CN102901242A - Double-coil pipe solar heat collector - Google Patents
Double-coil pipe solar heat collector Download PDFInfo
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- CN102901242A CN102901242A CN201210454924XA CN201210454924A CN102901242A CN 102901242 A CN102901242 A CN 102901242A CN 201210454924X A CN201210454924X A CN 201210454924XA CN 201210454924 A CN201210454924 A CN 201210454924A CN 102901242 A CN102901242 A CN 102901242A
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- Prior art keywords
- heat
- coiled pipe
- tube
- bifilar
- collector
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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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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a solar heat collector, which is characterized in that heat conducting medium with a boiling point of 30-50 DEG C is filled in two copper pipes welded on the back of a heat collecting plate, and the two copper pipes are bent to double coil pipes to improve the distribution density of pipes on the heat absorption plate and improve the heat utilization rate of the heat absorption plate.
Description
Technical field
The present invention relates to solar energy heat utilization field, refer in particular to a kind of absorber and adopt two copper pipes to do snakelike coiling and be welded on the solar thermal collector that absorber plate consists of later.
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.And the space between the existing coiled pipe solar water heater copper pipe is excessive, so that there is 40% heat in time to utilize, address this problem, and tube pitch need to be reduced about 50%.
Summary of the invention
The purpose that the present invention proposes is further to increase the pipe distribution density, improve the thermal efficiency of solar thermal collector, for reaching this purpose, the copper pipe inside that collecting plate welds behind is filled with boiling point at 30 to 50 ℃ heat-conducting medium, and adopt two copper pipes to do serpentine bend, reduce tube pitch.
For achieving the above object, the present invention adopts following technical scheme: solar thermal collector is comprised of insulation shell, absorber plate, transparent cover plate, bifilar coiled pipe, ascending tube, return duct, it is characterized in that: bifilar coiled pipe is formed by two copper pipe bendings, the copper pipe horizontal curvature is put, tube pitch is between 5 to 7cm, the upper end of bifilar coiled pipe collects in ascending tube, and the lower end collects in return duct.The sectional area of ascending tube and return duct is 2 times of bifilar coiled pipe, and tube interior is filled with the heat-conducting medium of boiling point about 30 ℃.
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, adopt bifilar coiled pipe to increase the pipe distribution density, increased the utilization rate of absorber plate heat.
Description of drawings
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is the schematic appearance of this heat collector.
Fig. 2 is this heat collector A-A profile.
Fig. 3 is this heat collector heat absorbing part back view.
The position of marking is respectively among the figure: 1, insulation shell; 2, transparent cover plate; 3, bifilar coiled pipe; 4, absorber plate; 5, ascending tube; 6, return duct.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are explained.
Claims (2)
1. two coiled pipe solar thermal collector, this heat collector is comprised of insulation shell (1), transparent cover plate (2), bifilar coiled pipe (3), absorber plate (4), ascending tube (5), return duct (6), it is characterized in that: bifilar coiled pipe (3) is formed by two copper pipe bendings, the copper pipe horizontal curvature is put, tube pitch is between 5 to 7cm, the upper end of bifilar coiled pipe (3) collects in ascending tube (5), and the lower end collects in return duct (6).
2. according to claim 1 pair of coiled pipe solar thermal collector, it is characterized in that: the sectional area of ascending tube (5) and return duct (6) is 2 times of bifilar coiled pipe (3), 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 |
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CN201210454924XA CN102901242A (en) | 2012-11-14 | 2012-11-14 | Double-coil pipe solar heat collector |
Applications Claiming Priority (1)
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CN201210454924XA CN102901242A (en) | 2012-11-14 | 2012-11-14 | Double-coil pipe solar heat collector |
Publications (1)
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CN102901242A true CN102901242A (en) | 2013-01-30 |
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CN201210454924XA Pending CN102901242A (en) | 2012-11-14 | 2012-11-14 | Double-coil pipe solar heat collector |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103216954A (en) * | 2013-04-26 | 2013-07-24 | 江苏七政新能源有限公司 | Wrapped solar water heater |
CN103234282A (en) * | 2013-04-26 | 2013-08-07 | 江苏七政新能源有限公司 | Flat plate-shaped solar energy water heater group |
CN103234285A (en) * | 2013-04-26 | 2013-08-07 | 江苏七政新能源有限公司 | Wave-shaped solar water heater |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10011052A1 (en) * | 2000-03-07 | 2002-04-04 | Sack Robert | Solar collector has parabolic channel which fills out surface of molded piece covered by transparent plate and pipeline conducting medium is covered |
CN201081442Y (en) * | 2007-07-19 | 2008-07-02 | 罗树臣 | Thermotube plate type split passive high-efficiency solar heat hot water system |
DE202009006077U1 (en) * | 2009-04-22 | 2009-09-10 | Schmid-Rapp, Beate | Flat collector with safety glass cover for water heating of chlorine and saline water in the swimming pool u. whirlpool |
CN101825345A (en) * | 2010-05-13 | 2010-09-08 | 铜陵市清华宝能源设备有限责任公司 | Antifreezing method of flat plate solar water heater |
CN201672709U (en) * | 2010-05-22 | 2010-12-15 | 浙江梅地亚新能源科技有限公司 | Serpentine pipe type flat plate solar collector |
DE202010015366U1 (en) * | 2010-11-11 | 2011-01-20 | Robert Bosch Gmbh | Solar thermal absorber |
CN201811456U (en) * | 2010-07-15 | 2011-04-27 | 杨宪杰 | S-shaped inclined heat absorption flow passage of balcony-type flat panel solar heat collector |
CN102679575A (en) * | 2012-04-27 | 2012-09-19 | 镇江新梦溪能源科技有限公司 | Flat-plate solar water heater with snakelike flow passage |
-
2012
- 2012-11-14 CN CN201210454924XA patent/CN102901242A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10011052A1 (en) * | 2000-03-07 | 2002-04-04 | Sack Robert | Solar collector has parabolic channel which fills out surface of molded piece covered by transparent plate and pipeline conducting medium is covered |
CN201081442Y (en) * | 2007-07-19 | 2008-07-02 | 罗树臣 | Thermotube plate type split passive high-efficiency solar heat hot water system |
DE202009006077U1 (en) * | 2009-04-22 | 2009-09-10 | Schmid-Rapp, Beate | Flat collector with safety glass cover for water heating of chlorine and saline water in the swimming pool u. whirlpool |
CN101825345A (en) * | 2010-05-13 | 2010-09-08 | 铜陵市清华宝能源设备有限责任公司 | Antifreezing method of flat plate solar water heater |
CN201672709U (en) * | 2010-05-22 | 2010-12-15 | 浙江梅地亚新能源科技有限公司 | Serpentine pipe type flat plate solar collector |
CN201811456U (en) * | 2010-07-15 | 2011-04-27 | 杨宪杰 | S-shaped inclined heat absorption flow passage of balcony-type flat panel solar heat collector |
DE202010015366U1 (en) * | 2010-11-11 | 2011-01-20 | Robert Bosch Gmbh | Solar thermal absorber |
CN102679575A (en) * | 2012-04-27 | 2012-09-19 | 镇江新梦溪能源科技有限公司 | Flat-plate solar water heater with snakelike flow passage |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103216954A (en) * | 2013-04-26 | 2013-07-24 | 江苏七政新能源有限公司 | Wrapped solar water heater |
CN103234282A (en) * | 2013-04-26 | 2013-08-07 | 江苏七政新能源有限公司 | Flat plate-shaped solar energy water heater group |
CN103234285A (en) * | 2013-04-26 | 2013-08-07 | 江苏七政新能源有限公司 | Wave-shaped solar water heater |
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Application publication date: 20130130 |