CN203719155U - Phase-change energy-saving solar vacuum heat collection tube - Google Patents
Phase-change energy-saving solar vacuum heat collection tube Download PDFInfo
- Publication number
- CN203719155U CN203719155U CN201420032272.5U CN201420032272U CN203719155U CN 203719155 U CN203719155 U CN 203719155U CN 201420032272 U CN201420032272 U CN 201420032272U CN 203719155 U CN203719155 U CN 203719155U
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- China
- Prior art keywords
- phase
- water
- wall
- heat
- tube
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- Expired - Fee Related
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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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Abstract
The utility model discloses a phase-change energy-saving solar vacuum heat collection tube. The solar vacuum heat collection tube comprises an all-glass vacuum tube, metal fins, phase-change materials, a U-shaped water tube, a selective absorption coating and a thermal-insulation plug. The all-glass vacuum tube comprises an inner wall and an outer wall, the upper end of the inner wall is open, the selective absorption coating is coated on the inner surface of the inner wall, the thermal-insulation plug is arranged at the opening, the bottom of the U-shaped water tube is arranged in the opening of the inner wall, and a water inlet and a water outlet of the U-shaped water tube are disposed on the outside of the thermal-insulation plug. The metal fins are arranged in the inner wall in a layer shape and divides the inner wall into a plurality of heat exchange spaces in the length direction of the inner wall, and phase-change materials are filled in the heat exchange spaces. The absorbed solar energy is used for heating the phase-change materials indirectly instead of heating hot water directly, the phase-change materials are used for storing energy and heat, heat is released when hot water is needed, the effect that water is hot the instant a water heater is opened is achieved. The water heater is small in size and free of a heat storage water tank, repeated water heating is not needed, and unhealthy water is prevented.
Description
Technical field
The utility model relates generally to phase-changing energy-storing type solar thermal collector, significant to alleviating China domestic hot-water energy consumption.
Background technology
In the face of the dual-pressure of energy crisis and environmental protection, we need to develop and utilize safe and reliable clean energy resource.Solar energy heat utilization technology has wide market, but solar water heater also exists some problems at present, requires further improvement.Flat-plate solar heat collector easily and Integration of building, can bearing operation, but the heat loss of heat collector is larger, and Winter heat supply ability is poor, has the phenomenon of bursting by freezing expand tube.Vacuum tube good heat insulating, but load performance is poor, and efficiency also has much room for improvement.Heat collector in the market need configure heat storage water tank mostly, takies construction area, and be difficult to building form integrated, therefore, this utility model has good application prospect.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of solar vacuum heat-collecting pipe with accumulation of energy function is provided.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of phase change energy-storage type solar vacuum heat-collecting pipe, it is characterized in that: comprise all-glass vacuum tube, metal fin, phase-change material, U-shaped water pipe, coating for selective absorption and insulation are stopped up, described all-glass vacuum tube comprises inner and outer wall, described inwall upper end open, described coating for selective absorption is coated in the inner surface of described inwall, described insulation is stopped up and is arranged on opening part, the bottom of described U-shaped water pipe is positioned at the opening of described inwall, and the water inlet of U-shaped water pipe and delivery port are positioned at outside described insulation obstruction, described metal fin becomes stratiform be arranged in described inwall and on inwall length direction, described inwall be divided into multiple heat transfer spaces, in described each heat transfer space, fill described phase-change material.
Also be provided with a spring support in described all-glass vacuum tube inside, this spring support is between inwall bottom and outer wall.
Also be provided with getter in described all-glass vacuum tube inside.
Also be provided with a protective cap in described outer wall bottom.
The utility model phase change energy-storage type solar vacuum heat-collecting pipe, thermal-collecting tube inside does not directly contact with water, embeds U-shaped water pipe (adjacent U-shaped water pipe connects).Be installed with metal fin outward at U-shaped pipe, between metal fin, fill the phase-change material accumulation of heats such as paraffin.Vacuum tube inwall scribbles coating for selective absorption, and in the time accepting solar radiation, phase-change material absorbs heat and melts accumulation of heat.In the time that user's side needs heating water, phase-change material solidifies heat release, and strengthens heat transfer effect by fin, shortens the heat time.This utility model has certain pressure-bearing property, and overcast and rainy continuously at weather, can utilize low peak valley electric energy heating phase change material when solar energy is faint, and storing energy, plays the effect of peak load shifting.
Compared with prior art, the utlity model has following advantage:
The direct heat hot water of solar energy that 1, need not absorb, but heating phase-change material indirectly, by phase-change material energy storage accumulation of heat, heat release in needs hot water, reaches the effect of instant-heating.This water heater volume is little, without heat storage water tank, not heating water repeatedly, avoids water quality unhealthy.
2, do not adopt vacuum tube directly to contact with water, embedded U-shaped pipe is as water body passage.When there being vacuum tube to break when impaired, thermal-collecting tube is anhydrous to be overflowed, and just single tube damages, and remaining part is normally worked, on system operation without impact.Improve the reliability of system.
3, the additional fin of U-shaped water pipe, the heat exchange of enhancing and phase-change material, has improved heat exchange efficiency, has shortened heat-exchange time, makes vacuum tube have certain load performance simultaneously.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1-all-glass vacuum tube; 2-metal fin; 3-phase-change material; 4-U-shaped water pipe; 5-coating for selective absorption; 6-insulation is stopped up; 7-spring support; 8-protective cap; 9-getter.
Detailed description of the invention
Below in conjunction with accompanying drawing; the utility model is elaborated; as shown in Figure 1; the utility model thermal-collecting tube is mainly made up of all-glass vacuum tube 1, metal fin 2, phase-change material 3, U-shaped water pipe 4, coating for selective absorption 5, insulation obstruction 6, spring support 7, protective cap 8 and getter 9, and wherein phase-change material 3 is selected paraffin or similar material.The absorptivity of coating for selective absorption 5 is greater than 95%, all-glass vacuum tube 1 is embedded in U-shaped water pipe 4, U-shaped water pipe 4 two ends are located at outside pipe, connect to form tube bank with adjacent vacuum tube, (concrete pipe number can be determined with the Demand-side water yield), U-shaped water pipe 4 is installed with metal fin 2 and strengthens heat exchange in all-glass vacuum tube 1, phase-change material 3(paraffin) be filled in 2 of metal fins.All-glass vacuum tube 1 pipe end has insulation to stop up 6, reduces heat transfer loss.Because vacuum tube is not vacuum absolutely, for preventing that vaporization affects heat transfer effect to residual gas as water vapour, arranges getter 9.This phase change energy-storage type solar vacuum heat-collecting pipe can use according to heat exchange amount serial or parallel connection.
Claims (4)
1. a phase change energy-storage type solar vacuum heat-collecting pipe, it is characterized in that: comprise all-glass vacuum tube (1), metal fin (2), phase-change material (3), U-shaped water pipe (4), (6) are stopped up in coating for selective absorption (5) and insulation, described all-glass vacuum tube (1) comprises inner and outer wall, described inwall upper end open, described coating for selective absorption (5) is coated in the inner surface of described inwall, described insulation is stopped up (6) and is arranged on opening part, the bottom of described U-shaped water pipe (4) is positioned at the opening of described inwall, and the water inlet of U-shaped water pipe (4) and delivery port are positioned at described insulation and stop up outside (6), described metal fin becomes stratiform be arranged in described inwall and on inwall length direction, described inwall be divided into multiple heat transfer spaces, in described each heat transfer space, fill described phase-change material (3).
2. phase change energy-storage type solar vacuum heat-collecting pipe according to claim 1, is characterized in that: be also provided with a spring support (7) in described all-glass vacuum tube (1) inside, this spring support (7) is between inwall bottom and outer wall.
3. phase change energy-storage type solar vacuum heat-collecting pipe according to claim 1, is characterized in that: be also provided with getter (9) in described all-glass vacuum tube (1) inside.
4. phase change energy-storage type solar vacuum heat-collecting pipe according to claim 1, is characterized in that: be also provided with a protective cap (8) in described outer wall bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032272.5U CN203719155U (en) | 2014-01-20 | 2014-01-20 | Phase-change energy-saving solar vacuum heat collection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032272.5U CN203719155U (en) | 2014-01-20 | 2014-01-20 | Phase-change energy-saving solar vacuum heat collection tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719155U true CN203719155U (en) | 2014-07-16 |
Family
ID=51158302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420032272.5U Expired - Fee Related CN203719155U (en) | 2014-01-20 | 2014-01-20 | Phase-change energy-saving solar vacuum heat collection tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203719155U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-01-20 CN CN201420032272.5U patent/CN203719155U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20180120 |