CN103363696A - Frost heaving protecting structure for heat exchange tube of phase-change heat-storage solar water heater - Google Patents
Frost heaving protecting structure for heat exchange tube of phase-change heat-storage solar water heater Download PDFInfo
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- CN103363696A CN103363696A CN2013102572960A CN201310257296A CN103363696A CN 103363696 A CN103363696 A CN 103363696A CN 2013102572960 A CN2013102572960 A CN 2013102572960A CN 201310257296 A CN201310257296 A CN 201310257296A CN 103363696 A CN103363696 A CN 103363696A
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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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- Heat-Pump Type And Storage Water Heaters (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a frost heaving protecting structure for a heat exchange tube of a phase-change heat-storage solar water heater. The heat exchange tube adopts a multi-layer structure mainly comprising an outer tube, an inner tube and other parts, and an avoiding structure is arranged on at least one layer, or the specially-shaped heat exchange tube is designed. Due to the adoption of the multi-layer heat exchange tube or the specially-shaped heat exchange tube, a frost heaving space of the heat exchange tube is reserved, so that even if the heat exchange tube burst because of icing, a phase-change heat-storage material does not contact water directly, and after restoration of water use, the reserved space is taken as a water draining passage to achieve a cautioning effect, thus completely avoiding leakage of the phase-change material.
Description
Technical field
The present invention relates to a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, belong to the solar energy techniques field.
Background technology
Fast-developing along with China's economic, living standards of the people improve constantly, and the demand of the energy is also increased progressively thereupon.At present energy resource consumption is mainly the fossil fuels such as coal, oil and natural gas.Because the China's oil reserves are limited, nearly 50% crude oil relies on import at present, and coal still is the main fuels and energy source of China, and the environmental problem that fire coal causes has become the problem that must take seriously in China's strategy of sustainable development.Solar energy is a kind of energy of huge environmentally safe, the solar energy that earth per second the obtains 5,000,000 tons of energy that fat coal sends that are equivalent to burn.
China is one of the abundantest country of solar energy in the world, China's solar energy irradiation total amount is greater than 5,020,000 kilojoules square metre, 2200 hours area of year sunshine time accounts for China's area more than 2/3, west area particularly, and a year sunshine-duration reached more than 3000 hours.China utilizes solar energy to obtain achievement highly visible, and wherein the solar water heater industry development is particularly rapid, is just becoming a new industry.
In recent years, solar water heater was with the speed increment of average annual growth 20% to 30%.China's solar energy industry is started late, still be at an early stage of development, larger with the gap of abroad going together, the at present application of solar energy mainly concentrates on low-quality solar energy and utilizes the aspect, and the solar water heater of domestic use mainly contains: stagnation type solar water heater, plate solar heat hydrophone, vacuum tubular glass solar collector and heat pipe vacuum tubular glass solar collector etc.The low side solar thermal collector of employing plastics-water pipe is also arranged in recent years.These low sides, with the solar water heater that hollow plate glass/pipe is directly leaked water, its shortcoming is that heat-insulating property is poor, how interface easily leaks, opposing low temperature ability, frangible easy explosion, volume is large, Heavy Weight, the thermal efficiency is lower.
Phase-change accumulation energy and technology can be stored in the form of energy with latent heat of phase change in the phase-change material (Phase Change Materials, PCMs), realize the conversion of energy between different space-times.Utilizing the latent heat of phase change of phase-change material to realize storage and the utilization of energy, help to improve efficiency of energy utilization and exploitation regenerative resource, is very active forward position research direction in energy science and the material science in recent years.Compare with the sensible heat energy storage technology, phase change energy storage technology has that energy storage density is high, volume is small and exquisite, temperature control is constant, energy-saving effect significantly, the phase transition temperature range of choice is wide, be easy to the advantage such as control, have broad prospects in various fields such as Aero-Space, solar energy utilization, heating and air-conditioning, electric power system optimization, engineering in medicine, military engineering, accumulation of heat building and extreme environment clothes.
Existing phase-change thermal storage type solar water heater heat exchange pipe external surface directly contacts with phase-change heat-storage material, there is the possibility of freezing in water during the continuous cloudy day in winter in the heat exchanger tube, in case the heat exchanger tube frost heave is broken, phase-change material can contact by water direct and in the heat exchanger tube when recovering water, reveal by water system, cause environmental pollution.
Summary of the invention
The object of the invention provides a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure.
For achieving the above object; the first technical scheme that the present invention adopts is: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure; described heat exchanger tube comprises outer tube and inner tube; described outer tube sleeve is established on inner pipe; and have cavity between outer tube and the inner tube, be inserted with the section of jurisdiction that at least one cross section is arc in the described cavity.
Preferred technical scheme is: described section of jurisdiction is one, and the arc of described section of jurisdiction is major arc.
For achieving the above object, the second technical scheme that the present invention adopts is: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, described heat exchanger tube is comprised of inner and outer tubes, and described outer tube sleeve is established on inner pipe, and described outer tube and inner tube heat transfer contact; The inner surface of described outer tube is provided with at least one groove.
Preferred technical scheme is: described groove is along the radially setting of described outer tube.
For achieving the above object, the third technical scheme that the present invention adopts is: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, described heat exchanger tube is comprised of inner and outer tubes, and described outer tube sleeve is established on inner pipe, and described outer tube and inner tube heat transfer contact; The outer surface of described inner tube is provided with at least one groove.
Preferred technical scheme is: described groove is along the radially setting of described inner tube.
For achieving the above object, the 4th kind of technical scheme that the present invention adopts is: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, the tube wall of described heat exchanger tube radially is provided with at least one hole.
Preferred technical scheme is: described hole be shaped as circle, ellipse, rectangle, triangle or trapezoidal.
Related content in the technique scheme is explained as follows:
The present invention adopts Multi-layer exchanging heat pipe or special-shaped heat exchange tubes, reserves the space of heat exchanger tube frost heave, even heat exchanger tube is because of the spalling of freezing, phase-change heat-storage material can directly not contact with water, when recovering water, headspace gushes as the passage of water and plays warning function, has avoided the leakage of phase-change material fully.
Description of drawings
Accompanying drawing 1 is embodiment of the present invention one schematic diagram;
Accompanying drawing 2 is embodiment of the present invention two schematic diagrames;
Accompanying drawing 3 is embodiment of the present invention three schematic diagrames;
Accompanying drawing 4 is embodiment of the present invention four schematic diagrames;
In the above accompanying drawing, 1, hot pond body; 2 phase-change heat-storage materials; 3, outer tube, 4, section of jurisdiction; 5, inner tube; 6, heat exchanger tube.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
Notice, the appended graphic structure that illustrates of this specification, ratio, size etc., equal contents in order to cooperate specification to disclose only, understand and reading for person skilled in the art scholar, be not to limit the enforceable qualifications of the present invention, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the purpose that can reach, all should still drop on disclosed technology contents and get in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the present invention.
Embodiment one: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure
Existing phase-change thermal storage solar water heater is generally the cistern free structure, therefore phase-change heat-storage material 2 directly is placed in the phase-change thermal storage solar water heater, its concrete structure is: comprise several heat absorption heat storage units in the phase-change thermal storage solar water heater, the structure of this heat absorption heat storage units is the outside all-glass vacuum thermal-collecting tube that is, thermal-collecting tube inside is provided with a stainless hot pond cylindrical shell 1, be marked with phase-change heat-storage material 2 in this hot pond cylindrical shell 1, be embedded with heat exchanger tube in the phase-change heat-storage material 2.When the user uses, open the phase-change thermal storage solar water heater, water flows through to take away the heat energy that phase-change heat-storage material 2 absorbs is transformed by solar radiant energy from heat exchanger tube.When winter, the water that is present in the heat exchanger tube can be because of the bad heat exchanger tube that expands that freezes.The heat exchanger tube of existing phase-change thermal storage solar water heater generally adopts the U-shaped heat exchanger tube.Therefore phase-change thermal storage solar water heater heat exchanger tube need to have frost heave protection structure.
Shown in accompanying drawing 1; a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, described heat exchanger tube comprises outer tube 3 and inner tube 5, described outer tube 3 is set on the inner tube 5; and has cavity between outer tube 3 and the inner tube 5, the section of jurisdiction 4 that to be inserted with a cross section in the described cavity be arc.And the arc of this section of jurisdiction is major arc.The purpose of major arc is the heat exchange efficiency that increases between outer tube 3 and the inner tube 5.Even inner tube 5 is swollen bad, because the buffering of outer tube 3 being arranged, can not cause phase-change heat-storage material 2 to enter the result of heat exchanger tube yet.And because section of jurisdiction 4 is major arc, owing to there being breach, so that inner tube 5 has the expansion space, therefore because of inner tube 5 the bad result of account can not occur.During a plurality of section of jurisdiction 4, complicated a little except installing, other result is identical.
Embodiment two: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure
Shown in accompanying drawing 2, a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, described heat exchanger tube is comprised of inner tube 5 and outer tube 3, and described outer tube 3 is set on the inner tube 5, and described outer tube 3 and inner tube 5 heat transfer contact; The inner surface of described outer tube 3 is provided with a groove.This groove is the space of allowing that inner tube 5 expands.Described groove is preferably along the radially setting of described outer tube 3, and runs through the length direction of whole outer tube 3.
Embodiment three: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure
Shown in accompanying drawing 3, a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, described heat exchanger tube is comprised of inner tube 5 and outer tube 3, and described outer tube 3 is set on the inner tube 5, and described outer tube 3 and inner tube 5 heat transfer contact; The outer surface of described inner tube 5 is provided with a groove.This groove is the space of allowing that inner tube 5 expands.Described groove is preferably along the radially setting of described outer tube 3, and runs through the length direction of whole outer tube 3.
Embodiment four: a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure
Shown in accompanying drawing 4, a kind of phase-change thermal storage solar water heater heat exchanger tube frost heave protection structure, the tube wall of described heat exchanger tube 6 radially is provided with at least one hole.This hole is the space of allowing that inner tube 5 expands.The good radially setting along described tube wall of described Kongzui, and run through the length direction of whole tube wall.The shape in described hole can be chosen as circle, ellipse, rectangle, triangle or trapezoidal.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. a phase-change thermal storage solar water heater heat exchanger tube frost heave is protected structure; it is characterized in that: described heat exchanger tube comprises outer tube and inner tube; described outer tube sleeve is established on inner pipe, and has cavity between outer tube and the inner tube, is inserted with the section of jurisdiction that at least one cross section is arc in the described cavity.
2. phase-change thermal storage solar water heater heat exchanger tube frost heave according to claim 1 is protected structure, and it is characterized in that: described section of jurisdiction is one, and the arc of described section of jurisdiction is major arc.
3. a phase-change thermal storage solar water heater heat exchanger tube frost heave is protected structure, and it is characterized in that: described heat exchanger tube is comprised of inner and outer tubes, and described outer tube sleeve is established on inner pipe, and described outer tube and inner tube heat transfer contact; The inner surface of described outer tube is provided with at least one groove.
4. phase-change thermal storage solar water heater heat exchanger tube frost heave according to claim 3 is protected structure, and it is characterized in that: described groove is along the radially setting of described outer tube.
5. a phase-change thermal storage solar water heater heat exchanger tube frost heave is protected structure, and it is characterized in that: described heat exchanger tube is comprised of inner and outer tubes, and described outer tube sleeve is established on inner pipe, and described outer tube and inner tube heat transfer contact; The outer surface of described inner tube is provided with at least one groove.
6. phase-change thermal storage solar water heater heat exchanger tube frost heave according to claim 5 is protected structure, and it is characterized in that: described groove is along the radially setting of described inner tube.
7. a phase-change thermal storage solar water heater heat exchanger tube frost heave is protected structure, and it is characterized in that: the tube wall of described heat exchanger tube radially is provided with at least one hole.
8. phase-change thermal storage solar water heater heat exchanger tube frost heave according to claim 7 protection structure is characterized in that: described hole be shaped as circle, ellipse, rectangle, triangle or trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102572960A CN103363696A (en) | 2013-06-25 | 2013-06-25 | Frost heaving protecting structure for heat exchange tube of phase-change heat-storage solar water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102572960A CN103363696A (en) | 2013-06-25 | 2013-06-25 | Frost heaving protecting structure for heat exchange tube of phase-change heat-storage solar water heater |
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| CN103363696A true CN103363696A (en) | 2013-10-23 |
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| CN2013102572960A Pending CN103363696A (en) | 2013-06-25 | 2013-06-25 | Frost heaving protecting structure for heat exchange tube of phase-change heat-storage solar water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021027231A1 (en) * | 2019-08-09 | 2021-02-18 | 芜湖美的厨卫电器制造有限公司 | Housing assembly and phase changing water heater |
| WO2021027239A1 (en) * | 2019-08-09 | 2021-02-18 | 芜湖美的厨卫电器制造有限公司 | Phase-change water heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2478161A1 (en) * | 1980-03-11 | 1981-09-18 | Fabre Jean | Frost-resistant pipe for domestic water feed - contains e.g. tube of compressible sealed cellular material which contracts when ice forms |
| CN201561675U (en) * | 2009-12-08 | 2010-08-25 | 南京尚优科技有限公司 | Anti-frost-heave heat pipe |
| CN201724451U (en) * | 2010-06-29 | 2011-01-26 | 浙江比华丽电子科技有限公司 | Antifreezing water feeding pipe for solar water heater |
| CN202853179U (en) * | 2012-10-26 | 2013-04-03 | 浙江神太太阳能有限公司 | Frost heave preventing heat pipe for solar water heating device |
| CN203413854U (en) * | 2013-06-25 | 2014-01-29 | 江苏启能新能源材料有限公司 | Freeze expansion protection structure of heat exchange tube of phase change heat accumulation solar heater |
-
2013
- 2013-06-25 CN CN2013102572960A patent/CN103363696A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2478161A1 (en) * | 1980-03-11 | 1981-09-18 | Fabre Jean | Frost-resistant pipe for domestic water feed - contains e.g. tube of compressible sealed cellular material which contracts when ice forms |
| CN201561675U (en) * | 2009-12-08 | 2010-08-25 | 南京尚优科技有限公司 | Anti-frost-heave heat pipe |
| CN201724451U (en) * | 2010-06-29 | 2011-01-26 | 浙江比华丽电子科技有限公司 | Antifreezing water feeding pipe for solar water heater |
| CN202853179U (en) * | 2012-10-26 | 2013-04-03 | 浙江神太太阳能有限公司 | Frost heave preventing heat pipe for solar water heating device |
| CN203413854U (en) * | 2013-06-25 | 2014-01-29 | 江苏启能新能源材料有限公司 | Freeze expansion protection structure of heat exchange tube of phase change heat accumulation solar heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021027231A1 (en) * | 2019-08-09 | 2021-02-18 | 芜湖美的厨卫电器制造有限公司 | Housing assembly and phase changing water heater |
| WO2021027239A1 (en) * | 2019-08-09 | 2021-02-18 | 芜湖美的厨卫电器制造有限公司 | Phase-change water heater |
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Application publication date: 20131023 |