CN101907362A - Phase change thermal storage solar water heater without thermal storage tank - Google Patents
Phase change thermal storage solar water heater without thermal storage tank Download PDFInfo
- Publication number
- CN101907362A CN101907362A CN2010102663735A CN201010266373A CN101907362A CN 101907362 A CN101907362 A CN 101907362A CN 2010102663735 A CN2010102663735 A CN 2010102663735A CN 201010266373 A CN201010266373 A CN 201010266373A CN 101907362 A CN101907362 A CN 101907362A
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- Prior art keywords
- thermal storage
- phase change
- vacuum tube
- phase
- water heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to a solar water heater taking a phase change material as a heat storage medium, solving the problem of high cost and low heat conduction efficiency of the existing phase change thermal storage solar water heater. The phase change thermal storage solar water heater comprises a all-glass solar energy vacuum collector tube, a header and a bracket, wherein the header is provided with a water inlet, a water outlet and a phase change material filling port; the phase change materials are filled in the solar energy vacuum collector tube; a finned tube exchanger is arranged in the all-glass solar energy vacuum collector tube and is nearly filled in the whole vacuum tube and is in tight contact with the inner wall of the vacuum tube; and the upper part of the vacuum tube is reserved with a little expansion space for the phase change materials. In the invention, the phase change material is adopted as the heat storage medium, the thermal storage capability is times or more than that of the water, so the heater can store more heat; and because the thermal storage tank is canceled, and the phase change materials are directly filled into the vacuum tube, thus the cost is reduced greatly; the all-glass solar energy vacuum collector tube directly transfers the converted heat energy to the heat storage medium, so the thermal efficiency is high; and the vacuum tube does not bear pressure and the hot water is still output in a pressure bearing mode.
Description
Technical field
The present invention 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.
Utilize the heat storage medium of phase-change material, can improve the heat storage capacity of water heater greatly as solar water heater.Utilize the heat storage medium of phase-change material as solar water heater though some patents have also been considered, they have heat storage tank, and by conducting-heat elements the heat energy that solar energy changes are passed to phase-change material, thereby the cost height, and heat transfer efficiency is low.
Summary of the invention
What the present invention will solve is: existing phase change thermal storage solar water heater cost height, the problem that heat transfer efficiency is low.
Phase change thermal storage solar water heater without thermal storage tank of the present invention comprises full-glass solar energy collecting vacuum tube, header, support, and header is provided with water inlet and delivery port, is provided with phase-change material in addition and fills mouth; Phase-change material is housed in full-glass solar energy collecting vacuum tube; Heat exchange of heat pipe is arranged in the full-glass solar energy collecting vacuum tube, and finned tube exchanger almost is full of whole vacuum tube and closely contacts with the inwall of vacuum tube; Leave the expansion space of a little phase-change material on the top of vacuum tube.Leave hole on the fin of described finned tube exchanger, be convenient to liquid phase-change material and can be full of between the interior fin of whole vacuum tube.
Adopt finned tube exchanger, finned tube exchanger almost is full of whole vacuum tube and closely contacts with the inwall of vacuum tube; Exactly in order to allow phase-change material fully contact with finned tube exchanger, fully heat exchange.The present invention is owing to utilize phase-change material to be heat storage medium, and its heat storage capacity is times or higher of water, can store the characteristics of more heat, cancelled heat storage tank, directly phase-change material is contained in the vacuum tube, thereby reduces cost greatly, and hot water is still with the water outlet of pressure-bearing mode.In addition, full-glass solar energy collecting vacuum tube is directly passed to heat storage medium with the heat energy that transforms, and has saved conducting-heat elements, thereby thermal efficiency height.
Its course of work: the heat storage medium in the vacuum tube is that phase-change material is at normal temperatures for solid-state, when fine day, solar energy heat collection pipe absorbs solar energy and solar energy is converted to heat energy, by passing to phase-change material between fin, make the temperature of phase-change material raise gradually with the finned tube exchanger that the inwall of vacuum tube closely contacts.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 in the finned tube from water inlet, absorbs the heat of phase change material stores in finned tube exchanger 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 finned tube.
As improvement of the present invention, the phase transition temperature of described phase-change material is 45 ℃-85 ℃.
As improvement of the present invention, the external diameter 〉=70mm of described full-glass solar energy collecting vacuum tube.
As improvement of the present invention, described finned tube exchanger is a U type finned tube exchanger.
For phase change thermal storage solar water heater without thermal storage tank recited above, adopt series system between the finned tube exchanger in the described full-glass solar energy collecting vacuum tube, can also adopt series and parallel mode or parallel way.
For any phase change thermal storage solar water heater without thermal storage tank recited above, it also can comprise the electric heater that is arranged in the vacuum tube, and electric heater inserts in the finned tube exchanger, heats so that can enable electric heater when overcast and rainy.
Beneficial effect of the present invention: 1, because the employing phase-change material is a heat storage medium, its heat storage capacity is times or higher of same volume size water.When fine day, can store more heat in order to overcast and rainy use.2, no heat storage tank and conducting-heat elements, thus greatly reduce cost.3, full-glass solar energy collecting vacuum tube is directly passed to heat storage medium, thermal efficiency height with the heat energy that transforms.4, vacuum tube 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;
Fig. 2 is the view that the vacuum tube hush panel looks up from vacuum tube;
Fig. 3 is fin hole figure;
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment: phase change thermal storage solar water heater without thermal storage tank
Finned tube exchanger adopts U type finned tube exchanger in the present embodiment
Phase change thermal storage solar water heater without thermal storage tank shown in Fig. 1 comprises full-glass solar energy collecting vacuum tube 9, header 1, support 10, and header 1 is provided with water inlet 5 and delivery port 6, is provided with phase-change material in addition and fills mouth 3; Phase-change material 7 is housed in full-glass solar energy collecting vacuum tube 9; U type finned tube exchanger 8 is arranged in the full-glass solar energy collecting vacuum tube 9, and U type finned tube exchanger 8 almost is full of whole vacuum tube 9 and closely contacts with the inwall of vacuum tube 9; Leave the expansion space of a little phase-change material on the top of vacuum tube 9.Leave hole 12 (seeing figure three) on the fin of described U type finned tube exchanger 8, be convenient to liquid phase-change material and can be full of between the fin in the whole vacuum tube 1.In header 1, also be provided with heat-insulation layer 2 and vacuum tube hush panel 4, the view that figure two looks up from vacuum tube for vacuum tube hush panel 4,41 is mouth of pipe clip, and 42 is U type pore, and 43 for filling pore.Adopt series system between the U type finned tube exchanger 8 in header 1 in each full-glass solar energy collecting vacuum tube 9.
When fine day, solar energy heat collection pipe absorbs solar energy and solar energy is converted to heat energy, by passing to phase-change material 7 between fin with the U type finned tube exchanger 8 that the inwall of vacuum tube 9 closely contact, make the temperature of phase-change material 7 raise gradually, beginning is by solid-state phase transition process to liquid state.Along with the conversion of solar energy, the heat that phase-change material absorbs increases gradually, until all becoming liquid state.After this, Ye Tai phase-change material 7 can continue accumulation of heat in the mode that temperature raises.When water, cold water flows in the U type pipe 8 from water inlet 5, absorbs the heat of phase-change material 3 storages in U type finned tube exchanger 8 gradually, and temperature raises becomes hot water again from delivery port 6 outflows.Liquid phase-change material 7 with the water in the heat transferred heat exchanger 8 after, temperature can descend gradually.When its temperature was reduced to by liquid state to solid-state phase transition temperature, phase-change material 7 was become solid-state gradually by liquid state, along with the continuous increase of water consumption, solid-state until all becoming.After this, solid-state phase-change material 7 still can continue to emit heat in the mode that temperature descends, the cold water in the heating U type pipe 8.
Claims (9)
1. phase change thermal storage solar water heater without thermal storage tank, comprise full-glass solar energy collecting vacuum tube, header, support, header is provided with water inlet and delivery port, it is characterized in that: phase-change material is housed in full-glass solar energy collecting vacuum tube, finned tube exchanger is arranged in the full-glass solar energy collecting vacuum tube, and finned tube exchanger is full of whole vacuum tube and closely contacts with the inwall of vacuum tube; Leave the expansion space of phase-change material on the top of vacuum tube; On header, also be provided with phase-change material and fill mouth.
2. phase change thermal storage solar water heater without thermal storage tank according to claim 1 is characterized in that: leave hole on the fin of described finned tube exchanger, be convenient to liquid phase-change material and can be full of between the interior fin of whole vacuum tube.
3. phase change thermal storage solar water heater without thermal storage tank according to claim 1 and 2 is characterized in that: the phase transition temperature of described phase-change material is 45 ℃-85 ℃.
4. phase change thermal storage solar water heater without thermal storage tank according to claim 1 and 2 is characterized in that: the external diameter 〉=70mm of described full-glass solar energy collecting vacuum tube.
5. phase change thermal storage solar water heater without thermal storage tank according to claim 1 and 2 is characterized in that: adopt series system between the finned tube exchanger in the described full-glass solar energy collecting vacuum tube.
6. phase change thermal storage solar water heater without thermal storage tank according to claim 1 and 2 is characterized in that: adopt the series and parallel mode between the finned tube exchanger in the described full-glass solar energy collecting vacuum tube.
7. phase change thermal storage solar water heater without thermal storage tank according to claim 1 and 2 is characterized in that: adopt parallel way between the finned tube exchanger in the described full-glass solar energy collecting vacuum tube.
8. phase change thermal storage solar water heater without thermal storage tank according to claim 1 and 2 is characterized in that: it also comprises the electric heater that is arranged in the full-glass solar energy collecting vacuum tube, and electric heater inserts in the finned tube exchanger.
9. phase change thermal storage solar water heater without thermal storage tank according to claim 1 and 2 is characterized in that: described finned tube exchanger is a U type finned tube exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102663735A CN101907362A (en) | 2010-08-30 | 2010-08-30 | Phase change thermal storage solar water heater without thermal storage tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102663735A CN101907362A (en) | 2010-08-30 | 2010-08-30 | Phase change thermal storage solar water heater without thermal storage tank |
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| CN101907362A true CN101907362A (en) | 2010-12-08 |
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| CN2010102663735A Pending CN101907362A (en) | 2010-08-30 | 2010-08-30 | Phase change thermal storage solar water heater without thermal storage tank |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252431A (en) * | 2011-04-25 | 2011-11-23 | 海宁伊满阁太阳能科技有限公司 | Method and product for two-phase flow heat exchange and heat collection in vacuum heat-collecting pipes |
| CN102563918A (en) * | 2012-02-20 | 2012-07-11 | 江苏启能新能源材料有限公司 | Phase-change and heat-storage solar water heater |
| CN103335415A (en) * | 2013-06-26 | 2013-10-02 | 江苏启能新能源材料有限公司 | Phase change heat storage solar water heater with enhanced heat absorption capability |
| CN103727680A (en) * | 2014-01-20 | 2014-04-16 | 东南大学 | Phase-changing energy-storing solar vacuum heat collecting pipe |
| CN104359240A (en) * | 2014-10-24 | 2015-02-18 | 浙江大学 | Phase-change heat storage type solar heat accumulation tube and regulation and control heating method |
| CN104930730A (en) * | 2015-07-13 | 2015-09-23 | 海宁汇豪太阳能科技有限公司 | Phase-change heat storage solar water heater without heat storage box |
| CN104949354A (en) * | 2015-06-12 | 2015-09-30 | 上海海大技术转移有限公司 | Phase change heat storage type solar energy evacuated collector tube and solar water heater comprising phase change heat storage type solar energy evacuated collector tube |
| CN104964465A (en) * | 2015-07-13 | 2015-10-07 | 海宁汇豪太阳能科技有限公司 | Straight-inserting pressure-bearing type solar water heater |
| CN105928227A (en) * | 2016-05-26 | 2016-09-07 | 杨新甫 | Heat-storage-tank-free phase-change heat storage solar water heater |
| CN109682086A (en) * | 2019-02-14 | 2019-04-26 | 安徽腾峰新能源有限公司 | A kind of phase-change material solar water heater |
| CN116335319A (en) * | 2023-05-30 | 2023-06-27 | 中国建筑设计研究院有限公司 | Constant temperature circulating water building curtain wall of adjustable shading degree of passive form |
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| JPS58205049A (en) * | 1982-05-26 | 1983-11-29 | Toshiba Corp | Solar heat collecting tube |
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| CN101629764A (en) * | 2009-08-10 | 2010-01-20 | 蒋立本 | U-shaped tube type heat exchanger |
| CN201772655U (en) * | 2010-08-30 | 2011-03-23 | 江苏省华扬太阳能有限公司 | Phase-change heat accumulating solar water heater without heat accumulating case |
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2010
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS58205049A (en) * | 1982-05-26 | 1983-11-29 | Toshiba Corp | Solar heat collecting tube |
| CN1563848A (en) * | 2004-04-16 | 2005-01-12 | 华南理工大学 | Vacuum tube heat accumulating solar water heater without water tank |
| CN201215399Y (en) * | 2008-05-15 | 2009-04-01 | 黄永定 | U-type tubular solar heat collector |
| CN201297788Y (en) * | 2008-07-11 | 2009-08-26 | 上海锦立新能源科技有限公司 | Solar energy phase change thermal storage collector tube |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252431A (en) * | 2011-04-25 | 2011-11-23 | 海宁伊满阁太阳能科技有限公司 | Method and product for two-phase flow heat exchange and heat collection in vacuum heat-collecting pipes |
| CN102252431B (en) * | 2011-04-25 | 2013-09-18 | 海宁伊满阁太阳能科技有限公司 | Method and product for two-phase flow heat exchange and heat collection in vacuum heat-collecting pipes |
| CN102563918A (en) * | 2012-02-20 | 2012-07-11 | 江苏启能新能源材料有限公司 | Phase-change and heat-storage solar water heater |
| CN103335415B (en) * | 2013-06-26 | 2016-08-31 | 江苏启能新能源材料有限公司 | A kind of phase-change thermal storage solar water heater strengthening heat absorption |
| CN103335415A (en) * | 2013-06-26 | 2013-10-02 | 江苏启能新能源材料有限公司 | Phase change heat storage solar water heater with enhanced heat absorption capability |
| CN103727680A (en) * | 2014-01-20 | 2014-04-16 | 东南大学 | Phase-changing energy-storing solar vacuum heat collecting pipe |
| CN104359240A (en) * | 2014-10-24 | 2015-02-18 | 浙江大学 | Phase-change heat storage type solar heat accumulation tube and regulation and control heating method |
| CN104949354A (en) * | 2015-06-12 | 2015-09-30 | 上海海大技术转移有限公司 | Phase change heat storage type solar energy evacuated collector tube and solar water heater comprising phase change heat storage type solar energy evacuated collector tube |
| CN104949354B (en) * | 2015-06-12 | 2017-03-22 | 上海海大技术转移有限公司 | Phase change heat storage type solar energy evacuated collector tube and solar water heater comprising phase change heat storage type solar energy evacuated collector tube |
| CN104930730A (en) * | 2015-07-13 | 2015-09-23 | 海宁汇豪太阳能科技有限公司 | Phase-change heat storage solar water heater without heat storage box |
| CN104964465A (en) * | 2015-07-13 | 2015-10-07 | 海宁汇豪太阳能科技有限公司 | Straight-inserting pressure-bearing type solar water heater |
| CN105928227A (en) * | 2016-05-26 | 2016-09-07 | 杨新甫 | Heat-storage-tank-free phase-change heat storage solar water heater |
| CN109682086A (en) * | 2019-02-14 | 2019-04-26 | 安徽腾峰新能源有限公司 | A kind of phase-change material solar water heater |
| CN116335319A (en) * | 2023-05-30 | 2023-06-27 | 中国建筑设计研究院有限公司 | Constant temperature circulating water building curtain wall of adjustable shading degree of passive form |
| CN116335319B (en) * | 2023-05-30 | 2023-08-15 | 中国建筑设计研究院有限公司 | Constant temperature circulating water building curtain wall of adjustable shading degree of passive form |
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Application publication date: 20101208 |