CN101520241A - Across-waveform channel solar air thermal collector combining solid-solid phase transition heat-storage material - Google Patents
Across-waveform channel solar air thermal collector combining solid-solid phase transition heat-storage material Download PDFInfo
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- CN101520241A CN101520241A CN200910094077A CN200910094077A CN101520241A CN 101520241 A CN101520241 A CN 101520241A CN 200910094077 A CN200910094077 A CN 200910094077A CN 200910094077 A CN200910094077 A CN 200910094077A CN 101520241 A CN101520241 A CN 101520241A
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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
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Abstract
The invention relates to the technical field of solar energy utilization, in particular to an across-waveform channel solar air thermal collector combining solid-solid phase transition heat-storage material, comprising a transparent cover plate, a frame, a heat-insulation layer, a sine-wave-shaped hear absorption plate, a sine-wave-shaped burble bottom plate, solid-solid phase transition heat storage material, an air filter, an air inlet and an air outlet, wherein the sine-wave-shaped hear absorption plate and the sine-wave-shaped burble bottom plate of the thermal collector form an across-waveform channel. After entering the thermal collector through the air filter, the air is burbled by the sine-wave-shaped burble bottom plate so as to ensure that air sufficiently exchanges heat with the sine-wave-shaped hear absorption plate in the across-waveform channel and the heat exchange area of the sine-wave-shaped hear absorption plate is increased. Prepared polylol solid-solid phase transition heat-storage material is added to a metal sheet and encapsulated in an upwards convex wave-shaped groove in the lower surface of the sine-wave-shaped hear absorption plate, therefore, when phase change occurs, the polylol solid-solid phase transition heat-storage material can adversely absorb and release a great deal of heat and has small volume change, light degree of supercooling without toxicum, erosion or liquid phase. The invention can ensure that the temperature of the air outlet can be kept in a more stable range when the air thermal collector works, reduce the heat loss, improve the efficiency and prolong the working time of the air thermal collector.
Description
Technical field:
The present invention relates to the solar energy utilization technique field, relate in particular to a kind of combine with the solid-solid phase change heat-storing material intersect the waveform channel solar air heat collector.
Background technology:
Plate air collector can be divided into osmosis type and non-osmosis type two big classes by absorber plate form and inner air mobility status, the characteristics of non-osmosis type heat collector be air on absorber plate or below flow through, can not penetrate absorber plate itself, its advantage is simple in structure, resistance is little, cost is low, and shortcoming is that efficient is lower.Conduct heat for strengthening air, can on absorber plate, increase measures such as fin usually, but also can increase flow resistance; Osmosis type heat collector absorber plate characteristics are that air can pass from absorber plate, and heat exchange area is bigger, and diabatic process is strengthened, and its advantage is that efficient is higher, and shortcoming is the cost height, and resistance is big.
In existing solar energy air heat collector practical application, when solar radiation variations was big, the outlet temperature fluctuation of air collector was also bigger, and comparatively stable hot-air can not be provided.
Compare with general sensible heat energy storage, comparing storage heat, to have a storage heat density big, and the long-pending volume of storage thermal capacitance is little, and heat is imitated high, and the heat absorption heat release is advantages such as thermostatic process.Gu but--liquid phase change heat-storing material is crossed seriously cold and stratified liquid is taken place easily, causes heat retention characteristic to worsen.Because the existence of liquid phase often has certain corrosivity and toxicity, need resistant material such as metal, plastics etc. to make airtight container in addition, make the price of container often be higher than the price of heat-storing material.In addition, Gu--the liquid phase change often causes the phase-change material volume to have greatly changed, bring many problems for using system and manufacturing process, with solid--liquid phase becomes heat-storing material and compares, Gu--though solid phase becomes heat-storing material to be had outside the deficiency that phase change heat storage is little and phase transition temperature is high, but it has solid--liquid phase becomes some incomparable advantages of heat-storing material, little as Volume Changes before and after the phase transformation, do not have liquid phase during phase transformation and produce, do not have and advantage such as leak, material is little to the corrosion of volume, long service life, degree of supercooling are light.
Polyalcohol solid-solid phase change heat-storing material is that the storage thermal efficiency is higher, stability is heat-storing material preferably, it has the solid-solid phase-change temperature of broad, the heat of transformation under the different phase transition temperatures is also higher, when solid-solid phase-change takes place, can reversibly absorb and discharge a large amount of heat, and Volume Changes is little, degree of supercooling is light, there are not advantages such as liquid phase in nontoxic no burn into.Each polyalcohol all has the certain transition temperature and the heat of transformation, in order to widen temperature range, to adapt to the requirement of different temperatures, also can press different proportion to different polyol masses and mix the formation alloy.
Summary of the invention:
The present invention is a kind of combine with the solid-solid phase change heat-storing material intersect the waveform channel solar air heat collector.Its heat collector adopts sine-shaped absorber plate and sinusoidal wave shape flow-disturbing base plate, compare with the plate air collector of analog structure size, not only increased heat exchange area, also increase the disturbance of air simultaneously, improved the coefficient of heat transfer, can not make flow resistance excessive (more much smaller) again than V-type plate.
Because the air collector operating temperature is higher, thereby heat waste is bigger, efficient is lower, after adding polyalcohol solid-solid phase change heat-storing material, when operating temperature higher and be higher than the phase transition temperature of heat-storing material after, phase-change material heat absorption makes operating temperature and reduces when not adding heat-storing material; And after dropping to the phase transition temperature that is lower than phase change heat-storing material when operating temperature, heat-storing material begins heat release, makes the heat collector outlet temperature maintain more stable temperature range.So not only reduce the heat waste of air collector, improved efficient, also prolonged the working time.
For achieving the above object, the technical scheme that patent of the present invention adopts is: heat collector comprises that transparent cover plate, frame, heat-insulation layer, sinusoidal wave shape absorber plate and sinusoidal wave shape flow-disturbing base plate constitute air flow channel, in the absorber plate upper surface epirelief waveform groove is the solid-solid phase change heat-storing material, air collector inlet and outlet, on the air collector inlet filter course is set, air outlet slit can be provided with different structures as required.
Air flow channel is reached by the sinusoidal wave shape absorber plate and the sinusoidal wave shape flow-disturbing base plate of absorber plate quadrature constitutes, cavity sealing between sinusoidal wave shape absorber plate and transparent cover plate, sinusoidal wave shape absorber plate streamwise is vertically placed, upper surface is a coating for selective absorption, places pre-processed solid-solid phase change heat-storing material in the epirelief waveform groove of sinusoidal wave shape absorber plate lower surface.The sinusoidal wave shape absorber plate can be processed as different geometries as required, thereby has than the bigger different daylighting area of dull and stereotyped absorber and hold more solid-solid phase change heat-storing material.Quadrature is placed sinusoidal wave shape flow-disturbing base plate and also can be required be processed as different geometries according to different heat exchange properties and resistance, thereby has different flow-disturbing intensity when air is flowed.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the partial enlarged drawing at 6 places among Fig. 1.
The specific embodiment:
See shown in Figure 1ly, the present invention includes transparent cover plate 1, frame 2, heat-insulation layer 3, sinusoidal wave shape absorber plate 4, sinusoidal wave shape flow-disturbing base plate 5, solid-solid phase change heat-storing material 6, air filter 7, air intake 8, air outlet slit 9.
Described sinusoidal wave shape absorber plate 4 and sinusoidal wave shape flow-disturbing base plate 5 can design as required and be processed as difform sinusoidal wave shape.
Because the air collector operating temperature is higher, select PG (trimethylolethane PG--pentaglycerine, C
5H
12O
3, transition temperature is 81.7 ℃, enthalpy of transition is 193J/g) and as solid-solid phase change heat-storing material 6.For improve the heat transfer property difference of polyol masses when reality is used this-characteristics, consider the moderate of its heat absorption rate of heat release simultaneously, be packaged in the epirelief waveform groove of waveform absorber plate lower surface after the polyalcohol solid-solid phase change heat-storing material for preparing is added sheet metal by different weight ratios.
After solar radiation sees through transparent cover plate 1, heating sinusoidal wave shape absorber plate 4, air by air intake 8 after air filter 7 filters, enter the intersection waveform channel of forming by sinusoidal wave shape absorber plate 4, sinusoidal wave shape flow-disturbing base plate 5, by sinusoidal wave shape flow-disturbing base plate 5 flow-disturbings, make air fully heat exchange of quilt in runner, after air outlet slit 9 flows out to use occasion.
When solar radiation bigger, when sinusoidal wave shape absorber plate 4 temperature are higher than the transition temperature of solid-solid phase change heat-storing material 6, solid-solid phase change heat-storing material 6 begins to absorb heat, thereby the amplitude that the temperature that makes sinusoidal wave shape absorber plate 4 raises with the enhancing of solar radiation eases up or no longer continues and raises, thereby makes the temperature of air outlet slit 9 remain on comparatively stable status; When solar radiation diminished, sinusoidal wave shape absorber plate 4 temperature were lower than the transition temperature of solid-solid phase change heat-storing material 6, and solid-solid phase change heat-storing material 6 begins to emit heat, and the temperature fluctuation of air outlet slit 9 is reduced.
The above embodiment is a representative instance of the present invention, is not to limit the scope of the present invention, thus all according to the described structure of the present patent application claim, feature, and the equivalence done of principle change, all should comprise in the patent claim of the present invention.
Claims (6)
1. the intersection waveform channel solar air heat collector in conjunction with the solid-solid phase change heat-storing material is characterized in that this heat collector transparent cover plate (1), frame (2), heat-insulation layer (3), sinusoidal wave shape absorber plate (4), sinusoidal wave shape flow-disturbing base plate (5), solid-solid phase change heat-storing material (6), air filter (7), air intake (8), air outlet slit (9) composition.
2. solar energy air heat collector according to claim 1 is characterized in that air flow channel is reached by sinusoidal wave shape absorber plate (4) and the sinusoidal wave shape flow-disturbing base plate (5) of absorber plate quadrature constitutes.
3. solar energy air heat collector according to claim 1 is characterized in that sinusoidal wave shape absorber plate (4) and sinusoidal wave shape flow-disturbing base plate (5) can be the sinusoidal waveform plates of different geometric scales.
4. solar energy air heat collector according to claim 1 is characterized in that cavity sealing between sinusoidal wave shape absorber plate (4) and transparent cover plate (1), and sinusoidal wave shape absorber plate (4) streamwise is vertically placed.
5. solar energy air heat collector according to claim 1 is characterized in that the solid-solid phase change heat-storing material (6) that encapsulation prepares in advance in the epirelief waveform groove of sinusoidal wave shape absorber plate (4) lower surface.
6. solar energy air heat collector according to claim 1 is characterized in that being prepared from after solid-solid phase change heat-storing material (6) can add sheet metal by different weight ratios.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910094077A CN101520241A (en) | 2009-02-03 | 2009-02-03 | Across-waveform channel solar air thermal collector combining solid-solid phase transition heat-storage material |
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| CN200910094077A CN101520241A (en) | 2009-02-03 | 2009-02-03 | Across-waveform channel solar air thermal collector combining solid-solid phase transition heat-storage material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893339A (en) * | 2010-08-30 | 2010-11-24 | 上海交通大学 | Separation-type vacuum tube and sleeve combinational high-temperature heat reservoir |
| CN101915465A (en) * | 2010-08-30 | 2010-12-15 | 上海交通大学 | Solar heat storing and collecting device |
| CN103032971A (en) * | 2012-12-15 | 2013-04-10 | 华南理工大学 | Microscale-channel solar heat collector |
| CN105222369A (en) * | 2015-11-10 | 2016-01-06 | 农业部规划设计研究院 | Solar energy heat-collecting heat-storage radiator |
| CN108826708A (en) * | 2018-07-11 | 2018-11-16 | 中山大学 | A kind of intersecting scaling formula solar energy heat absorbing device and method |
-
2009
- 2009-02-03 CN CN200910094077A patent/CN101520241A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893339A (en) * | 2010-08-30 | 2010-11-24 | 上海交通大学 | Separation-type vacuum tube and sleeve combinational high-temperature heat reservoir |
| CN101915465A (en) * | 2010-08-30 | 2010-12-15 | 上海交通大学 | Solar heat storing and collecting device |
| CN103032971A (en) * | 2012-12-15 | 2013-04-10 | 华南理工大学 | Microscale-channel solar heat collector |
| CN105222369A (en) * | 2015-11-10 | 2016-01-06 | 农业部规划设计研究院 | Solar energy heat-collecting heat-storage radiator |
| CN108826708A (en) * | 2018-07-11 | 2018-11-16 | 中山大学 | A kind of intersecting scaling formula solar energy heat absorbing device and method |
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Application publication date: 20090902 |