Heat pump mixed working medium and application thereof
A mixed working medium and heat pump technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of poor high-temperature heating performance and inability to meet the temperature requirements of heating hot water, etc., and achieve extended life and suction specific volume Small, GWP reduction effect
Active Publication Date: 2019-06-18
ZHEJIANG UNIV +1
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Problems solved by technology
In its embodiment, the maximum temperature on the condensing side only reaches 110 degrees Fahrenheit (about 43.3 degrees C), which cannot meet the heating and hot water temperature requirements in northern reg
Method used
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Embodiment 1
[0034] Physically mix cis-1,3,3,3-tetrafluoropropene and carbon dioxide in a liquid phase at a mass percentage of 55:45 to obtain a heat pump mixed working fluid.
Embodiment 2
[0036] Physically mix cis-1,3,3,3-tetrafluoropropene and carbon dioxide in a liquid phase at a mass percentage of 45:55 to obtain a heat pump mixed working fluid.
Embodiment 3
[0038] Physically mix cis-1,3,3,3-tetrafluoropropene and carbon dioxide in a liquid phase at a mass percentage of 35:65 to obtain a heat pump mixed working fluid.
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The invention discloses a heat pump mixed working medium. The heat pump mixed working medium comprises, by mass, 30-55% of a halogenated olefin and 45-70% of carbon dioxide, and the standard boiling point of the halogenated olefin is -21 DEG C or above. The invention also discloses an application of the heat pump mixed working medium. The heat pump mixed working medium is applied to medium and high temperature heat pumps with a heating temperature of 55 DEG C or above. The heat pump mixed working medium provided by the invention does not damage the atmospheric ozone layer, produces a small greenhouse effect, is very suitable for heating in cold regions, and has better thermal parameters and thermal performances than R134a.
Description
technical field [0001] The invention relates to a medium-high temperature heat pump working medium, in particular to a heat pump mixed working medium and its application. Background technique [0002] According to the data of "China Building Energy Consumption Research Report (2017)", my country's building energy consumption accounted for 20% of the country's total energy consumption in 2015. In building energy consumption, heating energy consumption in winter in northern China accounts for about 40%. The data shows that the per capita building energy consumption in urban heating areas in northern my country is 1.2 tons of standard coal, almost twice that in non-heating areas. This shows that in building energy consumption, heating energy consumption in winter undoubtedly occupies a considerable proportion. [0003] Since heating energy consumption accounts for a considerable proportion of my country's building energy consumption and even total energy consumption, and my co...
Claims
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Inventor 王勤罗介霖陈福胜张靖鹏陈光明杨定宇
Owner ZHEJIANG UNIV
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