Environmental protection type refrigerant

Abstract

The invention discloses a novel environment-friendly refrigerant, which is formed by a first component, difluoromethane, penta-fluoroethane and hydrocarbon component, wherein the first component is one of fluoroethane and 1, 1-difluoroethane, hydrocarbon component is the combination of one or more than one of isobutene, normal butene, propane and propylene. The refrigerant whose ODP is zero, which does not damage atmospheric ozone layer, and largely reduces GWP value compared with HCFC-22 and current substitutes R407 C and R410A, and has excellent environment-friendly property. The refrigerant whose thermal property is equivalent to HCFC-22 can be directly used in a system which originally uses HCFC-22, can reduce charge amount and increase energy effect ratio, and has the advantages of saving resources and energy. The refrigerant can be used as long-term substitute of HCFC-22, which provides a reliable technology which is easy to be popularized and applied and can take effect rapidlyfor the global to cope with climate warming.

Description

technical field [0001] The present invention relates to a refrigerant, in particular to an environment-friendly refrigerant that can directly replace HCFC-22 in refrigeration, air conditioners, heat pumps and other equipment with basically unchanged system, zero atmospheric ozone destruction potential and low greenhouse effect. The global response to climate warming provides a reliable technology that is easy to popularize and apply, and has quick results. technical background [0002] HCFC-22 has become the most widely used refrigerant with the best comprehensive performance in the refrigeration and air-conditioning industry at home and abroad due to its excellent physical, chemical and thermodynamic properties as well as good use safety and economy. However, HCFC-22 has a relatively high GWP (Global Warming Potential) value and ODP (Ozone Depletion Potential) value are not friendly to the environment and are required to be phased out within a time...

AI Technical Summary

Problems solved by technology

[0005] 1) Invention patents with publication numbers CN1055300C and CN1244663C use a ternary mixture of HFC-32, HFC-125 and HFC-152a as a substitute for HCFC-22, and have similar thermal properties to HCFC-22, but have not solved the problem in Under long-term operation, the compatibility of the alternative working fluid with the HCFC-22 compressor and lubricating oil

[0006] 2) The patent of invention with publication number CN1412266A uses a mixture of HFC-32, HFC-134a and HFC-143a to replace HCFC-22; the patent with publication number CN1136065A uses a mixture of HFC-32, HFC-125 and HFC-227ea to replace HCFC-22; CN1189525A uses a mixture of HFC-32, HFC-134a and HFC-227ea to replace HCFC-22, but there is a problem of high GWP value

[0007] 3) The invention patent of publication number CN1173525A uses a mixture of HC-290, HC-600a and TS flame retardant to replace HCFC-22; the invention patent of publication number CN1255502C uses a mixture of HC-1270, FC-13I1 and HC-170 Instead of HCFC-22, this type of mixture mainly uses hydrocarbons and their compositions, which has hidden dangers of haze effect and may cause new environmental problems

[0008] 4) The invention patent with publication number CN1189525A also uses a mixture of HFC-32, HFC-134a, HFC-152a and FC-13I1 to replace HCFC-22; the invention patent with publication number CN1255502C uses FC-13I1, HFC-134a and CO2 The mixture of HCFC-22 is replaced by the mixture of FC-13I1, which has good environmental performance and thermal performance, but because iodine (I) cannot be synthesized artificially, FC-13I1 is expensive and the cost of use is extremely high, which is not conducive to widely used

[0009] 5) The invention patent with publication number CN1780892A uses a mixture of HFC-161, HFC-32 and HFC-125 to replace HCFC-22, but this substitute cannot use HCFC-22 compressors and lubricating oil, and must use R407C or R410A Compressors and ester oils have high replacement costs and are not suitable for direct replacement in HCFC-22 systems

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