Abstract:
PURPOSE: A mixture coolant composition is provided, which can replace chlorodifluoromethane(CHClF2, referred as HCFC-22), does not destroy an ozone layer and is used in a refrigerator and an air conditioner for a car. CONSTITUTION: The mixture coolant composition comprises 50-60 wt% of difluoromethane(HFC-32); 10-30 wt% of 1,1,1,2-tetrafluoroethane(HFC-134a); 10-20 wt% of 1,1,1,2,3,3,3,-heptafluoropropane(HFC-227ea); and 5-15 wt% of isobutane(R-600a). The mixture coolant composition comprises 50-70 wt% of HFC-32; 10-30 wt% of HFC-134a; 10-20 wt% of HFC-227ea; and 5-15 wt% of 1,1,1,2,3,3-hexafluoropropane(HFC-2363a). The mixture coolant composition comprises 50-70 wt% of HFC-32; 10-30 wt% of HFC-134a; 10-20 wt% of HFC-227ea; and 5-12 wt% of butane(R-600). Also the mixture coolant composition comprises 40-70 wt% of HFC-32; 10-40 wt% of 1,1-difluoroethane(HFC-152a); 10-20 wt% of HFC-227ea; and 5-15 wt% of one selected from the group consisting of R-600a. The mixture coolant composition comprises 50-70 wt% of HFC-32; 10-40 wt% of HFC-152a; 10-20 wt% of HFC-227ea; and 5-15 wt% of HFC-2363a. The mixture coolant composition comprises 40-70 wt% of HFC-32; 10-40 wt% of HFC-152a; 10-20 wt% of HFC-227ea; and 5-12 wt% of R-600.
Abstract:
PURPOSE: Provided is a coolant composition containing difluoromethane, 1,1,1-trifluoroethane, and 1,1-difluoroethane, which is substituted for chlorodifluoromethane(CHClF2, HCFC-22) and dose not contain the material destroying an ozone layer. CONSTITUTION: The coolant composition comprises 20-70wt% of the difluoromethane(CH2F2, HFC-32), 10-50wt% of the 1,1,1-trifluoroethane(CH3CF3, HFC-143a), 10-40wt% of the 1,1-difluoroethane(CH3CHF2, HFC-152a), and 10-30wt% of 1,1,1,2,3,3,3-heptafluoropropane(CF3CHFCF3, HFC-227ea) or 5-15wt% of isobutane(CH(CH3)2CH3, R-600a). Or the coolant composition comprises 30-70wt% of the difluoromethane(CH2F2, HFC-32), 10-40wt% of the 1,1,1-trifluoroethane(CH3CF3, HFC-143a), 10-40wt% of the 1,1-difluoroethane(CH3CHF2, HFC-152a), and 10-20wt% of 1,1,1,2,3,3-hexafluoropropane(CHF2CHFCF3, HFC-236ea).
Abstract:
PURPOSE: Provided is a mixed coolant composition having new composition, which can show similar ability to that of the existing HCFC-22, and does not have the danger such as destruction of the ozone layer. CONSTITUTION: The mixed coolant composition for low temperature freezers, containing a mixture of fluorinated hydrocarbons, comprises a mixture containing 40-70 wt% of difluoromethane(HFC-32), 10-40 wt% of 1,1-difluoroethane(HFC-152a), and 10-20 wt% of 1,1,1,2,3,3,3-heptafluoropropane(HFC-227ea); and 5-15 wt% of isobutane(R-600a). Also, the mixed coolant composition comprises a mixture containing 50-70 wt% of difluoromethane(HFC-32), 10-30 wt% of 1,1-difluoroethane(HFC-152a), and 10-20 wt% of 1,1,1,2,3,3,3-heptafluoropropane(HFC-227ea); and 5-15 wt% of 1,1,1,2,3,3-hexafluoropropane(HFC-236ea).
Abstract:
PURPOSE: Provided is a coolant composition containing difluoromethane, 1,1,1-trifluoroethane, and 1,1-difluoroethane, which is substituted for chlorodifluoromethane(CHClF2, HCFC-22) and dose not contain the material destroying an ozone layer. CONSTITUTION: The coolant composition comprises 20-70wt% of the difluoromethane(CH2F2, HFC-32), 10-50wt% of the 1,1,1-trifluoroethane(CH3CF3, HFC-143a), 10-40wt% of the 1,1-difluoroethane(CH3CHF2, HFC-152a), and 10-30wt% of 1,1,1,2,3,3,3-heptafluoropropane(CF3CHFCF3, HFC-227ea) or 5-15wt% of isobutane(CH(CH3)2CH3, R-600a). Or the coolant composition comprises 30-70wt% of the difluoromethane(CH2F2, HFC-32), 10-40wt% of the 1,1,1-trifluoroethane(CH3CF3, HFC-143a), 10-40wt% of the 1,1-difluoroethane(CH3CHF2, HFC-152a), and 10-20wt% of 1,1,1,2,3,3-hexafluoropropane(CHF2CHFCF3, HFC-236ea).
Abstract:
PURPOSE: Provided is a coolant composition containing difluoromethane, 1,1,1-trifluoroethane, and 1,1,1,2-tetrafluoroethane, which is a substitute for chlorodifluoromethane(CHClF2, HCFC-22) and dose not contain the material destroying an ozone layer. CONSTITUTION: The coolant composition comprises: the difluoromethane(CH2F2, HFC-32); the 1,1,1-trifluoroethane(CH3CF3, HFC-143a); the 1,1,1,2-tetrafluoroethane(CH2FCF3, HFC-134a); a compound selected from the group consisting of 1,1-difluoroethane(CH3CHF2, HFC-152a), 1,1,1,2,3,3,3-heptafluoropropane(CF3CHFCF3, HFC-227ea), 1,1,1,2,3,3-hexafluoropropane(CHF2CHFCF3, HFC-236ea), and butane(C4H10, R-600). The composition of HFC-32, HFC-143a, HFC-134a, and HFC-152a is 20-70wt%, 10-50wt%, 10-50wt%, and 10-40wt%.
Abstract:
PURPOSE: Provided is a coolant composition containing difluoromethane, 1,1,1-trifluoroethane, and 1,1,1,2-tetrafluoroethane, which is a substitute for chlorodifluoromethane(CHClF2, HCFC-22) and dose not contain the material destroying an ozone layer. CONSTITUTION: The coolant composition comprises: the difluoromethane(CH2F2, HFC-32); the 1,1,1-trifluoroethane(CH3CF3, HFC-143a); the 1,1,1,2-tetrafluoroethane(CH2FCF3, HFC-134a); a compound selected from the group consisting of 1,1-difluoroethane(CH3CHF2, HFC-152a), 1,1,1,2,3,3,3-heptafluoropropane(CF3CHFCF3, HFC-227ea), 1,1,1,2,3,3-hexafluoropropane(CHF2CHFCF3, HFC-236ea), and butane(C4H10, R-600). The composition of HFC-32, HFC-143a, HFC-134a, and HFC-152a is 20-70wt%, 10-50wt%, 10-50wt%, and 10-40wt%.
Abstract:
The present invention relates to a refrigerant composition of four-constituent system, comprising: (a) a first constituent of difluoromethane, (b) a second constituent of 1,1,1,2,3,3,3-heptafluoropropane, (c) a third constituent selected from the group consisting of 1,1,1,2-tetrafluoroethane and 1,1-difluoroethane and (d) a for the constituent selected from the group consisting of isobutane, 1,1,1,2,3,3,-hexafluoropropane and butane, useful as a substitute for chlorodifluoromethane (HCFC-22).
Abstract:
PURPOSE: Provided is a mixed coolant composition having new composition, which can show similar ability to that of the existing HCFC-22, and does not have the danger such as destruction of the ozone layer. CONSTITUTION: The mixed coolant composition for low temperature freezers, containing a mixture of fluorinated hydrocarbons, comprises a mixture containing 40-70 wt% of difluoromethane(HFC-32), 10-40 wt% of 1,1-difluoroethane(HFC-152a), and 10-20 wt% of 1,1,1,2,3,3,3-heptafluoropropane(HFC-227ea); and 5-15 wt% of isobutane(R-600a). Also, the mixed coolant composition comprises a mixture containing 50-70 wt% of difluoromethane(HFC-32), 10-30 wt% of 1,1-difluoroethane(HFC-152a), and 10-20 wt% of 1,1,1,2,3,3,3-heptafluoropropane(HFC-227ea); and 5-15 wt% of 1,1,1,2,3,3-hexafluoropropane(HFC-236ea).
Abstract:
PURPOSE: Provided is a coolant composition substituted for chlorodifluoromethane(CHClF2, HCFC-22), which dose not contain the material destroying an ozone layer. CONSTITUTION: The coolant composition comprises: difluoromethane(CH2F2, HFC-32); 1,1,1-trifluoroethane(CH3CF3, HFC-143a); 1,1,1,2,3,3,3-heptafluoropropane(CF3CHFCF3, HFC-227ea); a compound selected from the group consisting of isobutane(CH(CH3)2CH3, R-600a), 1,1,1,2,3,3-hexafluoropropane(CHF2CHFCF3, HFC-236ea), and butane(C4H10, R-600). The composition of HFC-32, HFC-143a, HFC-227ea, and R-600a is 40-55wt%, 20-40wt%, 10-20wt%, and 5-15wt%. And the composition of HFC-32, HFC-143a, HFC-227ea, and HFC-236ea is 40-70wt%, 10-40wt%, 10-20wt%, and 5-15wt%.