CN103216954A - Wrapped solar water heater - Google Patents
Wrapped solar water heater Download PDFInfo
- Publication number
- CN103216954A CN103216954A CN2013101585215A CN201310158521A CN103216954A CN 103216954 A CN103216954 A CN 103216954A CN 2013101585215 A CN2013101585215 A CN 2013101585215A CN 201310158521 A CN201310158521 A CN 201310158521A CN 103216954 A CN103216954 A CN 103216954A
- Authority
- CN
- China
- Prior art keywords
- heat
- water heater
- snake bend
- solar water
- tube
- 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 wrapped solar water heater. The water heater is characterized in that a snake bend pipe is arranged on the back of a heat-absorbing plate, the part, placed horizontally, of the bend pipe is half wrapped with the heat-absorbing plate, the heat exchange area of the snake bend pipe and the heat-absorbing plate is increased, and heat efficiency is improved.
Description
One, technical field
The present invention relates to solar energy heat utilization field, refer in particular to a kind of clad type solar water heater, the absorber of this solar water heater is made of the metal tube and the absorber plate of serpentine bend, and absorber plate is coated on the snake bend.
Two, background technology
Solar water heater is a kind of helioplant that utilizes solar energy to add hot water or heat transfer medium as the energy.The most representative in the prior solar water heater product with vacuum tube type solar energy water heater and plate solar water heater.The vacuum tube collector heat sink is a vacuum tube, and heat loss is little.Compare advantage such as that the plate type solar water heater has is simple in structure, the sunlight footprint is big, 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 shortcomings such as heat loss is big, 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 made up 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 that dielectric viscosity than higher, causes flowing is not smooth, 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 easy airflow flowing, 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.And the space between the existing coiled pipe solar water heater copper pipe is excessive, and making has 40% heat in time to utilize, and address this problem, and tube pitch need be reduced about 50%, and increase contact area between copper pipe and the absorber plate.
Three, summary of the invention
The purpose that the present invention proposes is the contact area of further metal tube and absorber plate, improves the thermal efficiency of solar thermal collector, and for reaching this purpose, snake bend is positioned at the absorber plate behind, and absorber plate coats the metal tube of runs parallel.
For achieving the above object, the present invention adopts following technical scheme:
Solar thermal collector is made up of insulation shell, absorber plate, transparent cover plate, snake bend, ascending tube, return duct, it is characterized in that: snake bend is formed by a metal tube bending, and the metal tube horizontal curvature is put, and tube pitch is between 5 to 7cm.The upper end of snake bend connects ascending tube, and the lower end connects return duct.Snake bend is positioned at the back side of absorber plate, and absorber plate coats the part half of snake bend level.Be filled with the heat-conducting medium of about 30 ℃ of boiling points in the snake bend.
The present invention has compared three advantages with traditional flat-plate solar collector: one is to use low-boiling heat-conducting medium, makes heat-conducting mode become the latent heat circulating heat conduction by the sensible heat circulating heat conduction, and 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, adopt absorber plate to coat the mode of snake bend, increased heat exchange area, improved the utilization rate of absorber plate heat.
Four, 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 this water heater A-A profile.
Fig. 3 is this water heater C place enlarged drawing.
Fig. 4 is this water heater absorber back view.
The position of marking is respectively among the figure: 1, insulation shell; 2, transparent cover plate; 3, absorber plate; 4, snake bend; 5, ascending tube; 6, return duct.
Five, the specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are explained.
Absorber plate 3 fronts are coated with coating for selective absorption, absorb sunlight and are converted into heat energy, heating snake bend 4.The heat-conducting medium heat absorption vaporization of snake bend 4 inside, pressure raises, and flows into the heat abstractor of supporting heat storage water tank inside rapidly from ascending tube 5, becomes liquid after the medium condensation and flows back to snake bend 4 from return duct 6, finishes heat transfer cycle.
Claims (2)
1. clad type solar water heater, this heat collector is made up of insulation shell (1), absorber plate (3), transparent cover plate (2), snake bend (4), ascending tube (5), return duct (6), it is characterized in that: snake bend (4) is formed by a metal tube bending, the metal tube horizontal curvature is put, tube pitch is between 5 to 7cm, snake bend (4) is positioned at the back side of absorber plate (3), and absorber plate (3) coats the part half of snake bend (4) level.
2. a kind of clad type solar water heater according to claim 1 is characterized in that: the upper end of snake bend (4) connects ascending tube (5), and the lower end connects return duct (6), and tube interior is filled with the heat-conducting medium of boiling point about 30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101585215A CN103216954A (en) | 2013-04-26 | 2013-04-26 | Wrapped solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101585215A CN103216954A (en) | 2013-04-26 | 2013-04-26 | Wrapped solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216954A true CN103216954A (en) | 2013-07-24 |
Family
ID=48814970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101585215A Pending CN103216954A (en) | 2013-04-26 | 2013-04-26 | Wrapped solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103216954A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4301789A (en) * | 1976-08-11 | 1981-11-24 | Wolfgang Artweger | Energy conversion apparatus |
| JP2005164132A (en) * | 2003-12-03 | 2005-06-23 | Dainatsukusu:Kk | Solar heat collector panel |
| CN101004297A (en) * | 2007-01-22 | 2007-07-25 | 罗赞继 | Selective absorbing composite membrane coated absorber plate core of solar energy |
| CN102721214A (en) * | 2012-07-03 | 2012-10-10 | 湖北长耀明太阳能股份有限公司 | Flow passage structure for flat-plate solar collector cores and machining method thereof |
| CN102901242A (en) * | 2012-11-14 | 2013-01-30 | 镇江七政新能源有限公司 | Double-coil pipe solar heat collector |
-
2013
- 2013-04-26 CN CN2013101585215A patent/CN103216954A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4301789A (en) * | 1976-08-11 | 1981-11-24 | Wolfgang Artweger | Energy conversion apparatus |
| JP2005164132A (en) * | 2003-12-03 | 2005-06-23 | Dainatsukusu:Kk | Solar heat collector panel |
| CN101004297A (en) * | 2007-01-22 | 2007-07-25 | 罗赞继 | Selective absorbing composite membrane coated absorber plate core of solar energy |
| CN102721214A (en) * | 2012-07-03 | 2012-10-10 | 湖北长耀明太阳能股份有限公司 | Flow passage structure for flat-plate solar collector cores and machining method thereof |
| CN102901242A (en) * | 2012-11-14 | 2013-01-30 | 镇江七政新能源有限公司 | Double-coil pipe solar heat collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |