Composition for heat cycle system, and heat cycle system

Patent metadata

Field	Value
Publication number	US-11680195-B2
Application number	US-202217860748-A
Country	US
Kind code	B2
Filing date	Jul 8, 2022
Priority date	Oct 1, 2018
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

To provide a composition for a hat cycle system which comprises a working fluid containing 1,1,2-trifluoroethylene, having cycle performance sufficient as an alternative to R410A while suppressing influence over global warming, and a heat cycle system employing the composition.
A composition for a heat cycle system, which comprises a working fluid for heat cycle containing 1,1,2-trifluoroethylene, CF 3 I and at least one compound selected from a hydrofluorocarbon, a hydrofluoroolefin other than 1,1,2-trifluoroethylene and a hydrocarbon, and having a temperature glide of at most 7° C., and a heat cycle system employing the composition for a heat cycle system.

First claim

What is claimed is:

1. A composition for a heat cycle system, comprising
a working fluid for heat cycle containing 1,1,2-trifluoroethylene, CF 3 I and at least one compound selected from the group consisting of a hydrofluorocarbon, a hydrofluoroolefin other than 1,1,2-trifluoroethylene and a hydrocarbon, and having a temperature glide of at most 7° C.,
wherein a total content of the 1,1,2-trifluoroethylene and the CF 3 I is 80 mass % or less relative to a total content of the working fluid,
the hydrofluorocarbon is at least one compound selected from the group consisting of fluoroethane, difluoroethane, trifluoroethane, tetrafluoroethane, pentafluoropropane, hexafluoropropane, heptafluoropropane, pentafluorobutane and heptafluorocyclopentane, and
the hydrofluoroolefin is at least one compound selected from the group consisting of 1,1 difluoroethylene, trans-1,2-difluoroethylene, cis-1,2-difluoroethylene, 2-fluoropropene, 1,2-trifluoropropene, trans-1,2,3,3,3-pentafluoropropene, cis-1,2,3,3,3-pentafluoropropene, trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropene.

2. The composition for a heat cycle system according to claim 1 , wherein the hydrofluorocarbon is difluoroethane.

3. The composition for a heat cycle system according to claim 1 , wherein the hydrofluorocarbon is 1,1,1,2-tetrafluoroethane.

4. The composition for a heat cycle system according to claim 1 , wherein the hydrofluorocarbon is fluoroethane.

5. The composition for a heat cycle system according to claim 1 , wherein the hydrocarbon is propane.

6. The composition for a heat cycle system according to claim 1 , wherein a content of the hydrofluorocarbon is from 10 to 30 mass %.

7. The composition for a heat cycle system according to claim 1 , which is incombustible.

8. A heat cycle system, which employs the composition for a heat cycle system according to claim 1 .

9. The heat cycle system according to claim 8 , which is a refrigerating apparatus, an air-conditioning apparatus, a power generation system, a heat transport apparatus or a secondary cooling machine.

10. The composition for a heat cycle system according to claim 1 , which comprises the hydrofluorocarbon.

11. The composition for a heat cycle system according to claim 1 , which is free of difluoromethane.

Assignees

• Agc Inc

Inventors

• Fukushima Masato
• Hayamizu Hiroki

Classifications

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• C09K2205/122

  Halogenated hydrocarbons · CPC title

• C09K5/044 Primary

  comprising halogenated compounds · CPC title

• C09K5/048

  Boiling liquids as heat transfer materials · CPC title

• F25B27/00

  Machines, plants or systems, using particular sources of energy (F25B30/06 takes precedence) · CPC title