CN105985754A - 一组低温热泵用高效环保型混合工质 - Google Patents

一组低温热泵用高效环保型混合工质 Download PDF

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Publication number
CN105985754A
CN105985754A CN201510001464.9A CN201510001464A CN105985754A CN 105985754 A CN105985754 A CN 105985754A CN 201510001464 A CN201510001464 A CN 201510001464A CN 105985754 A CN105985754 A CN 105985754A
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China
Prior art keywords
working medium
mixed working
r227ea
working fluid
heat pump
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CN201510001464.9A
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Inventor
谭军毅
马世歌
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HUNAN SINGYES SOLAR TECHNOLOGY Co Ltd
Zhuhai Singyes Renewable Energy Technology Co Ltd
Zhuhai Singyes Green Building Technology Co Ltd
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HUNAN SINGYES SOLAR TECHNOLOGY Co Ltd
Zhuhai Singyes Renewable Energy Technology Co Ltd
Zhuhai Singyes Green Building Technology Co Ltd
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Priority to CN201510001464.9A priority Critical patent/CN105985754A/zh
Priority to GB1505844.9A priority patent/GB2547178B/en
Publication of CN105985754A publication Critical patent/CN105985754A/zh
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/22—All components of a mixture being fluoro compounds

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Lubricants (AREA)

Abstract

本发明提供一组低温热泵用高效环保型混合工质，由R134a—四氟乙烷)氟乙烷（CH2FCF3）和R227ea—七氟丙烷（CF3-CHF-CF3）两种组元物质组成，混合工质中R134a与R227ea的质量分数比为85～95%：15～5%。本发明对臭氧衰减指数（ODP）值为0，对造成温室效应危害程度（GWP）值为1375，符合当前保护大气臭氧层、减少全球温室效应的环保要求新趋势。

Description

一组低温热泵用高效环保型混合工质
技术领域
本发明属于热泵或制冷、空调***中的制冷剂，尤其适合作为冷凝温度为30-100℃的低温热泵***中的制冷工质。
背景技术
R134a(四氟乙烷，CH2FCF3)相对分子质量为102.03，沸点为-26.07℃，气化潜热为216 J／g(O.101 3 MPa)，临界温度为101.06℃，临界压力为4.059 MPa，临界密度为512 kg／m3；环境性能优越：其臭氧消耗潜能值(ODP)为0，全球变暖潜能值(GWP)为1300；R134a的毒性非常低，在空气中不可燃，安全类别为A1，是很安全的制冷剂。其缺点是：R134a的化学稳定性很好，然而由于它的溶水性比R22高，所以对制冷***不利，即使有少量水分存在，在润滑油等的作用下，将会产生酸、二氧化碳或一氧化碳，将对金属产生腐蚀作用，或产生“镀铜”作用，所以R134a对***的干燥和清洁要求更高。R134a对钢、铁、铜、铝等金属未发现有相互化学反应的现象，仅对锌有轻微的作用。
R227ea(七氟丙烷，CF3-CHF-CF3)相对分子质量为170.03，沸点为-16.45℃，气化潜热较小，为136 J／g(O．101 3 MPa)，临界温度为101.65℃，临界压力为2.926 MPa，临界密度为573 g／m3，20℃时饱和蒸汽压为0.389 MPa，具有良好的热稳定性和化学稳定性，无毒不燃，无腐蚀性；环境性能优越：其ODP值为0，GWP值为2050，在大气中存留寿命短；R227ea是一种良好的阻燃剂，它的抑燃性优于R125。
目前空气源热泵技术作为供热设备行业的一个热点，各类产品层出不穷。短短几年时间，在我国空调市场上已经有数百家国内外企业加入空气源热泵产品生产销售之中。但是受工质本身制热能力的局限，空气源热泵在环境温度达到-20℃时，要达到55℃的出水温度，制冷剂冷凝温度在60℃左右，如此压缩比超过了压缩机的承受范围，导致压缩机电机关闭，整个低温热泵***停止工作。若能研发出可在-20℃下制热能力也较大的制冷剂，将推进我国空气源热泵在北方地区的发展进度。
发明内容
本发明的目的是提供一组适合低温热泵机组用的高效环保型混合工质，其对臭氧衰减指数（ODP）值为0，对造成温室效应危害程度（GWP）值为1375，符合当前保护大气臭氧层、减少全球温室效应的环保要求新趋势。
本发明内容介绍：一组低温热泵用高效环保型混合工质，含有R134a—四氟乙烷（CH2FCF3）和R227ea—七氟丙烷（CF3-CHF-CF3）两种组元物质，其特征是：混合工质中R134a与R227ea的质量分数比为85～95%：15～5%。
本发明所述混合工质的制备方法是，将各组元物质按其指定的质量配比在常温下进行物理混合即可。
本发明具有以下优点及有益效果：
（1）符合环保要求：本发明的ODP等于零，GWP值为1375。其环境特性优良，符合保护臭氧层、减少温室效应的要求。（2）热工参数适宜：在低温热泵机组中，可适应冷凝温度30-100℃，即可制取55℃热水。
各组元的基本参数见表1所示。
表1 低温热泵用高效环保型混合工质中所含组元的基本参数
附图说明
下面结合附图对本发明进一步说明：
附图1为本发明饱和状态下混合制冷剂的T-S图。
附图2、3为本发明饱和状态下混合制冷剂的各热物性参数值。
具体实施方式
下面的实施例将对本发明作进一步的说明。
实施例：取90mass%R134a—四氟乙烷（CH2FCF3）、10mass%R227ea—七氟丙烷（CF3-CHF-CF3）,在常温下进行物理混合后作为制冷剂。
本发明实施例的各热物性参数值见附图1所示。

Claims (2)

1.一组低温热泵用高效环保型混合工质，其特征是：含有R134a—四氟乙烷（CH2FCF3）和R227ea—七氟丙烷（CF3-CHF-CF3）两种组元物质。
2.按照权利要求1所述的一组低温热泵用混合工质，其特征是：混合工质中R134a与R227ea的质量分数比为85～95%：15～5% ；本组混合工质的ODP值为0，GWP值为1375，符合当前保护大气臭氧层、减少全球温室效应的环保要求新趋势。
CN201510001464.9A 2015-03-02 2015-03-02 一组低温热泵用高效环保型混合工质 Pending CN105985754A (zh)

Priority Applications (2)

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CN201510001464.9A CN105985754A (zh) 2015-03-02 2015-03-02 一组低温热泵用高效环保型混合工质
GB1505844.9A GB2547178B (en) 2015-03-02 2015-04-07 Highly efficient and environmental friendly mixed refrigerant for low temperature heat pump

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1083508A (zh) * 1992-06-25 1994-03-09 大湖化学公司 含有1，1，1，2，3，3，3，-七氟丙烷的致冷剂混合物
US5766511A (en) * 1995-12-14 1998-06-16 Ausimont S.P.A. Near-azeotropic compositions constituted by hydrogenated fluorocarbons and hydrocarbons, suitable as propellant fluids for aerosol

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1123618C (zh) * 2000-07-28 2003-10-08 清华大学 一种制冷剂
MY153687A (en) * 2006-12-23 2015-03-13 Du Pont Fluorinated compositions and systems using such compositions
US8333901B2 (en) * 2007-10-12 2012-12-18 Mexichem Amanco Holding S.A. De C.V. Heat transfer compositions
WO2009047535A2 (en) * 2007-10-12 2009-04-16 Ineos Fluor Holdings Limited Heat transfer compositions
CN102746825A (zh) * 2012-06-27 2012-10-24 西安交通大学 含有氟代乙烷的混合工质

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1083508A (zh) * 1992-06-25 1994-03-09 大湖化学公司 含有1，1，1，2，3，3，3，-七氟丙烷的致冷剂混合物
US5766511A (en) * 1995-12-14 1998-06-16 Ausimont S.P.A. Near-azeotropic compositions constituted by hydrogenated fluorocarbons and hydrocarbons, suitable as propellant fluids for aerosol

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GB2547178B (en) 2021-11-03
GB201505844D0 (en) 2015-05-20

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