Composition for heat cycle system, and heat cycle system

Patent metadata

Field	Value
Publication number	US-11447673-B2
Application number	US-202117218362-A
Country	US
Kind code	B2
Filing date	Mar 31, 2021
Priority date	Oct 1, 2018
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

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, CF3I 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 2,3,3,3-tetrafluoropropene,
wherein the working fluid has and having a temperature glide of at most 7° C.,
a content of the 2,3,3,3-tetrafluoropropene is 50 mass % or more relative to a total content of the 1,1,2-trifluoroethylene, the CF 3 I, and the 2,3,3,3-tetrafluoropropene,
a content of the 1,1,2-trifluoroethylene is 20 mass % or more relative to a total content of the working fluid, and
a total content of the 1,1,2-trifluoroethylene and the CF 3 I is 50 mass % or less relative to the total content of the working fluid.

2. The composition for a heat cycle system according to claim 1 , wherein the working fluid further contains a hydrofluorocarbon selected from the group consisting of difluoromethane, pentafluoroethane, 1,1,1,2-tetrafluoroethane and fluoroethane.

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

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

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

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

7. The composition for a heat cycle system according to claim 1 , wherein the working fluid further contains a hydrofluoroolefin selected from the group consisting of trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene, trans-1,2-difluoroethylene and cis-1,2-difluoroethylene.

8. The composition for a heat cycle system according to claim 1 , wherein the working fluid further contains propane.

9. The composition for a heat cycle system according to claim 2 , wherein the content of the hydrofluorocarbon is from 10 to 30 mass % relative to the total content of the working fluid.

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

11. A heat cycle system, comprising the composition for a heat cycle system according to claim 1 .

12. The heat cycle system according to claim 11 , which is a refrigerating apparatus, an air-conditioning apparatus, a power generation system, a heat transport apparatus or a secondary cooling machine.

Assignees

• Agc Inc

Inventors

• Fukushima Masato
• Hayamizu Hiroki

Classifications

• C09K2205/122

  Halogenated hydrocarbons · CPC title

• C09K2205/128

  Perfluorinated hydrocarbons (C09K2205/124, C09K2205/126 take precedence) · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• C09K5/045 Primary

  containing only fluorine as halogen · CPC title

• C09K5/044 Primary

  comprising halogenated compounds · CPC title