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1. US20140131614 - Working medium for heat cycle and heat cycle system

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[ EN ]

Claims

1. A working medium for heat cycle, comprising:
1,1-dichloro-2,3,3,3-tetrafluoropropene; and
a hydrofluorocarbon, a content of the hydrofluorocarbon being from 1 to 60 mass % in the working medium for heat cycle.
2. The working medium for heat cycle according to claim 1, further comprising a hydrocarbon.
3. The working medium for heat cycle according to claim 2, wherein the hydrocarbon is contained in a content of from 1 to 40 mass % in the working medium for heat cycle.
4. The working medium for heat cycle according to claim 2, wherein the hydrocarbon is propane, butane or isobutane.
5. The working medium for heat cycle according to claim 1, wherein 1,1-dichloro-2,3,3,3-tetrafluoropropene is contained in a content of at least 60 mass % in the working medium for heat cycle.
6. The working medium for heat cycle according to claim 1, wherein the hydrofluorocarbon is at least one of difluoromethane, 1,1-difluoroethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane or pentafluoroethane.
7. The working medium for heat cycle according to claim 1, wherein the hydrofluorocarbon is at least one of difluoromethane, difluoroethane, trifluoroethane, tetrafluoroethane, pentafluoroethane, pentafluoropropane, hexafluoropropane, heptafluoropropane, pentafluorobutane or heptafluorocyclopentane.
8. A heat apparatus comprising:
a working medium which comprises:
1,1-dichloro-2,3,3,3-tetrafluoropropene; and
a hydrofluorocarbon, a content of the hydrofluorocarbon being from 1 to 60 mass % in the working medium.
9. The heat apparatus according to claim 8, further comprising:
an evaporator to evaporate the working medium;
a condenser to condense the working medium;
a compressor disposed between the evaporator and the condenser to compress the working medium; and
an expansion valve disposed between the condenser and the evaporator to expand the working medium.
10. The heat apparatus according to claim 8, wherein the working medium further comprises a hydrocarbon.
11. The heat apparatus according to claim 10, wherein the hydrocarbon is contained in a content of from 1 to 40 mass % in the working medium.
12. The heat apparatus according to claim 10, wherein the hydrocarbon is propane, butane or isobutane.
13. The heat apparatus according to claim 8, wherein 1,1-dichloro -2,3,3,3-tetrafluoropropene is contained in a content of at least 60 mass % in the working medium.
14. The heat apparatus according to claim 8, wherein the hydrofluorocarbon is at least one of difluoromethane, 1,1-difluoroethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane or pentafluoroethane.
15. The heat apparatus according to claim 8, wherein the hydrofluorocarbon is at least one of difluoromethane, difluoroethane, trifluoroethane, tetrafluoroethane, pentafluoroethane, pentafluoropropane, hexafluoropropane, heptafluoropropane, pentafluorobutane or heptafluorocyclopentane.