents
Heat collector material for solar heat airflow power generation Download PDFInfo
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- CN102563934A CN102563934A CN2011104143636A CN201110414363A CN102563934A CN 102563934 A CN102563934 A CN 102563934A CN 2011104143636 A CN2011104143636 A CN 2011104143636A CN 201110414363 A CN201110414363 A CN 201110414363A CN 102563934 A CN102563934 A CN 102563934A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
A heat collector material for solar heat airflow power generation is provided with a hollow PC (polycarbonate) plate, and carbon dioxide is filled in a cavity of the PC plate. The PC plate and the carbon dioxide are combined to form the heat collector material, the PC plate is light in weight, and the transmittance and the heat-insulation characteristic of the PC plate are better than those of common glass and hollow glass. The carbon dioxide gas has heat absorption and heat insulation functions. Solar radiation projected to the ground is mainly short-wave radiation and can be transmitted through a carbon dioxide layer to be projected into the ground, long-wave radiation generated after soil of the ground is heated is absorbed by the carbon dioxide in the heat collector material, and accordingly an effect of atmospheric warming is realized.
Description
Technical field
The present invention relates to a kind of solar utilization technique, relate in particular to and a kind of carbon dioxide and PC plate are applied to solar heat air-flow power generation and heat collection canopy material.
Background technology
The solar heat air-flow generation technology be a kind of be the electricity generation system of working medium with the air, solar light irradiation thermal-arrest canopy, air and soil canopy under (be system recuperation layer) of heating in the canopy; The heated air temperature raises; Density descends, and under the swabbing action of diversion tower, forms one powerful ascending air, drives the generating of wind turbine unit; Cold air around the thermal-arrest canopy replenishes and gets in the canopy simultaneously, forms continual air circulation and flows.The thermal-arrest canopy is the important component part of solar energy hot gas flow generating system, and it is to overall system efficiency and cost important influence.The transmissivity of thermal-arrest canopy cladding material directly determines to get into the intensity of illumination and the light quality (spectral component) of thermal-arrest canopy, also determined in the thermal-arrest canopy solar radiant energy and to the blocking capability of face of land soil heat radiation; The heat-transfer character of cladding material influences the heat insulation effect of thermal-arrest canopy; Thereby influence air themperature rising amplitude in the thermal-arrest canopy; The efficient of thermal-arrest canopy depends on above-mentioned factor to a great extent; Therefore, design is a kind of has a task of top priority that the material of transmitance and heat-insulating property preferably becomes raising solar energy hot gas flow generating system efficient.
Thermal-arrest canopy material commonly used at present has simple glass, double glazing and double-deck gas-flow closure glass.But the glass shock resistance is poor, and is broken easily, and the density of glass is very big, strict to the skeleton load-bearing.Double glazing is pumped into vacuum because of its interlayer cavity, forms negative pressure, in case the stressed fragmentation of glass will be exploded the danger of hurting sb.'s feelings.Double-deck gas-flow closure glass is in the glass sandwich cavity, to charge into inert gas, though can avoid blast to hurt sb.'s feelings, because of the thermal conductivity ratio air of inert gas is high a lot, so heat insulation effect is good inadequately, and cost is very high.
Through to existing literature retrieval, to the research of solar heat air-flow generation technology, mainly concentrate on system designed and improves on, uses the research of specifically installing rare to the solar heat air-flow generation technology.
Summary of the invention
The object of the present invention is to provide a kind of strength characteristics, security that can improve the thermal-arrest canopy, and improve the solar heat air-flow power generation and heat collection canopy material of thermal-arrest canopy collecting efficiency,
For achieving the above object, the technical scheme that the present invention adopts is: adopt the PC plate of hollow and in the cavity of PC plate, be filled with carbon dioxide.
The present invention is a kind of thermal-arrest canopy material that PC plate and carbon dioxide are combined, PC plate light weight, and also its transmitance and heat preservation property are better than simple glass and double glazing.Carbon dioxide has heat absorption and heat insulation function.The solar radiation that projects ground mainly is a shortwave radiation, can see through carbon dioxide layer and inject ground, and surface soil increases the long-wave radiation of emitting after warm and is absorbed by the carbon dioxide in the thermal-arrest canopy material, thereby produce the effect that atmosphere warms.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the PC plate that is filled with carbon dioxide, common PC plate, three kinds of material thermal conductivity comparison diagrams of simple glass;
Fig. 3 is that the PC plate that is filled with carbon dioxide, common PC plate, three kinds of materials of simple glass are at the transmissivity comparison diagram of different light wave sections to ultraviolet/visible/near infrared light;
Fig. 4 is the PC plate that is filled with carbon dioxide, common PC plate, three kinds of materials of the simple glass reflectivity comparison diagram to the different light wave sections of infrared light.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
Referring to Fig. 1, solar heat air-flow power generation and heat collection canopy material of the present invention adopts the PC plate 1 of hollow, and in the cavity 2 of PC plate 1, is filled with carbon dioxide.
The present invention is applied to solar heat air-flow power generation and heat collection canopy with PC plate and carbon dioxide; The PC plate is a kind of armorphous thermoplastic resin of high comprehensive performance; Have excellent electrical insulating property, extensibility, dimensional stability and chemical resistance, higher intensity, hear resistance and cold resistance.Contrast other material, the PC plate has lot of advantages.The a little higher than glass of its light transmittance, heat transfer coefficient are much smaller than glass, and operating temperature can be at-40 ℃～120 ℃.Between PC plate upper and lower surfaces, have air heat-insulation layer, wherein have the vertical partition of much arranging, avoided large-scale air circulation in the gap, thereby reduce scattering and disappearing of heat by a determining deviation.
The present invention adopts the carbon dioxide with heat absorption and heat insulating function, carbon dioxide is filled in the cavity of PC plate of sealing, makes thermal-arrest canopy material have good heat insulation effect.The solar radiation that projects ground mainly is a shortwave radiation; Can see through the thermal-arrest canopy and inject ground; And surface soil increases the long-wave radiation of emitting after warm by carbon dioxide absorption in the thermal-arrest canopy and reflection, produces similar greenhouse effects, makes that the air temperature rise is more remarkable below the thermal-arrest canopy.
The present invention proves through various experiments; The thermal conductivity factor of PC plate is much smaller than the thermal conductivity factor of simple glass; The common PC plate of the PC plate thermal conductivity ratio thermal conductivity factor that is filled with carbon dioxide is littler, can find out that the heat-insulating property of the PC plate that is filled with carbon dioxide is best; The PC plate is not too big in whole wave band transmitance fluctuation with the PC plate that is filled with carbon dioxide; More suitable with glassy phase than transmitance; In the reflectivity experiment, for long-wave radiation, the reflecting properties of glass is inferior to PC plate and the common PC plate that fills with carbon dioxide; In addition, the PC plate reflecting properties that fills with carbon dioxide is better than common PC plate slightly.Thereby the PC plate thermal conductivity factor of filling arbon dioxide gas is little, has good effect of heat insulation; The wave band transmitance is steady, has good light wave adaptability; The long-wave radiation reflectivity is high, can reflect the light wave radiation of soil and air under the thermal-arrest canopy, and endothermic effect is obvious.
Because the impact strength of PC plate is 80 times of glass; Weight is about the 1/12-1/15 of stack pile glass, but both hot bendings, but also clod wash overarch, shape such as semicircle; Construction safety is convenient, and lower price and long service life will be improved the economy of planning to build the large-scale synthesis system.
The inventor adopts the TC-II thermal conductivity measuring apparatus to utilize steady state method to measure the thermal conductivity factor of different materials, so as to comparing the heat conductivility of different materials.Referring to Fig. 2; The thermal conductivity factor of discovering the thermal conductivity ratio simple glass of common PC plate has reduced 85.73%; The common PC plate of the PC plate thermal conductivity ratio thermal conductivity factor that fills with carbon dioxide has reduced 15.92%; Under the constant situation of other experiment condition, the heat-insulating property of material is inversely proportional to the thermal conductivity factor of material, obviously is superior to simple glass and common PC plate so can be filled with the PC plate heat-insulating property of carbon dioxide.
The initial data of table 1 experimental bench device
Referring to Fig. 3, the inventor discovers that in ultraviolet ray/visible light subband, before wavelength 750nm, the transmitance of glass is higher than other two kinds of materials, and the PC plate transmitance of filling with carbon dioxide is higher than the PC plate; In the near infrared light part; Fill transmitance with the PC plate of carbon dioxide and common PC plate obviously greater than glass; Fill with the PC plate of carbon dioxide higher compared with common PC plate, so the PC plate through performance that wave band fills with carbon dioxide is superior to other two kinds of materials; And common PC plate is more higher than glass in this wave band transmitance, so wave band fills the PC plate better performances with carbon dioxide.In the far red light part, still difference is little with filling PC plate permeability with carbon dioxide for common PC plate, but sees that recently the transmitance of glass is more better mutually, so wave band glass through performance is better.In general, common PC plate is not too big in whole wave band transmitance fluctuation with the PC plate that fills with carbon dioxide, compares glass, and three kinds of materials are suitable in whole wave band transmitance.The PC plate and the seeing through of glassy phase comparison sunshine of therefore, filling with carbon dioxide influence not quite.
Referring to Fig. 4, the inventor discovers, for IR; Wave number is greater than 1300, a little higher than other the two kinds of materials of the reflectivity of glass, and the PC plate reflectivity that fills with carbon dioxide is better than common PC plate slightly; But work as wave number less than 1300; The reflectivity of glass sharply reduces, and is starkly lower than other two kinds of materials, and fills PC plate reflectivity with carbon dioxide a little more than common PC plate.Thermal-arrest canopy internal ground temperature range is about 40-60 ℃, and according to Wien's displacement law, the terrestrial surface radiation peak wavelength is between 8.7-9.25 μ m, and wave-number range is 1080-1149cm
-1, in this wave-number range, the energy of ground institute's radiation in unit interval, unit wavelength and unit solid angle is maximum; And wave number is less than 1300; Fill PC plate reflectivity with carbon dioxide greater than other materials, can the radiation from ground be reflected back, have good heat-insulating property.
Claims (1)
1. a solar heat air-flow power generation and heat collection canopy material is characterized in that: adopt the PC plate (1) of hollow and in the cavity (2) of PC plate (1), be filled with carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104143636A CN102563934A (en) | 2011-12-12 | 2011-12-12 | Heat collector material for solar heat airflow power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104143636A CN102563934A (en) | 2011-12-12 | 2011-12-12 | Heat collector material for solar heat airflow power generation |
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| CN102563934A true CN102563934A (en) | 2012-07-11 |
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| CN2011104143636A Pending CN102563934A (en) | 2011-12-12 | 2011-12-12 | Heat collector material for solar heat airflow power generation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964461A (en) * | 2015-06-19 | 2015-10-07 | 西安交通大学 | Solar water-working-medium cavity-type heat absorber |
| CN110398072A (en) * | 2019-08-01 | 2019-11-01 | 燕山大学 | Salt gradient solar pond |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007148976A1 (en) * | 2006-06-19 | 2007-12-27 | Bicotec As | A climate control device for a greenhouse |
| CN101671057A (en) * | 2009-10-14 | 2010-03-17 | 国家海洋局天津海水淡化与综合利用研究所 | Distillation and desalination system for comprehensively utilizing solar energy chimney and windmill and desalination method thereof |
| CN201443898U (en) * | 2009-06-03 | 2010-04-28 | 许刚 | Transparent plastic solar heat collecting device |
| CN201803483U (en) * | 2010-02-25 | 2011-04-20 | 王勇 | Flat-plate solar collector utilizing liquid to absorb heat |
-
2011
- 2011-12-12 CN CN2011104143636A patent/CN102563934A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007148976A1 (en) * | 2006-06-19 | 2007-12-27 | Bicotec As | A climate control device for a greenhouse |
| CN201443898U (en) * | 2009-06-03 | 2010-04-28 | 许刚 | Transparent plastic solar heat collecting device |
| CN101671057A (en) * | 2009-10-14 | 2010-03-17 | 国家海洋局天津海水淡化与综合利用研究所 | Distillation and desalination system for comprehensively utilizing solar energy chimney and windmill and desalination method thereof |
| CN201803483U (en) * | 2010-02-25 | 2011-04-20 | 王勇 | Flat-plate solar collector utilizing liquid to absorb heat |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964461A (en) * | 2015-06-19 | 2015-10-07 | 西安交通大学 | Solar water-working-medium cavity-type heat absorber |
| CN110398072A (en) * | 2019-08-01 | 2019-11-01 | 燕山大学 | Salt gradient solar pond |
| CN110398072B (en) * | 2019-08-01 | 2020-09-15 | 燕山大学 | Salt gradient solar pond |
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Application publication date: 20120711 |