CN201875960U - Phase change heat accumulating solar water heater - Google Patents
Phase change heat accumulating solar water heater Download PDFInfo
- Publication number
- CN201875960U CN201875960U CN2010205095202U CN201020509520U CN201875960U CN 201875960 U CN201875960 U CN 201875960U CN 2010205095202 U CN2010205095202 U CN 2010205095202U CN 201020509520 U CN201020509520 U CN 201020509520U CN 201875960 U CN201875960 U CN 201875960U
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- heat
- pipe
- storage tank
- water heater
- phase change
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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
- Y02E10/44—Heat exchange systems
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model is a solar water heater with phase change materials as a heat accumulating medium, solving the problem that poor heat-conducting performance and fluidity of phase change materials of current phase change heat accumulating solar water heaters can not well transform solar energy to heat energy. The solar water heater in the utility model comprises a heat accumulating tank and a solar heat collector; the internal of the heat accumulating tank is provided with phase change materials and a finned tube heat exchanger, the finned tube heat exchanger almost fills the whole heat accumulating tank, the heat collector is connected with a condenser tube of the heat accumulating tank via a steam tube and a liquid tube. Since the solar water heater in the utility model adopts the phase change materials as the heat accumulating medium, the heat accumulating capability is several times or even more the heat accumulating capability of a common solar water heater, the solar water heater can store more heat for use in cloudy or rainy days, in addition, can greatly reduce the volume of the thermal storage tank, and via adopting a split structure, can be perfectly combined with buildings; the heat accumulating tank doesn't bear pressure, facilitating manufacture and making cost low, hot water outlet is in a mode of pressure bearing.
Description
Technical field
The utility model relates to solar water heater, specifically, be a kind of be the solar water heater of heat storage medium with the phase-change material.
Technical background
Prior solar water heater be with water as heat storage medium, it is that the rising (sensible heat) that utilizes water temperature comes accumulation of heat, thereby heat storage capacity is very low; And along with the rising of water temperature, its dispersed heat is also more.
Therefore, utilize the heat storage medium of phase-change material, can improve the heat storage capacity of water heater greatly as solar water heater.Though also having considered, some patents utilize the heat storage medium of phase-change material as solar water heater, but they have ignored a bit, the heat conductivility and the mobile performance that are exactly these phase-change materials are all very poor, and the heat energy that can not well solar energy be changed is passed to the problem of phase-change material.For example, only the heat that solar thermal collector is obtained passes to the bottom of heat storage tank, although by fin, also is difficult to heat is passed to the top of heat storage tank.
Summary of the invention
To be solved in the utility modelly be: the heat conductivility of existing phase change thermal storage solar water heater phase-change material and mobile performance are all very poor, and the heat energy that can not well solar energy be changed be passed to the problem of phase-change material.
Phase change thermal storage solar water heater described in the utility model comprises heat storage tank and solar thermal collector; Between the inner bag of heat storage tank and the shell heat-insulation layer is arranged, also be provided with water inlet and delivery port on the heat storage tank.Phase-change material is housed in heat storage tank; Finned tube exchanger is arranged in the heat storage tank, and finned tube exchanger is full of whole heat storage tank, is provided with condenser pipe and heat exchanging water pipe in the finned tube exchanger, and condenser pipe and heat exchanging water pipe are spaced in finned tube exchanger; Also being provided with the interface that links to each other with condenser pipe on the heat storage tank---steam pipe interface and liquid interface tube, heat exchanging water pipe's two ends link to each other with delivery port with water inlet respectively, are provided with a phase-change material in addition and fill mouth.Described finned tube exchanger almost is full of whole heat storage tank, and phase-change material is full of between the fin of whole finned tube exchanger except that a little expansion space is left at the heat storage tank top.Link by a steam pipe and a liquid pipe between the heat pipe evaporation ends of heat collector and the condenser pipe of heat storage tank, steam pipe and liquid pipe are outside equipped with muff; An interface of heat collector links by an angle valve and liquid pipe.Angle valve except that possess with the joining function of liquid pipe, also possess the function of closing automatically after the filled working medium.The working medium that fills can be water, alcohol, acetone.
Adopt finned tube exchanger, finned tube exchanger almost is full of whole heat storage tank, and condenser pipe and heat exchanging water pipe are spaced the measure of grade in finned tube exchanger, exactly in order to allow phase-change material fully contact with finned tube exchanger, and abundant heat exchange.The heat conductivility and the mobile performance that solve existing phase change thermal storage solar water heater phase-change material are all very poor, and the heat energy that can not well solar energy be changed is passed to the problem of phase-change material.
Its course of work: the heat storage medium in the heat storage tank is that phase-change material is at normal temperatures for solid-state, when fine day, solar thermal collector absorbs solar energy and solar energy is converted to heat energy, and passes to the working medium that fills in the heat pipe evaporation ends of heat collector, makes working medium vaporize.After the vaporization of the working medium of evaporation ends, enter condenser pipe in the heat storage tank by steam pipe, condensed liquid refrigerant flows back to evaporation ends by the liquid pipe.Working medium is emitted a large amount of heats in the condensation in-tube condensation, pass to phase-change material between fin by finned tube exchanger, makes the temperature of phase-change material raise gradually.When phase-change material temperature rose to phase transition temperature, beginning was by solid-state phase transition process to liquid state.During the beginning phase transformation, the partial phase change material becomes liquid state, and along with the conversion of solar energy, the heat that phase-change material absorbs increases gradually, is got more and more by the solid-state phase-change material that becomes liquid state, until all becoming liquid state.After this, Ye Tai phase-change material can continue accumulation of heat in the mode that temperature raises.When water, cold water flows into the heat exchanging water pipe from water inlet, absorbs the heat of phase change material stores in the heat exchanging water pipe gradually, and the temperature rising becomes hot water and flows out from delivery port.Liquid phase-change material is with the water in the heat transferred heat exchanger tube, and temperature can descend gradually.When its temperature was reduced to by liquid state to solid-state phase transition temperature, a spot of phase-change material can be become solid-state by liquid state.Along with the continuous increase of water consumption, the solid-state part in the phase-change material increases gradually, and is solid-state until all becoming.After this, solid-state phase-change material still can continue to emit heat in the mode that temperature descends, the cold water in the heating heat exchanger tube.
As to improvement of the present utility model, the phase transition temperature of described phase-change material is 45 ℃-85 ℃.
For any phase change thermal storage solar water heater recited above, described solar thermal collector can be flat plate collector or glass vacuum pipe heat collector.
For any phase change thermal storage solar water heater recited above, it also can comprise the electric heater that is arranged in the heat storage tank, and electric heater inserts in the finned tube exchanger, heats so that can enable electric heater when overcast and rainy.
The beneficial effects of the utility model: 1, because to adopt phase-change material be heat storage medium, its heat storage capacity is times or higher of regular solar water heater of same volume size (it is identical to refer to the heat storage tank volume).When fine day, can store more heat in order to overcast and rainy use.2, can dwindle the volume of heat storage tank greatly.3, adopt the branch body structure, can ideally combine with building.4, heat storage tank pressure-bearing not is convenient to make, and cost is low.5, hot water is still with the water outlet of pressure-bearing mode, bath comfort.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2.
The specific embodiment
The utility model is described in further detail below in conjunction with embodiment.
Embodiment 1: the phase-transition heat-storage flat plate solar water heater.
Phase-transition heat-storage flat plate solar water heater shown in Fig. 1 comprises heat storage tank 1 and solar thermal collector 16; Between the inner bag 4 of heat storage tank 1 and the shell 6 heat-insulation layer 5 is arranged, also be provided with water inlet 10 and delivery port 7 on the heat storage tank.Phase-change material 3 is housed in heat storage tank; Finned tube exchanger 12 is arranged in the heat storage tank 1, is provided with condenser pipe 11 and heat exchanging water pipe 8 in the finned tube exchanger 12, and condenser pipe 11 and heat exchanging water pipe 8 are spaced in finned tube exchanger 12; The interface that links to each other with condenser pipe also is set on the heat storage tank 1---steam pipe interface and liquid interface tube 9, heat exchanging water pipe 8 two ends link to each other with delivery port 7 with water inlet 10 respectively, are provided with a phase-change material in addition and fill mouth 2.Described finned tube exchanger 12 almost is full of whole heat storage tank 1, and phase-change material 3 is full of between the fin of whole finned tube exchanger 12 except that a little expansion space is left at the heat storage tank top.Link by a steam pipe 16 and a liquid pipe 15 between the evaporation ends 17 in the flat plate collector 20 and the condenser pipe 11 of heat storage tank, steam pipe 16 and liquid pipe 15 are outside equipped with muff; Flat plate collector 20 lower ends link by an angle valve 19 and liquid pipe, and angle valve 19 is used to vacuumize and filled working medium.When fine day, thermal-arrest fin 18 in the solar thermal collector 20 absorbs solar energy and solar energy is converted to heat energy, pass to the working medium that fills in the heat collector evaporation ends 17, make working medium vaporize, enter condenser pipe 11 in the heat storage tank by steam pipe 16, condensed liquid refrigerant flows back to evaporation ends 17 by liquid pipe 15.Working medium is emitted a large amount of heats in the condensation in condenser pipe 11, pass to phase-change material 3 between fin by finned tube exchanger 12, makes the temperature of phase-change material 3 raise gradually, beginning by solid-state to liquid state, until all becoming liquid state.After this, Ye Tai phase-change material can continue accumulation of heat in the mode that temperature raises.When water, cold water flows into the heat exchanging water pipe from water inlet, absorbs the heat of phase change material stores in the heat exchanging water pipe gradually, and the temperature rising becomes hot water and flows out from delivery port.Liquid phase-change material is with the water in the heat transferred heat exchanger tube, and temperature can descend gradually, and is solid-state until all becoming.Also be provided with electric heater 13 in heat storage tank 1, electric heater 13 inserts in the finned tube exchanger 12, heats so that can enable electric heater when overcast and rainy.
Embodiment 2: the phase-transition heat-storage solar vacuum-tube water heater.
Its course of work is with embodiment 1, difference is that vacuum tube solar heating element 22 is made of all-glass vacuum thermal-collecting tube 21 and header 23, finned metal tube (evaporation ends 17 of heat pipe) is arranged in the header 23 of vacuum tube collector 22, the two ends of evaporation ends 17 link with steam pipe 16 and liquid pipe 15 respectively, and steam pipe 16 and liquid pipe 15 are outside equipped with muff; An interface of heat collector 22 links by an angle valve 19 and liquid pipe.When fine day, vacuum heat collection pipe 21 in the vacuum tube collector 22 absorbs solar energy and solar energy is converted to heat energy, water in the heating, vacuum thermal-collecting tube 21, and with the working medium that fills in the evaporation ends in the heat transferred header 23 17, make working medium vaporize, enter condenser pipe 11 in the heat storage tank by steam pipe 16, condensed liquid refrigerant flows back to evaporation ends 17 by liquid pipe 15.
Claims (7)
1. phase change thermal storage solar water heater comprises heat storage tank and solar thermal collector; Between the inner bag of heat storage tank and the shell heat-insulation layer is arranged, also be provided with water inlet and delivery port on the heat storage tank; It is characterized in that: phase-change material is housed in heat storage tank; Finned tube exchanger is arranged in the heat storage tank, is provided with condenser pipe and heat exchanging water pipe in the finned tube exchanger, and condenser pipe and heat exchanging water pipe are spaced in finned tube exchanger; Also being provided with the interface that links to each other with condenser pipe on the heat storage tank---steam pipe interface and liquid interface tube, heat exchanging water pipe's two ends link to each other with delivery port with water inlet respectively, are provided with a phase-change material in addition and fill mouth.
2. phase change thermal storage solar water heater according to claim 1 is characterized in that: described finned tube exchanger is full of whole heat storage tank, and phase-change material leaves the expansion space at the heat storage tank top, and is full of between the fin of whole finned tube exchanger.
3. phase change thermal storage solar water heater according to claim 1 and 2, it is characterized in that: described solar thermal collector is a flat plate collector, link by a steam pipe and a liquid pipe between the heat pipe evaporation ends of flat plate collector and the condenser pipe of heat storage tank, steam pipe and liquid pipe are outside equipped with muff; End interface links by an angle valve and liquid pipe under the flat plate collector.
4. phase change thermal storage solar water heater according to claim 1 and 2 is characterized in that: described solar thermal collector is a vacuum tube collector; Be provided with finned heat pipe evaporation ends in the header of vacuum tube collector; Link by a steam pipe and a liquid pipe between the heat pipe evaporation ends of heat collector and the condenser pipe of heat storage tank, steam pipe and liquid pipe are outside equipped with muff; An interface of heat collector links by an angle valve and liquid pipe.
5. phase change thermal storage solar water heater according to claim 1 and 2 is characterized in that: the phase transition temperature of described phase-change material is 45 ℃-85 ℃.
6. phase change thermal storage solar water heater according to claim 1 and 2 is characterized in that: it also comprises the electric heater that is arranged in the heat storage tank, and electric heater inserts in the finned tube exchanger.
7. phase change thermal storage solar water heater according to claim 1 and 2 is characterized in that: the working medium that fills in the heat collector can be water, alcohol, acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205095202U CN201875960U (en) | 2010-08-30 | 2010-08-30 | Phase change heat accumulating solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205095202U CN201875960U (en) | 2010-08-30 | 2010-08-30 | Phase change heat accumulating solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201875960U true CN201875960U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205095202U Expired - Fee Related CN201875960U (en) | 2010-08-30 | 2010-08-30 | Phase change heat accumulating solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201875960U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914196A (en) * | 2012-11-14 | 2013-02-06 | 海尔集团公司 | Energy storing box and solar water heater |
| CN106016786A (en) * | 2016-07-29 | 2016-10-12 | 贺迈新能源科技（上海）有限公司 | Water tank-free type solar phase change heat storage water heater |
| CN108120031A (en) * | 2018-02-06 | 2018-06-05 | 江苏贝德莱特太阳能科技有限公司 | A kind of secondary heat exchange formula solar water appliance |
-
2010
- 2010-08-30 CN CN2010205095202U patent/CN201875960U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914196A (en) * | 2012-11-14 | 2013-02-06 | 海尔集团公司 | Energy storing box and solar water heater |
| CN106016786A (en) * | 2016-07-29 | 2016-10-12 | 贺迈新能源科技（上海）有限公司 | Water tank-free type solar phase change heat storage water heater |
| CN108120031A (en) * | 2018-02-06 | 2018-06-05 | 江苏贝德莱特太阳能科技有限公司 | A kind of secondary heat exchange formula solar water appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20140830 |
|
| EXPY | Termination of patent right or utility model |