CN102914056A - Solar water heater - Google Patents
Solar water heater Download PDFInfo
- Publication number
- CN102914056A CN102914056A CN2012104542240A CN201210454224A CN102914056A CN 102914056 A CN102914056 A CN 102914056A CN 2012104542240 A CN2012104542240 A CN 2012104542240A CN 201210454224 A CN201210454224 A CN 201210454224A CN 102914056 A CN102914056 A CN 102914056A
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- CN
- China
- Prior art keywords
- heat
- water heater
- medium
- return duct
- absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The invention discloses a solar water heater. The water heater is characterized in that a heat absorber is manufactured by a thin-walled cuboid metal box of which the interior is divided into an S-shaped channel, the two ends of the S-shaped channel are respectively connected with an ascending pipe and a return pipe, the return pipe is positioned below, and the ascending pipe is positioned above. A heat-conducting medium in the thin-wall metal box can be in full contact with the wall of a water tank, so that the heat conducting area is enlarged, the heat loss of a heat collector part of the solar water heater is reduced and both the thermal response speed and the freezing resistance of the whole system are improved.
Description
Technical field
The present invention relates to solar energy heat utilization field, refer in particular to and a kind ofly be separated into the thin-walled cuboid metal box of serpentine flow path as the flat plate solar water heater of absorber with inside by bonding jumper.
Background technology
Solar water heater is that a kind of solar energy that utilizes is as the helioplant of energy sources for heating water or heat transfer medium.The most representative with vacuum tube type solar energy water heater and plate solar water heater in the existing solar water heater product.The vacuum tube collector heat sink is vacuum tube, and heat loss is little.Compare the advantage such as that the plate type solar water heater has is simple in structure, the sunlight footprint is large, seal request is low, it is antifreeze not need, working medium is cheap, response is fast with the vacuum tube type solar energy water heater.But also there are the shortcomings such as heat loss is large, collecting efficiency is low.How further to improve the collecting efficiency of solar water heater, be the target that the scientific research personnel pursues always.
The plate type solar water heater mainly is comprised of transparent cover plate, absorber plate, copper pipe, insulation shell four parts.During work, the absorber plate that scribbles coating for selective absorption is converted into heat energy with solar radiation, and heat is passed to the medium that flows in the copper pipe by heat conduction.Existing flat-plate solar collector uses the acetone that is mixed with part water or ethylene glycol as heat-conducting medium, because dielectric viscosity is higher, causes flowing not smooth, and heat exchange efficiency is lower.
For addressing this problem, can adopt the lower heat-conducting medium of boiling point, make medium in the inner heat absorption vaporization of copper pipe, become and hold runny air-flow, bring heat into water tank.Simultaneously since the latent heat of vaporization of medium much larger than sensible heat, the ability of transfer of heat is higher.
But when adopting the lower heat-conducting medium of boiling point, because the tube pitch of traditional flat water heater copper pipe is larger, so that the heat of some area can't be pulled away on the absorber plate.This problem can solve by the heat absorbing part of optimal design water heater heat collector.
Summary of the invention
The purpose that the present invention proposes is further to improve the thermal efficiency of solar water heater, reduces the heat loss of water heater, and for reaching this purpose, boiling point is equipped with at 30 to 70 ℃ heat-conducting medium in the cuboid metal box inside that consists of absorber.
For achieving the above object, the technical solution used in the present invention is: solar water heater is comprised of insulation shell, absorber, transparent cover plate, ascending tube, return duct, heat storage water tank, it is characterized in that: if absorber is made by the thin-walled cuboid metal box that an inside is separated into serpentine flow path, the two ends of serpentine flow path are connected to respectively ascending tube and return duct, return duct is positioned at the below, and ascending tube is positioned at the top.Heating inner container is equipped with in heat storage water tank inside, and heating inner container is connected with ascending tube and return duct.The medium spout of heating inner container inside is higher than the medium back flow mouth.Absorber simultaneously is coated with selective absorption on the sunny side and is coated with, and is wrapped in the shell of insulation shell and transparent cover plate formation.
The present invention has compared three advantages with traditional flat-plate solar collector: the one, use low-boiling heat-conducting medium, and make heat-conducting mode become the latent heat circulating heat conduction by the sensible heat circulating heat conduction, the phase transition process of medium makes circulation rapider, and the heat transfer rate is faster; The 2nd, the boiling point of medium is lower, makes heat collector have cold-starting and freezing tolerance, and makes heat collector when operation temperature lower, has reduced heat leakage; The 3rd, the heat collection body that adopts thin-walled cuboid metal box to consist of has saved traditional welding process of passing through with flat board, has reduced thermal resistance, has increased heat-conducting area.
Description of drawings
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is the schematic appearance of this water heater.
Fig. 2 is the A-A profile of this water heater.
The position of marking is respectively among the figure: 1, insulation shell; 2, absorber; 3, transparent cover plate; 4, ascending tube; 5, return duct; 6, serpentine flow path; 7, heating inner container; 8, heat storage water tank; 9, medium spout; 10, medium back flow mouth.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are explained.
Absorber 2 on the sunny side one side is coated with coating for selective absorption, absorbs sunlight and is converted into heat energy, and the medium of heating cuboid thin-walled water tank inside enters heating inner container 7 through ascending tube 4 by medium spout 9 after the medium heat absorption vaporization, and heat release liquefaction.Medium after the liquefaction is got back to absorber 2 through medium back flow mouth 10 by return duct 5.The water heat absorption of heat storage water tank 8 inside heats up.
Claims (3)
1. solar water heater, this heat collector is comprised of insulation shell (1), absorber (2), transparent cover plate (3), ascending tube (4), return duct (5), heat storage water tank (8), it is characterized in that: absorber (2) is made by the thin-walled cuboid metal box that an inside is separated into serpentine flow path, the two ends of serpentine flow path are connected to respectively ascending tube (4) and return duct (5), return duct (5) is positioned at the below, and ascending tube (4) is positioned at the top.
2. solar thermal collector according to claim 1, it is characterized in that: cuboid metal box inside is filled with the heat-conducting medium of boiling point between 30 to 70 degrees centigrade.
3. solar thermal collector according to claim 1, it is characterized in that: heating inner container (7) is equipped with in heat storage water tank (8) inside, heating inner container (7) is connected with ascending tube (4) and return duct (5), and the inner medium spout (9) of heating inner container (7) is higher than medium back flow mouth (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104542240A CN102914056A (en) | 2012-11-14 | 2012-11-14 | Solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104542240A CN102914056A (en) | 2012-11-14 | 2012-11-14 | Solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102914056A true CN102914056A (en) | 2013-02-06 |
Family
ID=47612539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104542240A Pending CN102914056A (en) | 2012-11-14 | 2012-11-14 | Solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102914056A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162437A (en) * | 2013-04-11 | 2013-06-19 | 南京信息工程大学 | Solar thermal collector |
| CN107289643A (en) * | 2017-06-28 | 2017-10-24 | 云南靖创液态金属热控技术研发有限公司 | A kind of solar water heater |
| CN108954846A (en) * | 2018-07-26 | 2018-12-07 | 武汉科技大学 | A kind of solar water heater intelligence water storage circulatory system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861889Y (en) * | 2005-10-24 | 2007-01-24 | 喜春野 | Split assembled external-recycling super-heat pipe anti-refrigeration planet solar water heater |
| CN102601265A (en) * | 2012-03-31 | 2012-07-25 | 徐征远 | Method for machining sunlight tile liner |
-
2012
- 2012-11-14 CN CN2012104542240A patent/CN102914056A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861889Y (en) * | 2005-10-24 | 2007-01-24 | 喜春野 | Split assembled external-recycling super-heat pipe anti-refrigeration planet solar water heater |
| CN102601265A (en) * | 2012-03-31 | 2012-07-25 | 徐征远 | Method for machining sunlight tile liner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162437A (en) * | 2013-04-11 | 2013-06-19 | 南京信息工程大学 | Solar thermal collector |
| CN107289643A (en) * | 2017-06-28 | 2017-10-24 | 云南靖创液态金属热控技术研发有限公司 | A kind of solar water heater |
| CN108954846A (en) * | 2018-07-26 | 2018-12-07 | 武汉科技大学 | A kind of solar water heater intelligence water storage circulatory system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |