WO2014206028A1 - Chauffe-eau solaire à accumulation thermique par changement de phase avec dispositif anti-surchauffe - Google Patents

Chauffe-eau solaire à accumulation thermique par changement de phase avec dispositif anti-surchauffe Download PDF

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Publication number
WO2014206028A1
WO2014206028A1 PCT/CN2013/089441 CN2013089441W WO2014206028A1 WO 2014206028 A1 WO2014206028 A1 WO 2014206028A1 CN 2013089441 W CN2013089441 W CN 2013089441W WO 2014206028 A1 WO2014206028 A1 WO 2014206028A1
Authority
WO
WIPO (PCT)
Prior art keywords
water heater
solar water
phase change
evaporation
protection device
Prior art date
Application number
PCT/CN2013/089441
Other languages
English (en)
Chinese (zh)
Inventor
王鈜
汤雪飞
王志
陈小龙
范建峰
Original Assignee
江苏启能新能源材料有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏启能新能源材料有限公司 filed Critical 江苏启能新能源材料有限公司
Publication of WO2014206028A1 publication Critical patent/WO2014206028A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/50—Preventing overheating or overpressure
    • F24S40/55—Arrangements for cooling, e.g. by using external heat dissipating means or internal cooling circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
    • F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
    • 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

Definitions

  • the invention relates to a phase change heat storage solar water heater with a thermal protection device, belonging to the field of solar thermal technology.
  • China is one of the most solar-rich countries in the world.
  • the total amount of solar radiation in China is more than 5.02 million kJ, and the area with 2,250 hours of sunshine per year accounts for more than 2/3 of China's land area, especially in the western region.
  • the sunshine time is over 3,000 hours.
  • China's use of solar energy has achieved remarkable results.
  • the solar water heater industry is developing rapidly, and it is becoming an emerging industry.
  • the domestic solar water heaters mainly include: smouldering solar water heaters, flat solar water heaters, Glass vacuum tube solar water heater and heat pipe glass vacuum tube solar water heater, etc.
  • low-end solar collectors using plastic-water pipes.
  • Phase change energy storage and technology can store energy in the form of phase change latent heat in phase change materials.
  • phase Change Materials PCMs
  • PCMs Phase Change Materials
  • phase change energy storage technology Compared with sensible heat storage technology, phase change energy storage technology has the advantages of high energy storage density, compact size, constant temperature control, remarkable energy saving effect, wide selection range of phase change temperature, easy control, etc., in aerospace, solar energy utilization, There are broad prospects in many areas such as picking and air conditioning, power supply system optimization, medical engineering, military engineering, thermal storage buildings and extreme environmental clothing.
  • T/P valve temperature-limiting drainage or sunshade The existing anti-overheating measures for phase change heat storage solar water heaters generally use T/P valve temperature-limiting drainage or sunshade to prevent overheating.
  • T/P valve temperature and waterproof need to ensure that the phase change heat storage solar water heater and tap water are unblocked.
  • the house has not been delivered or is unoccupied for a long time, there is a danger of overheating due to the failure of the tap water, and the hot water is discharged when the overheat protection starts.
  • With automatic sunshade the system is complex, the investment is large, the failure rate is high, and the power is also consumed.
  • the object of the present invention is to provide a phase change heat storage solar water heater with a thermal protection device.
  • the technical solution adopted by the present invention is: a phase change heat storage solar water heater with a thermal protection device, comprising a phase change heat storage solar water heater and an overheat protection device carrying an evaporation medium therein;
  • the protection device includes an evaporation tube that evaporates the evaporation medium into a vapor body and a condensation tube that condenses the vapor body into an evaporation medium, and an outlet end of the evaporation tube communicates with an inlet end of the condensation tube, the condensation tube The outlet end is in communication with the inlet end of the evaporation tube; the evaporation tube is wholly or partially embedded in the phase change heat storage solar water heater.
  • the evaporation tube is in heat transfer contact with the heat exchange tube in the phase change heat storage solar water heater.
  • the outlet end of the condensing duct communicates with the inlet end of the evaporation tube through a pipeline.
  • an air tank is connected to the pipeline or the condensation pipe.
  • the evaporation medium is a material having a boiling point of less than or equal to 150 °C.
  • the evaporation medium is alcohol, water or antifreeze.
  • the invention adopts an evaporation tube and a condensing tube to form a loop, and internally injects an evaporation medium, and automatically circulates in the case of a water source and a power source to ensure the water heater.
  • the internal temperature is not too high.
  • the overheat protection device does not depend on tap water and power supply, saves water and electricity, and has a simple structure and reliable performance.
  • Figure 1 is a schematic view of the present invention.
  • phase change heat storage solar water heater 2, evaporation tube; 3, air tank; 4, condensation tube; 5, pipeline.
  • Embodiment A phase change heat storage solar water heater with overheat protection device
  • a phase change heat storage solar water heater with a thermal protection device includes a phase change heat storage solar water heater 1 and an overheat protection device internally carrying an evaporation medium;
  • An evaporation tube 2 which evaporates into a vapor body and a condensation tube 4 which condenses the vapor body into an evaporation medium, and an outlet end of the evaporation tube 2 communicates with an inlet end of the condensation tube 4, the condensation tube 4 The outlet end is in communication with the inlet end of the evaporation tube 2; the evaporation tube 2 is wholly or partially embedded in the phase change heat storage solar water heater 1.
  • the evaporation tube is in heat transfer contact with the heat exchange tube in the phase change heat storage solar water heater.
  • the outlet end of the condensing duct 4 communicates with the inlet end of the evaporator tube 2 through a line 5.
  • An air tank 3 is connected to the pipe or the condensing pipe.
  • the evaporation medium is a material having a boiling point of less than or equal to 150 °C.
  • the evaporation medium may specifically be selected from alcohol, water or antifreeze. In this embodiment, alcohol is specifically selected.
  • the characteristics of the phase change heat storage solar water heater 1 are: When the user does not use, there is no water flow inside the phase change heat storage solar water heater 1, and the solar radiation energy is converted into heat energy and stored in the phase change heat storage material. When the user uses, the water flows through the phase change heat storage solar water heater 1, and the water flow and the phase change heat storage material exchange heat, and the heat brings out the phase change heat storage solar water heater 1 along with the water flow. If the radiation is strong and the user is not using the phase change heat storage solar water heater 1, the energy accumulation of the phase change heat storage material will increase the temperature of the phase change heat storage material, which may damage the phase change due to overheating.
  • the invention designs a circuit composed of the evaporation tube 2 and the condensation tube 4.
  • the temperature of the phase change heat storage material in the solar water heater 1 with the phase change heat storage is When the temperature rises, the temperature of the evaporation medium in the evaporation tube 2 also rises until the evaporation medium becomes steam, and then the steam enters the condensation tube 24, and the condensation tube is disposed outside the phase change heat storage solar water heater 1 and condenses
  • the structure of the tube 4 is such that the tubular member peripherally has a plurality of fins, so that the vapor condenses in the condenser tube 4 to become an evaporation medium in a liquid state.
  • the air tank 3 is provided on the condensing pipe 4 in order to cause an impact on the circuit formed by the evaporation pipe 2 and the condensing pipe 4 when the amount of steam formed by evaporation of the evaporation medium is excessive when the radiation is strong, since the air tank 3 is set up.
  • the pipe 5 is convenient for the connection of the evaporation pipe 2 and the condensing pipe 4, and a pipe may be added at the outlet end of the evaporation pipe and the inlet end of the condensing pipe 4.
  • the invention adopts an evaporation tube, a condensation tube, an air tank and a connecting pipeline to form a self-circulating system.
  • the evaporation tube is in close contact with the heat exchange tube inside the water heater, and the medium can be evaporated.
  • the evaporation medium evaporates into a vapor to remove the heat, and the heat is condensed into a liquid at the condensation tube and then returned to the evaporation.
  • the tube prevents the internal temperature of the collector from being too high by self-circulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Chauffe-eau solaire à accumulation thermique par changement de phase avec dispositif anti-surchauffe, comportant un chauffe-eau solaire (1) à accumulation thermique par changement de phase et un dispositif anti-surchauffe doté d'un milieu d'évaporation incorporé. Le dispositif anti-surchauffe comporte un tuyau (2) d'évaporation servant à évaporer le milieu d'évaporation pour donner du gaz et un tuyau (4) de condensation servant à condenser le gaz pour donner le milieu d'évaporation, une sortie du tuyau (2) d'évaporation étant mise en communication avec une entrée du tuyau (4) de condensation, et une sortie du tuyau (4) de condensation étant mise en communication avec une entrée du tuyau (2) d'évaporation. Le tuyau (2) d'évaporation est entièrement ou partiellement encastré dans le chauffe-eau solaire (1) à accumulation thermique par changement de phase. Le tuyau (2) d'évaporation et le tuyau (4) de condensation forment une boucle, le milieu d'évaporation remplit la boucle, et la boucle peut circuler automatiquement sans alimentation en eau ni alimentation en énergie, empêchant ainsi la température interne du chauffe-eau solaire (1) à accumulation thermique par changement de phase d'être excessivement élevée.
PCT/CN2013/089441 2013-06-25 2013-12-13 Chauffe-eau solaire à accumulation thermique par changement de phase avec dispositif anti-surchauffe WO2014206028A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310255815XA CN103307782A (zh) 2013-06-25 2013-06-25 一种带过热保护装置的相变储热太阳能热水器
CN201310255815.X 2013-06-25

Publications (1)

Publication Number Publication Date
WO2014206028A1 true WO2014206028A1 (fr) 2014-12-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/089441 WO2014206028A1 (fr) 2013-06-25 2013-12-13 Chauffe-eau solaire à accumulation thermique par changement de phase avec dispositif anti-surchauffe

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Country Link
CN (1) CN103307782A (fr)
WO (1) WO2014206028A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307782A (zh) * 2013-06-25 2013-09-18 江苏启能新能源材料有限公司 一种带过热保护装置的相变储热太阳能热水器
CN105509341B (zh) * 2015-12-22 2017-09-12 苏州苏净安发空调有限公司 一种平板太阳能加热器及太阳能热水器
CN105758023B (zh) * 2016-05-21 2018-06-26 蓝立概 直接散热的相变储热太阳能热水器

Citations (7)

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US4270521A (en) * 1979-08-15 1981-06-02 Brekke Carroll Ellerd Solar heating system
JPS58150752A (ja) * 1982-03-02 1983-09-07 Hitachi Chem Co Ltd 環状熱サイフオン
CN101846399A (zh) * 2009-03-27 2010-09-29 上海锦立新能源科技有限公司 带过热保护装置的太阳能相变蓄热热水器
WO2012110916A2 (fr) * 2011-02-15 2012-08-23 Tigi Ltd. Mécanisme de protection contre la surchauffe destiné à un capteur thermosolaire
CN102937304A (zh) * 2012-11-28 2013-02-20 西南科技大学 一种利用太阳能的热管采暖系统
CN103307782A (zh) * 2013-06-25 2013-09-18 江苏启能新能源材料有限公司 一种带过热保护装置的相变储热太阳能热水器
CN203413847U (zh) * 2013-06-25 2014-01-29 江苏启能新能源材料有限公司 一种带过热保护装置的相变储热太阳能热水器

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GB1533241A (en) * 1975-01-20 1978-11-22 Bennett C Solar panels
JPS58156160A (ja) * 1982-03-12 1983-09-17 Hitachi Chem Co Ltd 太陽熱集熱器の空焚防止装置
CN202083131U (zh) * 2011-04-27 2011-12-21 毛爱英 内置缓冲器式太阳能平板集热器
CN202648208U (zh) * 2012-02-20 2013-01-02 江苏启能新能源材料有限公司 一种带安全保护的换热装置
CN102840700A (zh) * 2012-08-23 2012-12-26 江苏启能新能源材料有限公司 一种太阳能集热器空晒过热保护装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270521A (en) * 1979-08-15 1981-06-02 Brekke Carroll Ellerd Solar heating system
JPS58150752A (ja) * 1982-03-02 1983-09-07 Hitachi Chem Co Ltd 環状熱サイフオン
CN101846399A (zh) * 2009-03-27 2010-09-29 上海锦立新能源科技有限公司 带过热保护装置的太阳能相变蓄热热水器
WO2012110916A2 (fr) * 2011-02-15 2012-08-23 Tigi Ltd. Mécanisme de protection contre la surchauffe destiné à un capteur thermosolaire
CN102937304A (zh) * 2012-11-28 2013-02-20 西南科技大学 一种利用太阳能的热管采暖系统
CN103307782A (zh) * 2013-06-25 2013-09-18 江苏启能新能源材料有限公司 一种带过热保护装置的相变储热太阳能热水器
CN203413847U (zh) * 2013-06-25 2014-01-29 江苏启能新能源材料有限公司 一种带过热保护装置的相变储热太阳能热水器

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