CN103968575A - Solar water heater - Google Patents
Solar water heater Download PDFInfo
- Publication number
- CN103968575A CN103968575A CN201410185630.0A CN201410185630A CN103968575A CN 103968575 A CN103968575 A CN 103968575A CN 201410185630 A CN201410185630 A CN 201410185630A CN 103968575 A CN103968575 A CN 103968575A
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- Prior art keywords
- communicated
- heat
- solar
- water heater
- condenser
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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 which comprises a solar heat collector and a heat storage water tank. A condenser is arranged in the heat storage water tank and communicated with the solar heat collector through a pipe, a heat collecting panel is arranged on the solar heat collector, a plurality of backflow branch pipes are arranged on the heat collecting panel at intervals, the upper ends of the backflow branch pipes are communicated through an upper collecting pipe, the lower ends of the backflow branch pipes are communicated through a lower collecting pipe, an air inlet of the condenser is communicated with the upper collecting pipe through a connecting pipe, a backflow opening of the condenser is communicated with the lower collecting pipe through a backflow pipe, an air discharging and liquid charging valve is arranged on the connecting pipe, and a heat preservation layer is arranged on the outer wall of the heat storage water tank. According to the solar water heater, phase change heat transferring is adopted, the heat transferring efficiency is greatly improved, and the aim that the solar water heater is resistant to freezing in winter is effectively achieved.
Description
Technical field
The present invention relates to solar water heater, particularly a kind of solar water heater that adopts liquid medium phase-change heat transfer.
Background technology
Solar water heater is a kind of helioplant of solar energy as energy sources for heating water or heat transfer medium that utilize.
Traditional flat plate solar water heater is by heat storage water tank, heat collector, connecting pipe and is configured to.Heat storage water tank entery and delivery port is connected with delivery port and the water inlet of heat collector respectively by connecting pipe, forms circulation canal.Heat collector by solar radiation after temperature rise, water flow through after heat collector heated.Water in heat storage water tank is by connecting pipe flow through heat collector constantly circulation, and the water in heat storage water tank is just heated gradually.This water heater is to rely on water circulation that the heat in heat collector is taken in heat storage water tank, and the efficiency of its heat delivery depends on the state of circulation.Adopt water pump to drive water to circulate in pipeline, need power, consumed energy.Because need the water transfer heat that circulates in pipeline, use lower than the area of 0 DEG C at temperature, need to take antifreezing measures, otherwise heat collector and circulating line can be by bursting by freezing.
Summary of the invention
The object of the invention is the above-mentioned defect for prior art, the solar water heater of phase-change heat transfer of the present invention, can overcome the above problems effectively, and the efficiency of heat delivery is higher.
For solving the above-mentioned defect of prior art, technical scheme provided by the invention is: a kind of solar water heater, comprise solar thermal collector and heat storage water tank, the outer wall of described heat storage water tank has one layer of heat preservation layer, in described heat storage water tank, be provided with a condenser, described condenser is communicated with described solar thermal collector by pipeline, described solar thermal collector is provided with a thermal-arrest panel, on described thermal-arrest panel, interval is welded with many backflow arms, the upper end of every described backflow arm is communicated with by upper header, the lower end of every described backflow arm is communicated with by lower collector pipe, the air inlet of described condenser is communicated with described upper header by tube connector, the refluxing opening of described condenser is communicated with described lower collector pipe by return duct, described tube connector is provided with exhaust prefill valve.The condenser being coupled together by pipeline becomes sealing state with heat collector pipe-line system.By described exhaust prefill valve, pipe-line system is evacuated, a certain amount of working solution that reinjects, then closes described exhaust prefill valve keeping system and atmospheric isolation.
Technical scheme provided by the invention also comprises, the working solution that is filled with system can not exceed heat collector volume, should reserve segment space.The amount of being filled with of described working solution, for heat collector pipeline inner capacities 60% ~ 80% for well.
Described working solution is to have good chemical stability at-50 DEG C～200 DEG C, and system material therefor is had to the liquid of good compatibility.For example water, acetone, methyl alcohol, ethanol, ethylene glycol, or their aqueous solution.When described working solution adopts lower boiling liquid medium, can obtain good cold-starting characteristic.When described working solution adopts the liquid medium of different low freezing points, can obtain corresponding freeze proof characteristic.
Technical scheme provided by the invention also comprises, the installation site of described heat storage water tank makes condenser air inlet position wherein and connecting pipe thereof the position higher than the upper header of described heat collector; Make condenser refluxing opening position wherein and reflux line thereof the position higher than the lower collector pipe of described heat collector; The steam that can make like this heat collector produce enters condenser smoothly, and the working solution that condenser condenses can be back to lower collector pipe smoothly, can obtain higher heat transfer efficiency.
One as solar water heater of the present invention is improved, and the distance between every two described backflow arms equates, the straight tube that described backflow arm is.
One as solar water heater of the present invention is improved, and described backflow arm is a pipeline that curves serpentine.
One as solar water heater of the present invention is improved, and described backflow arm is located on the inner surface of described thermal-arrest panel.
One as solar water heater of the present invention is improved, and described backflow arm is embedded in described thermal-arrest panel.
One as solar water heater of the present invention is improved, and the thickness of described heat-insulation layer is 3cm～5cm.
The operation principle of this solar water heater is: absorb solar infrared by solar thermal collector and obtain heat, then in a certain way heat delivery is stored to heat storage water tank.The solar water heater of this phase-change heat transfer, in heat delivery mode, is to become gaseous state based on working solution by liquid state heat absorption, by the principle of gaseous state heat release liquefy, and the heat collector, heat storage water tank and the connecting pipe that design.Its objective is and allow working solution that endothermic gasification occurs in heat collector, steam enters heat release in the condenser being arranged in heat storage water tank and condenses, and is then back to heat collector endothermic gasification again through connecting pipe, and maintains this process and constantly go on.
The course of work of solar water heater of the present invention is: described thermal-arrest panel absorbs solar infrared and obtains heat, by the working solution heating in arm, working solution endothermic gasification, steam enters upper header and collects, enter in the condenser being arranged in heat storage water tank by tube connector again, the water generation exchange heat of steam in wall and the heat storage water tank of condenser, after emitting heat, condense into liquid at wall, liquid is along entering return duct by refluxing opening under wall flow, and then enter lower collector pipe, enter each root arm by lower collector pipe, again by heat collector heating and gasifying, form circulation.
Compared with prior art, advantage of the present invention is: solar water heater system has been formed cleverly a heat pipe for thermal conductivity system by the present invention, the efficiency of its heat conduction improves greatly, do not need additional cycles power, while adopting the working solution of low boiling, low freezing point, have more the feature fast and can be effectively freeze proof that starts.
Brief description of the drawings
Fig. 1 is the embodiment of the present invention one structural representation.
Fig. 2 is the embodiment of the present invention two structural representations.
Reference numeral title: 1, solar thermal collector 2, heat storage water tank 3, condenser 4, thermal-arrest panel 5, upper header 6, lower collector pipe 7, tube connector 8, return duct 9, exhaust prefill valve 10, backflow arm 11, heat-insulation layer.
Detailed description of the invention
Just the invention will be further described with reference to the accompanying drawings below.
embodiment mono-:as shown in Figure 1, a kind of solar water heater, comprise solar thermal collector 1 and heat storage water tank 2, in heat storage water tank 2, be provided with a condenser 3, condenser 3 is communicated with solar thermal collector 1 by pipeline, solar thermal collector 1 is provided with a thermal-arrest panel 4, the outer surface of thermal-arrest panel 4 is interval with many backflow arms 10, the upper end of every backflow arm 10 is communicated with by upper header 5, the lower end of every backflow arm 10 is communicated with by lower collector pipe 6, the air inlet of condenser 3 is communicated with upper header 5 by tube connector 7, the refluxing opening of condenser 3 is communicated with lower collector pipe 6 by return duct 8, tube connector 7 is provided with exhaust prefill valve 9, the outer wall of heat storage water tank 2 has one layer of heat preservation layer 11.
By exhaust prefill valve 9, pipe-line system is evacuated, a certain amount of working solution that reinjects after being evacuated, then closes described exhaust prefill valve keeping system and atmospheric isolation.Described thermal-arrest panel 4 absorbs solar infrared and obtains heat, by the working solution heating in arm 10, working solution endothermic gasification, steam enters upper header 5 and collects, enter in the condenser 3 being arranged in heat storage water tank by tube connector 7 again, the water generation exchange heat of steam in wall and the heat storage water tank 2 of condenser 3, after emitting heat, condense into liquid at wall, liquid is along entering return duct 8 by refluxing opening under wall flow, and then enter lower collector pipe 6, enter each root arm 10 by lower collector pipe 6, again by heat collector heating and gasifying, form circulation.
Described working solution can be the one in following: the aqueous solution of the glycol water of pure water, variable concentrations and acetone, methyl alcohol or ethanol; The amount being filled with is 60% to 80% of heat collector volume.
Preferably, the distance between every two backflow arms 10 equates.Ensure that every condensate liquid or heat-conducting medium in backflow arm 10 is heated evenly.
Preferably, the thickness of heat-insulation layer 11 is 3cm～5cm.
Preferably, heat-insulation layer 11 is insulating sponge member.
embodiment bis-: as shown in Figure 2, a kind of solar water heater, comprise solar thermal collector 1 and heat storage water tank 2, in heat storage water tank 2, be provided with a condenser 3, condenser 3 is communicated with solar thermal collector 1 by pipeline, solar thermal collector 1 is provided with a thermal-arrest panel 4, thermal-arrest panel 4 is provided with the backflow arm 10 that curves serpentine, the upper end of backflow arm 10 is communicated with upper header 5, the lower end of backflow arm 10 is communicated with lower collector pipe 6, the air inlet of condenser 3 is communicated with upper header 5 by tube connector 7, the refluxing opening of condenser 3 is communicated with lower collector pipe 6 by return duct 8, tube connector 7 is provided with exhaust prefill valve 9, the outer wall of heat storage water tank 2 has one layer of heat preservation layer 11.
Preferably, upper header 5 and lower collector pipe 6 are communicated with by the many backflow arms 10 that curve serpentine.Upper header 5 and lower collector pipe 6 are communicated with by the many backflow arms 10 that curve serpentine, have accelerated the firing rate of condensate liquid, take full advantage of the heat of thermal-arrest panel 4.
Claims (7)
1. a solar water heater, comprise solar thermal collector (1) and heat storage water tank (2), it is characterized in that, the outer wall of described heat storage water tank (2) is provided with one layer of heat preservation layer (11), in described heat storage water tank (2), be provided with a condenser (3), described condenser (3) is communicated with described solar thermal collector (1) by pipeline, described solar thermal collector (1) is provided with a thermal-arrest panel (4), the upper interval of described thermal-arrest panel (4) is welded with many backflow arms (10), the upper end of every described backflow arm (10) is communicated with by upper header (5), the lower end of every described backflow arm (10) is communicated with by lower collector pipe (6), the air inlet of described condenser (3) is communicated with described upper header (5) by tube connector (7), the refluxing opening of described condenser (3) is communicated with described lower collector pipe (6) by return duct (8), described tube connector (7) is provided with exhaust prefill valve (9).
2. solar water heater according to claim 1, it is characterized in that, described condenser (3) respectively with described tube connector (7), upper header (5), return duct (8), lower collector pipe (6),, backflow arm (10), exhaust prefill valve (9) be communicated with.
3. solar water heater according to claim 1, is characterized in that, the installation site of described condenser (3) and described tube connector (7) is higher than described upper header (5); The installation site of described condenser (3) and described return duct (8) is higher than described lower collector pipe (6).
4. solar water heater according to claim 1, is characterized in that, described solar thermal collector is provided with working solution in (1).
5. according to claim 1 and solar water heater claimed in claim 4, it is characterized in that, described working solution is any one in following solution: the glycol water of pure water, variable concentrations and acetone, methyl alcohol or ethanol, or their aqueous solution.
6. solar water heater according to claim 1, is characterized in that, the distance between every two adjacent described backflow arms (10) equates, the straight tube that described backflow arm (10) is.
7. solar water heater according to claim 1, is characterized in that, described backflow arm (10) is one to curve the pipeline of serpentine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185630.0A CN103968575A (en) | 2014-05-05 | 2014-05-05 | Solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185630.0A CN103968575A (en) | 2014-05-05 | 2014-05-05 | Solar water heater |
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| Publication Number | Publication Date |
|---|---|
| CN103968575A true CN103968575A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410185630.0A Pending CN103968575A (en) | 2014-05-05 | 2014-05-05 | Solar water heater |
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| CN (1) | CN103968575A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061131A (en) * | 1975-11-24 | 1977-12-06 | Acme Engineering And Manufacturing Corporation | Heat transfer system particularly applicable to solar heating installations |
| CN2167328Y (en) * | 1993-09-02 | 1994-06-01 | 山东省科学院能源研究所 | Combination type heat-pipe solar energy water heater |
| CN2184898Y (en) * | 1994-03-18 | 1994-12-07 | 王金生 | Solar balcony water heater |
| CN2520486Y (en) * | 2001-12-30 | 2002-11-13 | 上海交通大学 | Direct expansion solar heat pump water heater |
| CN2861889Y (en) * | 2005-10-24 | 2007-01-24 | 喜春野 | Split assembled external-recycling super-heat pipe anti-refrigeration planet solar water heater |
| CN101793080A (en) * | 2009-12-23 | 2010-08-04 | 四川盛阳太阳能应用技术有限公司 | Embedded flat heat collecting roof/wall surface |
| CN101929745A (en) * | 2010-08-06 | 2010-12-29 | 浙江梅地亚新能源科技有限公司 | Superconducting flat solar water heater |
| CN101943492A (en) * | 2010-09-14 | 2011-01-12 | 苏州汇思阳光科技有限公司 | Automatic temperature control solar water heating system |
| CN102538243A (en) * | 2012-03-12 | 2012-07-04 | 中南大学 | Flat-plate type solar water heater device |
| CN103453679A (en) * | 2013-08-15 | 2013-12-18 | 常州市康舒环境科技有限公司 | Household wall-mounted flat solar heat-pump water heater and control method thereof |
| CN203980674U (en) * | 2014-05-05 | 2014-12-03 | 何志远 | A kind of solar water heater |
-
2014
- 2014-05-05 CN CN201410185630.0A patent/CN103968575A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061131A (en) * | 1975-11-24 | 1977-12-06 | Acme Engineering And Manufacturing Corporation | Heat transfer system particularly applicable to solar heating installations |
| CN2167328Y (en) * | 1993-09-02 | 1994-06-01 | 山东省科学院能源研究所 | Combination type heat-pipe solar energy water heater |
| CN2184898Y (en) * | 1994-03-18 | 1994-12-07 | 王金生 | Solar balcony water heater |
| CN2520486Y (en) * | 2001-12-30 | 2002-11-13 | 上海交通大学 | Direct expansion solar heat pump water heater |
| CN2861889Y (en) * | 2005-10-24 | 2007-01-24 | 喜春野 | Split assembled external-recycling super-heat pipe anti-refrigeration planet solar water heater |
| CN101793080A (en) * | 2009-12-23 | 2010-08-04 | 四川盛阳太阳能应用技术有限公司 | Embedded flat heat collecting roof/wall surface |
| CN101929745A (en) * | 2010-08-06 | 2010-12-29 | 浙江梅地亚新能源科技有限公司 | Superconducting flat solar water heater |
| CN101943492A (en) * | 2010-09-14 | 2011-01-12 | 苏州汇思阳光科技有限公司 | Automatic temperature control solar water heating system |
| CN102538243A (en) * | 2012-03-12 | 2012-07-04 | 中南大学 | Flat-plate type solar water heater device |
| CN103453679A (en) * | 2013-08-15 | 2013-12-18 | 常州市康舒环境科技有限公司 | Household wall-mounted flat solar heat-pump water heater and control method thereof |
| CN203980674U (en) * | 2014-05-05 | 2014-12-03 | 何志远 | A kind of solar water heater |
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Application publication date: 20140806 |