Multi-element mixed refrigerant
A mixed refrigerant and multi-component technology, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of high GWP value, and achieve the effects of convenient maintenance, low global warming potential value, and small GWP
Active Publication Date: 2019-07-05
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] At present, the widely used mixed alternative working fluids are R410A and R407C. The ODP values of both are zero, which meets the protection requirements for the ozone layer, but the GWP value is very high.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] Example 1: R1243zf with a molar percentage of 5% and R290 with a molar percentage of 95% were physically mixed at room temperature to obtain a mixed refrigerant applicable to a single-stage compression refrigeration system.
Embodiment 2
[0026] Example 2: R1243zf with a molar percentage of 10% and R290 with a molar percentage of 90% were physically mixed at room temperature to obtain a mixed refrigerant applicable to a single-stage compression refrigeration system.
Embodiment 3
[0027] Example 3: R1243zf with a molar percentage of 20% and R290 with a molar percentage of 80% were physically mixed at room temperature to obtain a mixed refrigerant applicable to a single-stage compression refrigeration system.
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The invention provides a multi-element mixed refrigerant which comprises 3,3,3-trifluoropropene and propane. The molar percentage concentration of 3,3,3-trifluoropropene is 5-85%, and the molar percentage concentration of propane is 15-95%. The multi-element mixed refrigerant is suitable for a stand-alone compressing and refrigerating system, has the ozone depletion potential (ODP) of zero, and cannot harm the atmospheric ozone layer and has quite small global warming potential (GWP) after being used for a long time. In addition, since the multi-element mixed refrigerant comprises 3,3,3-trifluoropropene and propane, for a two-element mixture, azeotropic refrigerating working substances can keep the stable evaporating working state under the boiling point, and convenience is provided for the injection of the refrigerant and the maintenance of the refrigerating system. In addition, the multi-element mixed refrigerant has a small pressure ratio, and the efficiency of a compressor can be effectively improved by reducing the pressure ratio.
Description
technical field [0001] The invention relates to the technical field of refrigerants, in particular to a multi-element mixed refrigerant. Background technique [0002] R22 (HCFC22, CHF2Cl) is a refrigerant widely used in air-conditioning systems, which has very good thermal performance and high efficiency. However, with the discovery of the ozone layer depletion mechanism and the greenhouse effect, R22 has been phased out due to its ODP (Ozone Depletion Potential) value and high GWP (Global Warming Potential) value. [0003] There are two main types of alternative working fluids for R22: one is natural working fluids, such as hydrocarbons (HCs), with zero ODP and very low GWP, but it has strong flammability itself; the other is synthetic hydrogen Fluorocarbons (HFCs) and hydrofluoroolefins (HFOs), such as R134a, R1243zf, etc., have zero ODP and are not as flammable as HCs. Some HFCs have flame retardancy, but have a high GWP and have lubricant solubility problems. It is dif...
Claims
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IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/12C09K2205/126C09K2205/24C09K2205/43
Inventor 董学强公茂琼赵延兴严晗姚晓宇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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