Abstract: A refrigerant consisting or consisting essentially of: a) a nonflammable high volatility component consisting of carbon dioxide, and b) a nonflammable low volatility component selected from the group consisting of: HFO1224yd(Z), HFO1224yd(E), HFO1233zd(E), HFO1233zd(Z), HFO1233xf, HFO1336mzz(E), HFO1336mzz(Z), 2-bromo-3,3,3-trifluoroprop-1-ene and mixtures thereof; c) an intermediate volatility component selected from the group consisting of: HFO1234yf, HFO1234ze(E), HFO1225ye(Z), HFO1243zf and mixtures thereof; and d) optionally a component selected from the group consisting of HFC227ea, HFC152a, HFC32 and mixtures thereof.

Abstract: Non-ozone depleting and non-flammable refrigerant compositions with GWPs less than 1050 which may replace HFC404A, HFC507 and HFC410A in refrigeration and air-conditioning systems.

Abstract: A refrigerant consisting or consisting essentially of: a) a nonflammable high volatility component consisting of carbon dioxide, and b) a nonflammable low volatility component selected from the group consisting of: HFO1224yd(Z), HFO1224yd(E), HFO1233zd(E), HFO1233zd(Z), HFO1233xf, HFO1336mzz(E), HFO1336mzz(Z), 2-bromo-3,3,3-trifluoroprop-1-ene and mixtures thereof; c) an intermediate volatility component selected from the group consisting of: HFO1234yf, HFO1234ze(E), HFO1225ye(Z), HFO1243zf and mixtures thereof; and d) optionally a component selected from the group consisting of HFC227ea, HFC152a, HFC32 and mixtures thereof.

Abstract: A refrigerant composition consists essentially of: carbon dioxide 10-35%; an HFO selected from the group consisting of: R1234yf, R1234ze(E) and mixtures thereof 45-85%; and R227ea 3-15% wherein the percentages are by mass and are selected from the ranges quoted to total 100%.

Abstract: Non-ozone depleting and non-flammable refrigerant compositions with GWPs less than 1050 which may replace HFC404A, HFC507 and HFC410A in refrigeration and air-conditioning systems.

Abstract: Non ozone depleting and non flammable refrigerant compositions with GWPs between 1,000 and 1600 ITH which may replace R404A and R507 in refrigeration systems.

Abstract: Non ozone depleting and non flammable refrigerant compositions with GWPs between 1,000 and 1600 ITH which may replace R404A and R507 in refrigeration systems.

Abstract: A refrigerant composition consisting essentially of a hydrofluorocarbon component consisting of: R227ea 3-9% R134a 25-70% R125 3-35% R32 10-35% together with an optional hydrocarbon component, wherein the amounts are by weight and are selected to total 100%, can be used as a replacement for refrigerant R22 in existing equipment.

Abstract: A refrigerant composition consisting essentially of a hydrofluorocarbon component consisting of: R227ea ?3-9% R134a 25-70% R125 ?3-35% R32 10-35% together with an optional hydrocarbon component, wherein the amounts are by weight and are selected to total 100%, can be used as a replacement for refrigerant R22 in existing equipment.

Abstract: A refrigerant composition consisting essentially of R227ea 3-9% R134a 25-70% R125 3-35% R32 10-35% together with an optional hydrocarbon component; wherein the amounts are by weight and are selected to total 100%.

Abstract: A refrigerant composition consisting essentially of R227ea 3-9% R134a 25-70% R125 3-35% R32 10-35% together with an optional hydrocarbon component; wherein the amounts are by weight and are selected to total 100%.

Abstract: A refrigerant composition consists essentially of three hydrofluorocarbon components selected from HFC134a, HFC125 and HFC143a and an additive selected from a saturated or unsaturated hydrocarbon or mixture thereof boiling in the range ?50° C. and +40° C.

Abstract: Non ozone depleting and non flammable refrigerant compositions with GWPs less than 2,000 ITH which replace R404A, R507, HCFC22 and CFC502 in refrigeration systems.

Abstract: A refrigerant composition consists essentially of three hydrofluorocarbon components selected from HFC134a, HFC125 and HFC143a and an additive selected from a saturated or unsaturated hydrocarbon or mixture thereof boiling in the range ?50° C. and +40° C.

Abstract: A refrigerant composition consists essentially of a combination of two hydro fluorocarbon components selected from R125 and R143a and an additive selected from a saturated or unsaturated hydrocarbon or mixture thereof boiling in the range ?50° C. and +40° C.

Abstract: A refrigerant composition consists essentially of three hydrofluorocarbon components selected from HFC134a, HFC125 and HFC143a and an additive selected from a saturated or unsaturated hydrocarbon or mixture thereof boiling in the range ?50° C. and +40° C.

Abstract: Non ozone depleting and non flammable refrigerant compositions with GWPs less than 2,000 ITH which replace R404A, R507, HCFC22 and CFC502 in refrigeration systems.

Abstract: A refrigerant composition consists essentially of three hydrofluorocarbon components selected from HFC134a, HFC125 and HFC143a and an additive selected from a saturated or unsaturated hydrocarbon or mixture thereof boiling in the range ?50° C. and +40° C.

Abstract: A refrigerant composition consists essentially of three hydrofluorocarbon components selected from HFC134a, HFC125 and HFC143a and an additive selected from a saturated or unsaturated hydrocarbon or mixture thereof boiling in the range ?50° C. and +40° C.

Abstract: A heating or cooling device comprising a closed circuit wherein a fluid is continuously or intermittently circulated in one direction by a pump, the system including a body of macroporous, microporous or mesoporous solid through which the fluid circulates to create a temperature gradient.