CN103344052A - Solar collector system based on heat pipe natural circulation - Google Patents

Solar collector system based on heat pipe natural circulation Download PDF

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Publication number
CN103344052A
CN103344052A CN2013103037342A CN201310303734A CN103344052A CN 103344052 A CN103344052 A CN 103344052A CN 2013103037342 A CN2013103037342 A CN 2013103037342A CN 201310303734 A CN201310303734 A CN 201310303734A CN 103344052 A CN103344052 A CN 103344052A
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China
Prior art keywords
heat
evaporation
solar thermal
natural circulation
heat pipe
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Pending
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CN2013103037342A
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Chinese (zh)
Inventor
江劲松
季弘
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HUNAN LANHAI ENERGY TECHNOLOGY Co Ltd
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HUNAN LANHAI ENERGY TECHNOLOGY Co Ltd
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Priority to CN2013103037342A priority Critical patent/CN103344052A/en
Publication of CN103344052A publication Critical patent/CN103344052A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The invention relates to a solar collector system based on heat pipe natural circulation. The system is mainly composed of an evaporation cavity, an evaporation passageway, a condensing cavity, a condensing passageway and a plate-type heat pipe solar collector, wherein a heat collection cavity of the plate-type heat pipe solar collector is utilized as the evaporation cavity, the evaporation cavity is connected with plate-type heat pipes in the collector, the evaporation cavity, the evaporation passageway, the condensing cavity and the condensing passageway form an independent loop heat pipe, solar energy absorbed by the solar collector can be automatically delivered, in a thermal mode, to a heat storage water tank which is connected with the condensing cavity, therefore, a solar hot water natural circulation system is formed, and heat can be efficiently delivered. The solar photo-thermal circulation system has the advantages of being simple in system flow, high in heat transfer efficiency, free of moving parts, low in cost, strong in pressure bearing capacity, stable in heat delivery, simple and convenient to install and the like, and is a novel and efficient solar hot water natural circulation system.

Description

A kind of solar thermal collection system based on the heat pipe Natural Circulation
Technical field
The present invention relates to the solar energy utilization technique field, particularly a kind of solar thermal collection system based on the heat pipe Natural Circulation.
Background technology
Aggravation along with energy crisis; solar building integrated solar thermal utilization is people's attention extremely; in China solar water heater family, be in the flat plate solar water heater of weak tendency status, market always; because it is compared with the glass tube with vacuum solar thermal collector; be easy to and build combination, thereby obtain application more and more widely.Particularly in recent years, people have researched and developed a kind of plate-type heat-pipe that adopts as the flat-plate solar collector of heat conducting element,, bearing capacity good with its freeze proof resistance to frost is strong, no backheat, not overheated, non-scaling, plurality of advantages such as not only thin but also light, becomes the novel flat-plate solar thermal collector that has development potentiality.
The solar heat-collection plate of flat panel solar heat collecting system and water tank generally are partial installations, and the hot water circuit mode has two kinds, and a kind of is the forced circulation mode, and another kind is natural circulation mode.Forced circulation is to adopt hot water circulating pump in system, forced circulation by circulating pump, the heat that the thermal-arrest plate is absorbed constantly is sent in the heat storage water tank, thereby the water in the heat storage water tank is heated, this system also will adopt expansion valve, relief valve except adopting circulating pump, so system complex, cost is higher, and fault rate is big; Natural Circulation is that heat storage water tank is placed on the solar heat-collection plate, density contrast after utilizing medium to be heated is realized flowing of circulation line medium, thereby constantly solar heat is delivered in the heat storage water tank, though this system is comparatively easy, but heat exchange efficiency is lower, toggle speed is slow, heat transfer is unstable, mounting condition requires height, has influenced solar thermal utilization efficient.
The latter will be radiated at solar heat on the solar heat-collection plate by the main channel of flowing through of the liquid branch road in the copper pipe, and in heat storage water tank, thereby the passage of heat that liquid is flowed through is longer with heat delivery.If with the evaporation cavity of plate-type heat-pipe solar thermal collector heat collector cavity as loop circuit heat pipe, spontaneously heat is passed to the condensation chamber that links to each other with heat storage water tank by loop circuit heat pipe, to be conducive to heat and efficiently be delivered in the heat storage water tank, a kind of collecting system of Natural Circulation efficiently of can yet be regarded as.
Summary of the invention
The object of the invention is: at aforesaid existing solar thermal collection system forced circulation mode system complex, cost height, and natural circulation mode efficient is low, unsettled defective, a kind of novel photo-thermal natural cycle system that is used for the plate-type heat-pipe solar thermal collector is provided, this photo-thermal natural cycle system has advantages such as system flow is simple, heat transfer efficiency is high, movement-less part, cost is low, bearing capacity is strong, heat transfer is stable, simple installation, this solar water heating system is simply efficient, economical and practical, is conducive to realize solar building integrated.
Technical scheme of the present invention is, a kind of solar thermal collection system based on the heat pipe Natural Circulation, this system is mainly by evaporation cavity, evaporation channel, condensation chamber, condensation channel and plate-type heat-pipe solar thermal collector are formed, with the heat collector cavity of plate-type heat-pipe solar thermal collector as evaporation cavity, evaporation cavity links to each other with the plate-type heat-pipe of heat collector, evaporation cavity, evaporation channel, condensation chamber and condensation channel are formed an independently loop circuit heat pipe, in the heat storage water tank that solar heat is delivered to condensation chamber links to each other that can automatically solar thermal collector be absorbed, thereby form the solar water natural cycle system, and efficiently transmit heat.
Below the present invention made further specify.
Described solar thermal collection system based on the heat pipe Natural Circulation, it is characterized in that being filled with in the loop that evaporation cavity, evaporation channel, condensation chamber and condensation channel form the working medium of phase transformation effect, when evaporation cavity is met when hot, working medium in the evaporation cavity is subjected to thermal evaporation and heat absorption, and steam flows to condensation chamber by evaporation channel; The cold water in the heat storage water tank is heated in steam condensation and heat release during by condensation chamber; Then, working medium is got back to heat absorption again in the evaporation cavity by condensation channel, and so circulation is up to the water in the heat storage water tank is heated.In this loop circuit heat pipe, the evaporation channel sectional area is processed with wing in triangular form, the square type etc. greater than condensation channel in the condensation channel, and its capillarity is greater than evaporation channel.The built-in capillary wick of evaporation channel.
Described solar thermal collection system based on the heat pipe Natural Circulation is characterized in that condensation chamber links to each other with heat storage water tank, and condensation chamber places heat storage water tank directly and water carries out heat exchange.Condensation chamber places outside the heat storage water tank, built-in heat exchange coil in the condensation chamber, and external heat storage water tank carries out heat exchange.
Described solar thermal collection system based on the heat pipe Natural Circulation is characterized in that evaporation cavity adopts the condensation end of welding or the mode of glueing joint and many plate-type heat-pipes in the solar thermal collector to fit.The condensation end of plate-type heat-pipe inserts in the evaporation cavity.
Described for the plate-type heat-pipe solar thermal collector, it is characterized in that being formed by solar absorber plate and the applying of Duo Gen novel plate type heat pipe, or coat heat-absorbing material on the employing heat pipe and make.Heat-absorbent surface Chaoyang in the solar heat-collection plate absorbs solar heat, and the plate-type heat-pipe that heat transferred is fitted tightly with it, plate-type heat-pipe efficiently passes to heat the heat collector cavity of fitting with plate-type heat-pipe, with the evaporation cavity of heat collector cavity as loop circuit heat pipe, by loop circuit heat pipe heat is delivered in the heat storage water tank again.
Described novel plate type heat pipe inside arranges the micro heat pipe array of a plurality of independent operatings, can solve the problem of utilizing the repeatedly thermal contact resistance that conventional circular heat pipe must occur, has greatly improved the reliability of heat exchange area and the integral heat pipe of equivalent steam.She Ji novel flat-plate heat collector has overcome many shortcomings of existing solar thermal collector thus.
As known from the above, the present invention is a kind of solar thermal collection system based on the heat pipe Natural Circulation, and its good effect is as follows.
(1) very simple, the simple installation, with low cost of solar water heating system flow process of the present invention solved existing solar thermal collection system forced circulation mode system complex, cost height, and conventional natural circulation mode efficient is low, problem of unstable.
(2) because in the solar thermal collection system based on the heat pipe Natural Circulation of the present invention, loop circuit heat pipe heat transmission capacity comes from the effect of self liquid phase-change, whole heat transfer process is spontaneous carrying out, need not add circulating pump, the expense that has reduced operation and safeguarded, be a kind of novel solar energy Natural Circulation thermal-arrest mode, such solar energy system is particularly suitable for partial installation under construction, realizes solar building integrated.
(3) owing to compare with the liquid temperature differential mode of carrying out Natural Circulation in the general tube road, the loop circuit heat pipe heat transfer efficiency is much higher, can conduct heat spontaneously, rapidly, thereby make this solar water heating system heat transference efficiency very high, and it is stable to conduct heat.
(4) because the solar heat circulatory system of the present invention adopts is the heat transfer type of indirect type, thereby the water supply end bearing capacity of heat storage water tank is strong, and bearing capacity only depends on the pressure-bearing of water tank.
(5) heat transfer of loop circuit heat pipe is that evaporation cavity is met thermal evaporation, steam flows to condensation chamber condensation heat release, is back to heat absorption again in the evaporation cavity by condensation channel again by evaporation channel, circulation is carried out like this, can control the highest water temperature in the heat storage water tank by the character of working medium in the loop circuit heat pipe like this, and can not produce superheating phenomenon.
Description of drawings
Fig. 1 is the embodiment schematic diagram of solar thermal collection system of the present invention.
Fig. 2 is the embodiment schematic diagram that plate-type heat-pipe solar thermal collector of the present invention links to each other with evaporation cavity.
Fig. 3 is plate-type heat-pipe and evaporation cavity relative position embodiment schematic diagram.
In the drawings:
1-evaporation cavity (heat collector cavity), 2-evaporation channel, 3-condensation chamber,
4-condensation channel, 5-solar heat-collection plate, 6-heat storage water tank,
7-absorber plate, 8-plate-type heat-pipe, 9-insulation material,
10-aluminum alloy frame, 11-transparent glass, 12-backboard.
The specific embodiment
As shown in Figure 1, this is the embodiment for the automatic circulation device of warm water of heat pipe solar thermal collector, this thermocirculator is mainly by evaporation cavity 1, evaporation channel 2, condensation chamber 3, condensation channel 4 and plate-type heat-pipe solar thermal collector 5 are formed, plate-type heat-pipe 8 evaporation ends outer walls link to each other with the tube wall way of contact in the outer wall of evaporation cavity 1 and the plate-type heat-pipe solar thermal collector 5, condensation chamber 1 places heat storage water tank 6, evaporation cavity 1, evaporation channel 2, condensation chamber 3 is formed a loop circuit heat pipe with condensation channel 4, the solar heat that can automatically solar heat-collection plate be absorbed passes in the heat storage water tank 6 that links to each other with condensation chamber 3, thereby form the solar water natural cycle system, and efficiently transmit heat.
As shown in Figure 2, this is the embodiment that the plate-type heat-pipe solar thermal collector links to each other with evaporation cavity, the plate-type heat-pipe solar thermal collector is made up of transparent glass 11, absorber plate 7, plate-type heat-pipe 8, insulation material 9, backboard 12 and aluminum alloy frame 10, heat collector cavity is made the evaporation cavity 1 of above-mentioned loop circuit heat pipe device, evaporation cavity 1 places the back of plate-type heat-pipe 8, the mode indirect heat transfer that its outer wall and the outer wall of plate-type heat-pipe 8 evaporation ends contact with tube wall.
As shown in Figure 3, this is the another embodiment of plate-type heat-pipe and evaporation cavity relative position in the solar thermal collector, and in this embodiment, plate-type heat-pipe 8 directly inserts in the evaporation cavity 1 of loop circuit heat pipe, and the evaporation ends of plate-type heat-pipe 8 contacts with working medium in the evaporation cavity 1.

Claims (9)

1. solar thermal collection system based on the heat pipe Natural Circulation, it is characterized in that, this system mainly is made up of evaporation cavity, evaporation channel, condensation chamber, condensation channel and plate-type heat-pipe solar thermal collector, and evaporation cavity, evaporation channel, condensation chamber and condensation channel are formed an independently loop circuit heat pipe.
2. according to the described solar thermal collection system based on the heat pipe Natural Circulation of claim 1, it is characterized in that heat collector cavity with the plate-type heat-pipe solar thermal collector as evaporation cavity, evaporation cavity links to each other with plate-type heat-pipe in the heat collector.
3. according to the described solar thermal collection system based on the heat pipe Natural Circulation of claim 1, it is characterized in that being filled with in the loop that evaporation cavity, evaporation channel, condensation chamber and condensation channel form the working medium of phase transformation effect.
4. according to claim 1,2 described solar thermal collection systems based on the heat pipe Natural Circulation, it is characterized in that condensation chamber places heat storage water tank directly and water carries out heat exchange.
5. according to claim 1,2 described solar thermal collection systems based on the heat pipe Natural Circulation, it is characterized in that condensation chamber places outside the heat storage water tank, built-in heat exchange coil in the condensation chamber, external heat storage water tank carries out heat exchange.
6. according to claim 1,2 described solar thermal collection systems based on the heat pipe Natural Circulation, it is characterized in that evaporation cavity adopts the condensation end of welding or the mode of glueing joint and many plate-type heat-pipes in the solar thermal collector to fit.
7. according to claim 1,2 described solar thermal collection systems based on the heat pipe Natural Circulation, it is characterized in that the condensation end of plate-type heat-pipe inserts in the evaporation cavity.
8. according to the described solar thermal collection system based on the heat pipe Natural Circulation of claim 1, it is characterized in that the evaporation channel sectional area greater than condensation channel, be processed with wing in triangular form, the square type etc. in the condensation channel, its capillarity is greater than evaporation channel.
9. according to the described solar thermal collection system based on the heat pipe Natural Circulation of claim 1, it is characterized in that the built-in capillary wick of evaporation channel.
CN2013103037342A 2013-07-19 2013-07-19 Solar collector system based on heat pipe natural circulation Pending CN103344052A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108917439A (en) * 2018-08-30 2018-11-30 无锡格林沃科技有限公司 New-type phase change radiator
CN110736374A (en) * 2018-04-03 2020-01-31 青岛鑫众合贸易有限公司 heat accumulator capable of automatically heating according to temperature of heat accumulation material
CN112594969A (en) * 2020-12-15 2021-04-02 上海电力大学 Nano-fluid micro-channel photovoltaic-solar heat pump system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686961A (en) * 1985-11-01 1987-08-18 John D. Garrison Integrated solar thermal energy collector system
CN102102909A (en) * 2011-03-16 2011-06-22 黄永伟 Pressure-bearing natural circulation solar water heater
CN103075818A (en) * 2013-01-28 2013-05-01 大厂菲斯曼太阳能集热器有限公司 Heat transmission method and system for heat-pipe-type solar hot water system
CN203375741U (en) * 2013-07-19 2014-01-01 湖南蓝海能源科技有限公司 Automatic hot water circulation device based on heat pipe solar thermal collector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686961A (en) * 1985-11-01 1987-08-18 John D. Garrison Integrated solar thermal energy collector system
CN102102909A (en) * 2011-03-16 2011-06-22 黄永伟 Pressure-bearing natural circulation solar water heater
CN103075818A (en) * 2013-01-28 2013-05-01 大厂菲斯曼太阳能集热器有限公司 Heat transmission method and system for heat-pipe-type solar hot water system
CN203375741U (en) * 2013-07-19 2014-01-01 湖南蓝海能源科技有限公司 Automatic hot water circulation device based on heat pipe solar thermal collector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110736374A (en) * 2018-04-03 2020-01-31 青岛鑫众合贸易有限公司 heat accumulator capable of automatically heating according to temperature of heat accumulation material
CN110736374B (en) * 2018-04-03 2021-10-08 郑坤 Heat accumulator capable of automatically heating according to temperature of heat storage material
CN108917439A (en) * 2018-08-30 2018-11-30 无锡格林沃科技有限公司 New-type phase change radiator
CN108917439B (en) * 2018-08-30 2024-04-19 无锡格林沃科技有限公司 Phase change radiator
CN112594969A (en) * 2020-12-15 2021-04-02 上海电力大学 Nano-fluid micro-channel photovoltaic-solar heat pump system

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Application publication date: 20131009