CN104697184A - Phase-change heat-storage type solar water heater - Google Patents
Phase-change heat-storage type solar water heater Download PDFInfo
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- CN104697184A CN104697184A CN201310655043.9A CN201310655043A CN104697184A CN 104697184 A CN104697184 A CN 104697184A CN 201310655043 A CN201310655043 A CN 201310655043A CN 104697184 A CN104697184 A CN 104697184A
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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 relates to a phase-change heat-storage type solar water heater. The phase-change heat-storage type solar water heater comprises a water inlet pipe, a water outlet pipe, a plurality of vacuum pipes, a gas exhaust pipe and an overtemperature protection device, wherein hollow pipes are respectively arranged in the vacuum pipes, water inlet ends and water outlet ends of the hollow pipes are respectively communicated with the water inlet pipe and the water outlet pipe, phase-change heat-storage media are also respectively arranged in the vacuum pipes, and an end cap is fixedly connected to the bottom of each vacuum pipe; the upper parts of the vacuum pipes are respectively communicated with the gas exhaust pipe through connecting pipes, filter nets are arranged in the connecting pipes, and a gas exhaust valve is mounted on the gas exhaust pipe; the overtemperature protection device comprises a heat storage pipe, connecting pipes and safety valves, wherein both ends of the heat storage pipe are respectively communicated with the water outlet pipe through the connecting pipes, the safety valves are respectively mounted on the connecting pipes, and a condenser is arranged on the heat storage pipe; more than one spiral groove is formed in the inner wall of each hollow pipe. The phase-change heat-storage type solar water heater disclosed by the invention not only is small in size, and can perform secondary heat exchange, but also is high in heat exchanging efficiency and is high in safety.
Description
Technical field
The present invention relates to a kind of phase-change thermal storage type solar water heater, belong to solar energy equipment technical field.
Background technology
Existing solar water heater comprises heat storage water tank equipped mutually and vacuum tube, and heat storage water tank and vacuum tube are contained on support.When solar water heater works, the heat that vacuum tube absorbs solar energy, and re-use after in the water inflow heat storage water tank after heating with heat convection mode, and the solar water heater of this kind of structure takes up room greatly, inconvenience is installed, and can only be single by vacuum tube, the cold water in water tank is heated, heat exchange efficiency is low, cold district is not suitable for yet, because freezing in the easy appearance of cold district solar water heater, solar water heater cisco unity malfunction can be affected time serious, and current are at hollow Bottomhole pressure, bubble can be produced at the inwall of hollow tube, when bubble is more, finally form one deck air film, this air film density is little, poor heat transfer, have impact on the temperature of water in hollow tube, reduce heat transfer efficiency, the air film in metal tube how is stoped to generate, most important to the heat-transfer effect of hollow tube.
Summary of the invention
The object of the invention is: not only volume is little to provide one, can secondary heat exchange, and heat exchange efficiency and the high phase-change thermal storage type solar water heater of security, to overcome the deficiencies in the prior art.
In order to achieve the above object, technical scheme of the present invention is: a kind of phase-change thermal storage type solar water heater, comprise water inlet pipe, outlet pipe and several vacuum tubes, hollow tube is equipped with in several vacuum tubes, the water inlet end of hollow tube and water side are all stretched out outside vacuum tube, and be communicated with outlet pipe with water inlet pipe respectively, and water inlet pipe is lower than outlet pipe
Also be provided with phase-change thermal storage medium respectively in a, several vacuum tubes described, and the bottom of each vacuum tube is all fixedly connected with end cap;
B, also comprise blast pipe, the top of several vacuum tubes is connected with blast pipe respectively by tube connector, and is provided with filter screen in tube connector, and described blast pipe is equipped with air bleeding valve;
C, also comprise overtemperature protection system, overtemperature protection system comprises heat storage tube, tube connector and safety valve, and the two ends of heat storage tube are all communicated with outlet pipe by tube connector, and tube connector is all equipped with safety valve, and heat storage tube is provided with condenser;
The internal perisporium place of d, described hollow tube has the spiral groove of one or more.
Described phase-change thermal storage medium is phase-transition heat-storage paraffin.
Described water inlet pipe, outlet pipe and hollow tube are copper pipe, and vacuum tube is stainless steel tube.
The diameter of described hollow tube is 8 ± 0.8mm, and the diameter of water inlet pipe and outlet pipe is 16 ± 0.8mm.
Described hollow tube is U-tube.
The condenser of described heat storage tube is coated on heat storage tube periphery.
The good effect that the present invention has is: owing to being also provided with phase-change thermal storage medium respectively in several vacuum tubes, when there being sunshine, the heat that vacuum tube absorbs solar energy, directly heat the cold water in hollow tube, and phase-change thermal storage medium can absorb solar energy and storing heat; When not having sunshine, phase-change thermal storage medium can release heat, implements post bake to the cold water in hollow tube, achieves and exchanges the cold water second heat in hollow tube; Again because the present invention is plate armature, do not comprise the heat storage water tank taking large space, therefore, not only take up room little, improve heat exchange efficiency, because the bottom of each vacuum tube is all fixedly connected with end cap, therefore, be convenient to inject phase-change thermal storage medium.
Owing to also comprising blast pipe, the top of several vacuum tubes is connected with blast pipe respectively by tube connector, and the bottom of tube connector is provided with filter screen, the exhaust outlet of described blast pipe is equipped with air bleeding valve, due to phase-change thermal storage medium absorb solar energy and storing heat time, volume can become large, the pressure in vacuum tube can be caused also to become large, if when the pressure in vacuum tube is excessive, air bleeding valve can be opened and reduce pressure, to guarantee security of the present invention.
Owing to also comprising overtemperature protection system, overtemperature protection system comprises heat storage tube, tube connector and safety valve, the two ends of heat storage tube are all communicated with outlet pipe by tube connector, and tube connector is all equipped with safety valve, because phase-change thermal storage medium is when release heat, if heat is excessive, the hot water in outlet pipe can be caused overheated, safety valve on tube connector will be opened, hot water will flow in heat storage tube, condenser on heat storage tube will be lowered the temperature to the temperature of hot water, so just control water temperature without the need to user, just by overtemperature protection system self-regulation, improve security performance.
Because the internal perisporium place of described hollow tube has spiral groove, current are under the obstruction of hollow tube groove, the flow direction can be changed move ahead, the bubble that current produce in sun heating process is taken away, play the effect stoping air film to generate, allow center water stream be filled into wall subsides place and strengthen heat absorption, make heat absorption in the unit interval reach maximum, improve heat exchange efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of detailed description of the invention of the present invention;
Fig. 2 is the A portion enlarged diagram of Fig. 1;
Fig. 3 is the enlarged partial sectional view of hollow tube in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing and the embodiment that provides, the present invention is further illustrated, but be not limited thereto.
As shown in Figure 1, 2, 3, a kind of phase-change thermal storage type solar water heater, comprise water inlet pipe 1, outlet pipe 2 and several vacuum tubes 3, hollow tube 4 is equipped with in several vacuum tubes 3, hollow tube 4 is U-tube, the water inlet end 4-1 of hollow tube 4 and water side 4-2 all stretches out outside vacuum tube 3, and be communicated with outlet pipe 2 with water inlet pipe 1 respectively, and water inlet pipe 1 is lower than outlet pipe 2, also be provided with phase-change thermal storage medium 5 respectively in several vacuum tubes 3 described, and the bottom of each vacuum tube 3 is all fixedly connected with end cap 6; Also comprise blast pipe 7, the top of several vacuum tubes 3 is connected with blast pipe 7 respectively by tube connector 9, and is provided with filter screen 10 in tube connector 9, and described blast pipe 7 is equipped with air bleeding valve 8; Also comprise overtemperature protection system 11, overtemperature protection system 11 comprises heat storage tube 11-1, tube connector 11-2 and safety valve 11-3, the two ends of heat storage tube 11-1 are all communicated with outlet pipe 2 by tube connector 11-2, and tube connector 11-2 is all equipped with safety valve 11-3, and heat storage tube 11-1 is provided with condenser 11-4; The internal perisporium place of described hollow tube 4 has the spiral groove 4-3 of one or more.
As shown in Figure 1, described phase-change thermal storage medium 5 is phase-transition heat-storage paraffin, can improve the temperature of hollow tube 4 inner chamber water.But being not limited to phase-transition heat-storage paraffin, also can be other heat-storing materials such as phase change heat storage balls.
As shown in Figure 1, described water inlet pipe 1, outlet pipe 2 and hollow tube 4 are copper pipe, vacuum tube 3 is stainless steel tube, water inlet pipe 1, outlet pipe 2 and hollow tube 4 adopt copper pipe to be because the heat conductivility of copper pipe is strong, vacuum tube 3 adopts stainless steel tube to be because stainless steel tube antiseptic property is superior, can improve the service life of vacuum tube 3.
As shown in Figure 1, the diameter of described hollow tube 4 is 8mm, and the diameter of water inlet pipe 1 and outlet pipe 2 is 16mm, can reduce usable floor area of the present invention so as far as possible, and can meet most of user's needs.
As shown in Figure 1, because described hollow tube 4 is U-tube, therefore, being flowed by heating cold water one in hollow tube 4 increases heat-exchange time back and forth, makes heat exchange more fully can obtain good heat transfer effect.Certainly, be not limited thereto, hollow tube 4 also can be screwed pipe etc.
The concise and to the point description that the present invention uses is: before use, and phase-change thermal storage medium 5 is injected in the bottom of vacuum tube 3, and through the bottom welding of end cap 6 with vacuum tube 3.During use, the cold water in described water inlet pipe 1 flows in hollow tube 4 and carries out heat exchange, and when there being sunshine, the heat that vacuum tube 3 absorbs solar energy, directly heat the cold water in hollow tube 4, and phase-change thermal storage medium 5 can absorb solar energy and storing heat, its transformation temperature is 56 DEG C, namely after temperature reaches 56 DEG C, phase-change thermal storage medium 5 starts the phase change transition process of its solid to liquid, namely heat is put aside, start to melt, and make himself temperature remain on 56 DEG C, when extraneous water is through hollow tube 4, namely water heated, and its can continuous absorption and store solar heat, when there is no sunshine, phase-change thermal storage medium 5 can release heat, post bake is implemented to the cold water in hollow tube 4, achieves and the cold water second heat in hollow tube is exchanged, improve heat exchange efficiency, water after heating flows into outlet pipe 2 again by hollow tube 4, because the present invention is plate armature, do not comprise the heat storage water tank taking large space, therefore, take up room little, because phase-change thermal storage medium 5 is when release heat, if heat is excessive, the hot water in outlet pipe 2 can be caused overheated, safety valve 11-3 on tube connector 11-2 will open, hot water will flow in heat storage tube 11-1, condenser 11-4 on heat storage tube 11-1 will lower the temperature to the temperature of hot water, so just control water temperature without the need to user, just regulate by overtemperature protection system 11 oneself, prevent hot water temperature overheated and the potential safety hazard brought, improve security performance, tube connector 11-2 is communicated with outlet pipe 2 by three-way pipe, condenser 11-4 is coated on the periphery of heat storage tube 11-1, improve cooling efficiency, safety valve 11-3 then adopts T/P temperature, pressure safety valve.
Internal perisporium place due to described hollow tube 4 has spiral groove 4-3, current are under the obstruction of the groove 4-3 of hollow tube 4, the flow direction can be changed move ahead, the bubble that current produce in sun heating process is taken away, play the effect stoping air film to generate, allow center water stream be filled into wall subsides place and strengthen heat absorption, make heat absorption in the unit interval reach maximum, improve heat exchange efficiency.
Due to phase-change thermal storage medium 5 absorb solar energy and storing heat time, volume can become large, the pressure in vacuum tube 3 can be caused also to become large, if when the pressure in vacuum tube 3 is excessive, air bleeding valve 8 can be opened reduce pressure, to guarantee security of the present invention, make security high, and the bottom of tube connector 9 is provided with filter screen 10, can effectively prevent phase-change thermal storage medium 5 from flowing in blast pipe 7.
Claims (6)
1. a phase-change thermal storage type solar water heater, comprise water inlet pipe (1), outlet pipe (2) and several vacuum tubes (3), hollow tube (4) is equipped with in several vacuum tubes (3), water inlet end (4-1) and water side (4-2) of hollow tube (4) all stretch out vacuum tube (3) outward, and be communicated with outlet pipe (2) with water inlet pipe (1) respectively, and water inlet pipe (1) is lower than outlet pipe (2), it is characterized in that:
Also be provided with phase-change thermal storage medium (5) respectively in a, several vacuum tubes described (3), and the bottom of each vacuum tube (3) is all fixedly connected with end cap (6);
B, also comprise blast pipe (7), the top of several vacuum tubes (3) is connected with blast pipe (7) respectively by tube connector (9), and is provided with filter screen (10) in tube connector (9), described blast pipe (7) is equipped with air bleeding valve (8);
C, also comprise overtemperature protection system (11), overtemperature protection system (11) comprises heat storage tube (11-1), tube connector (11-2) and safety valve (11-3), the two ends of heat storage tube (11-1) are all communicated with outlet pipe (2) by tube connector (11-2), and tube connector (11-2) is all equipped with safety valve (11-3), heat storage tube (11-1) is provided with condenser (11-4);
The internal perisporium place of d, described hollow tube (4) has the spiral groove (4-3) of one or more.
2. phase-change thermal storage type solar water heater according to claim 1, is characterized in that: described phase-change thermal storage medium (5) is phase-transition heat-storage paraffin.
3. phase-change thermal storage type solar water heater according to claim 1, is characterized in that: described water inlet pipe (1), outlet pipe (2) and hollow tube (4) are copper pipe, and vacuum tube (3) is stainless steel tube.
4. phase-change thermal storage type solar water heater according to claim 1, is characterized in that: the diameter of described hollow tube (4) is 8 ± 0.8mm, and the diameter of water inlet pipe (1) and outlet pipe (2) is 16 ± 0.8mm.
5. phase-change thermal storage type solar water heater according to claim 1, is characterized in that: described hollow tube (4) is U-tube.
6. phase-change thermal storage type solar water heater according to claim 1, is characterized in that: the condenser (11-4) of described heat storage tube (11-1) is coated on heat storage tube (11-1) periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655043.9A CN104697184B (en) | 2013-12-09 | 2013-12-09 | Phase-change thermal storage type solar water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310655043.9A CN104697184B (en) | 2013-12-09 | 2013-12-09 | Phase-change thermal storage type solar water heater |
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| CN104697184A true CN104697184A (en) | 2015-06-10 |
| CN104697184B CN104697184B (en) | 2016-05-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020917A (en) * | 2015-07-31 | 2015-11-04 | 江苏启能新能源材料有限公司 | Solar water heater heat storage unit with safety device and installation method of heat storage unit |
| CN110081599A (en) * | 2018-01-25 | 2019-08-02 | 芜湖美的厨卫电器制造有限公司 | Heat from Low-temperature Flue Gas |
| CN110260531A (en) * | 2019-06-15 | 2019-09-20 | 厦门市钛科创科技有限公司 | Phase-change thermal storage solar water heater with adaptive radiator structure |
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| FR2658902A1 (en) * | 1990-02-26 | 1991-08-30 | Acusol Sonnenkollektoren Gmbh | Solar collector device |
| WO2006081608A1 (en) * | 2005-02-04 | 2006-08-10 | Rheem Australia Pty Limited | An overtemperature protection system for a solar water heating system |
| CN201421208Y (en) * | 2009-04-03 | 2010-03-10 | 江苏贝德莱特太阳能科技有限公司 | Flat-plate heat collector pipeline |
| CN201436510U (en) * | 2009-03-27 | 2010-04-07 | 上海锦立新能源科技有限公司 | Water-break overheat protection device and solar water heater for preventing water-break overheat |
| CN201443900U (en) * | 2009-07-01 | 2010-04-28 | 张绍君 | Phase-change heat-storing solar energy water heater |
| CN201450465U (en) * | 2009-05-31 | 2010-05-05 | 江苏贝德莱特太阳能科技有限公司 | Heat pipe-type solar power generating device |
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2013
- 2013-12-09 CN CN201310655043.9A patent/CN104697184B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2658902A1 (en) * | 1990-02-26 | 1991-08-30 | Acusol Sonnenkollektoren Gmbh | Solar collector device |
| WO2006081608A1 (en) * | 2005-02-04 | 2006-08-10 | Rheem Australia Pty Limited | An overtemperature protection system for a solar water heating system |
| CN201436510U (en) * | 2009-03-27 | 2010-04-07 | 上海锦立新能源科技有限公司 | Water-break overheat protection device and solar water heater for preventing water-break overheat |
| CN201421208Y (en) * | 2009-04-03 | 2010-03-10 | 江苏贝德莱特太阳能科技有限公司 | Flat-plate heat collector pipeline |
| CN201450465U (en) * | 2009-05-31 | 2010-05-05 | 江苏贝德莱特太阳能科技有限公司 | Heat pipe-type solar power generating device |
| CN201443900U (en) * | 2009-07-01 | 2010-04-28 | 张绍君 | Phase-change heat-storing solar energy water heater |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020917A (en) * | 2015-07-31 | 2015-11-04 | 江苏启能新能源材料有限公司 | Solar water heater heat storage unit with safety device and installation method of heat storage unit |
| CN105020917B (en) * | 2015-07-31 | 2017-07-25 | 江苏启能新能源材料有限公司 | A kind of solar water heater heat storage units with safety device and its installation method |
| CN110081599A (en) * | 2018-01-25 | 2019-08-02 | 芜湖美的厨卫电器制造有限公司 | Heat from Low-temperature Flue Gas |
| CN110260531A (en) * | 2019-06-15 | 2019-09-20 | 厦门市钛科创科技有限公司 | Phase-change thermal storage solar water heater with adaptive radiator structure |
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| Publication number | Publication date |
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| CN104697184B (en) | 2016-05-18 |
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