Working fluid for heat cycle, composition for heat cycle system, and heat cycle system

Patent metadata

Field	Value
Publication number	US-2016347979-A1
Application number	US-201615232167-A
Country	US
Kind code	A1
Filing date	Aug 9, 2016
Priority date	Feb 28, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

To provide a working fluid for heat cycle which has a small temperature glide, a sufficiently low discharge temperature, high durability and less influence over global warming, and with which a heat cycle system excellent in the system maintenance properties and the cycle performance (capacity) is achieved, a composition for a heat cycle system, and a heat cycle system. A working fluid for heat cycle, which contains trifluoroethylene and difluoromethane, wherein the proportion of the total amount of trifluoroethylene and difluoromethane based on the entire amount of the working fluid for heat cycle is higher than 90 mass % and at most 100 mass %, and the mass ratio represented by trifluoroethylene/difluoromethane in the working fluid for heat cycle is from 41/59 to 59/41, a composition for a heat cycle system, and a heat cycle system employing the composition.

First claim

What is claimed is:

1 . A working fluid for heat cycle, which contains trifluoroethylene and difluoromethane, wherein the proportion of the total amount of trifluoroethylene and difluoromethane based on the entire amount of the working fluid for heat cycle is higher than 90 mass % and at most 100 mass %, and
the mass ratio represented by trifluoroethylene/difluoromethane in the working fluid for heat cycle is from 41/59 to 59/41.

2 . The working fluid for heat cycle according to claim 1 , wherein the mass ratio represented by trifluoroethylene/difluoromethane in the working fluid for heat cycle is from 43/57 to 59/41.

3 . The working fluid for heat cycle according to claim 1 , wherein the mass ratio represented by trifluoroethylene/difluoromethane in the working fluid for heat cycle is from 45/55 to 59/41.

4 . The working fluid for heat cycle according to claim 1 , wherein the mass ratio represented by trifluoroethylene/difluoromethane in the working fluid for heat cycle is from 45/55 to 55/45.

5 . The working fluid for heat cycle according to claim 1 , wherein the proportion of the total amount of trifluoroethylene and difluoromethane based on the entire amount of the working fluid for heat cycle is higher than 97 mass % and at most 100 mass %.

6 . The composition for a heat cycle system, which comprises the working fluid for heat cycle as defined in claim 1 and a refrigerant oil.

7 . A heat cycle system, which employs the composition for a heat cycle system as defined in claim 6 .

8 . The heat cycle system according to claim 7 , which is a refrigerating apparatus, an air-conditioning apparatus, a power generation system, a heat transport apparatus or a secondary cooling machine.

9 . The heat cycle system according to claim 7 , which is a room air-conditioner, a store package air-conditioner, a building package air-conditioner, a plant package air-conditioner, a gas engine heat pump, a train air-conditioning system, an automobile air-conditioning system, a built-in showcase, a separate showcase, an industrial fridge freezer, an ice making machine or a vending machine.

Assignees

• Asahi Glass Co Ltd

Inventors

• Okamoto Hidekazu
• Fukushima Masato
• Kawaguchi Satoshi
• Kadowaki Yoshinobu
• Otsuka Tetsuo
• Ueno Katsuya
• Kurashima Kazuyoshi

Classifications

• C09K5/045 Primary

  containing only fluorine as halogen · CPC title

• F24F1/022

  comprising a compressor cycle · CPC title

• C09K2205/122

  Halogenated hydrocarbons · CPC title

• C09K2205/22

  All components of a mixture being fluoro compounds · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title