Refrigerant composition with low GWP (Global Warming Potential) value
A refrigerant and composition technology, applied in the field of refrigerant composition to replace HFC-134a, can solve the problems of exacerbating global warming, increasing manufacturing costs, and high GWP, and achieve excellent cycle performance
Inactive Publication Date: 2010-10-20
JIMEI UNIV
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Problems solved by technology
However, these refrigerants have their own advantages and disadvantages, and they are still not very ideal.
Among them, the heat transfer performance of R407C is poor, and the volume cooling capacity and COP value under the same working conditions are smaller than HCFC-22. In order to achieve the same cooling capacity as HCFC-22, it is necessary to strengthen the heat transfer effect of the heat exchanger, and the manufacturing cost will increase
The volumetric cooling capacity of R410A is much larger than that of HCFC-22, but its evaporation pressure and condensation pressure are also much higher than that of HCFC-22. roads and systems, and both of these two mixed refrigerants have high GWP values, a large amount of emissions will aggravate global warming
HFC-134a has excellent thermodynamic properties and good safety in use, and has become a widely used refrigerant in the refrigeration and air-conditioning industry at home and abroad. Its ODP is zero, but its GWP is still high, and a large amount of use will also cause global warming.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0019] Example 1: 50% of HFO-1234yf, 20% of HFC-152a, and 30% of DME were used as refrigerant after physical mixing at room temperature.
Embodiment 2
[0020] Example 2: 50% of HFO-1234yf, 30% of HFC-152a, and 20% of DME were used as refrigerant after physical mixing at room temperature.
Embodiment 3
[0021] Example 3: 50% of HFO-1234yf, 25% of HFC-152a, and 25% of DME were physically mixed at room temperature as a refrigerant.
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Abstract
The invention discloses a refrigerant composition with a low GWP value. The composition consists of 2,3,3,3-tetrafluoropropene(HFO-1234yf), 1,1-difluoroethane (HFC-152a) and dimethyl ether (DME). The preparation method comprises the step of physically mixing the above components at normal temperature in corresponding proportion. The refrigerant composition has zero Ozone-Depletion Potential (ODP), and very low global warming potential (GWP), meets the requirement of environmental protection, has physical property equivalent to HFC-134a, and can be directly used in the traditional HFC-134a system without redesigning a compressor.
Description
technical field [0001] The invention relates to a refrigerant composition with a low GWP value, in particular to a refrigerant composition used to replace HFC-134a in existing refrigeration, air-conditioning or heat pump equipment using HFC-134a. Background technique [0002] Freons represented by HCFC-22, CFC-12, and CFC-11 have excellent thermodynamic cycle performance and are widely used in refrigeration, air conditioning and other industries. However, such substances have high ozone depletion potential (ODP), stay in the atmosphere for a long time, and have high global warming potential (GWP). They are one of the main chemical substances that destroy the atmospheric ozone layer and produce the greenhouse effect. After the ozone layer is destroyed, harmful ultraviolet radiation will directly reach the surface of the earth, causing serious damage to crops and phytoplankton in the ocean, and will also affect the human immune system, increasing the incidence of skin cancer a...
Claims
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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 陈武刘世杰
Owner JIMEI UNIV
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