A working fluid for a heat cycle containing at least 90 mass % of 1,1,2,2- tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347) and a C1-4 alcohol is provided. A Rankine cycle system, a heat pump cycle system and a refrigeration cycle system using the working fluid for a heat cycle of the present i
A working fluid for a heat cycle containing at least 90 mass % of 1,1,2,2- tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347) and a C1-4 alcohol is provided. A Rankine cycle system, a heat pump cycle system and a refrigeration cycle system using the working fluid for a heat cycle of the present invention is also provided.
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What is claimed is: 1. A working fluid for a heat cycle, comprising: 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347); and at least one C1-4 alcohol; wherein the mass % of the 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether is at least 90%, and the mass % of the C1-4 alcohol is in
What is claimed is: 1. A working fluid for a heat cycle, comprising: 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347); and at least one C1-4 alcohol; wherein the mass % of the 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether is at least 90%, and the mass % of the C1-4 alcohol is in the range of from greater than 0 to 10%. 2. The working fluid for a heat cycle according to claim 1, wherein the at least one C1-4 alcohol is selected from the group consisting of methanol, ethanol and isopropanol. 3. The working fluid for a heat cycle according to claim 1, which further comprises a stabilizer and the concentration of the stabilizer is from greater than 0 to at most 5 mass %. 4. The working fluid for a heat cycle according to claim 3, wherein the stabilizer is at least one member selected from the group consisting of an oxidation resistance improving agent, a heat resistance improving agent and a metal deactivator. 5. A Rankine cycle system comprising the working fluid for a heat cycle as defined in claim 1. 6. A heat pump cycle system comprising the working fluid for a heat cycle as defined in claim 1. 7. A refrigeration cycle system comprising the working fluid for a heat cycle as defined in claim 1. 8. A working fluid for a heat cycle, consisting of: at least 90 mass % 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347); and from greater than 0 to 10 mass % of at least one C1-4 alcohol. 9. The working fluid according to claim 8, wherein the C1-4 alcohol is at least one selected from the group consisting of methanol, ethanol and isopropanol. 10. A working fluid for a heat cycle, consisting of: at least 90 mass % 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347); from greater than 0 to 10 mass % of at least one C1-4 alcohol; and at most 5 mass % of at least one stabilizer selected from the group consisting of an oxidation resistance improving agent, a heat resistance improving agent and a metal deactivator. 11. The working fluid according to claim 10, wherein the C1-4 alcohol is at least one selected from the group consisting of methanol, ethanol and isopropanol. 12. The working fluid according to claim 10, wherein the at least one stabilizer is an oxidation resistance-improving agent or heat resistance improving agent selected from the group consisting of N,N′-diphenylphenylenediamine, p-octyldiphenylamine, p,p′-dioctyldiphenylamine, N-phenyl-1-naphthylamine, N-phenyl-2-naphtylamine, N-(p-dodecyl)phenyl-2-naphthylamine, di-1-naphthylamine, di-2-naphthylamine, N-alkylphenothiazine, 6-(t-butyl)phenol, 2,6-di-(t-butyl)phenol, 4-methyl-2,6-di-(t-butyl)phenol and 4,4′-methylenebis(2,6-di-t-butylphenol). 13. The working fluid according to claim 10, wherein the at least one stabilizer is a metal deactivator selected from the group consisting of imidazole, benzimidazole, 2-mercaptobenzothiazole, 2,5-dimethylcaptothiadiazole, salicylidine-propylenediamine, pyrazole, benzotriazole, tolutriazole, 2-methylbenzamidazole, 3,5-dimethylpyrazole, methylenebis-benzotriazole, an organic acid or an ester thereof, a primary, secondary or tertiary aliphatic amine, an amine salt of an organic or inorganic acid, a heterocyclic nitrogen-containing compound and an amine salt of an alkyl phosphate.
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이 특허에 인용된 특허 (2)
Singh, Rajiv Ratna; Wilson, David Paul; Thomas, Raymond Hilton Percival; Richard, Robert Gerard, Hydrofluorocarbon refrigerant compositions soluble in lubricating oil.
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