Composition for heat cycle system, and heat cycle system

Patent metadata

Field	Value
Publication number	US-10351746-B2
Application number	US-201615235994-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Feb 20, 2014
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

To provide a composition for a heat cycle system which comprises a working fluid containing HFO-1123 and having cycle performance sufficient as an alternative to R410A while the influence over global warming is suppressed, and a heat cycle system employing the composition.
A composition for a heat cycle system, which comprises a working fluid for heat cycle containing trifluoroethylene and having a global warming potential (100 years) in Intergovernmental Panel on Climate Change (IPCC), Fourth assessment report, of less than 675, 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:
trifluoroethylene (HFO 1123);
difluoromethane; and
1,3,3,3-tetrafluoropropene (HFO 1234ze);
wherein a total amount of HFO-1123 and HFO 1234ze based on the entire amount of the composition is at least 70 mass %, and
wherein a global warming potential of the composition according to the (100 years) Intergovernmental Panel on Climate Change (IPCC), Fourth assessment report, is less than 675.

2. The composition for a heat cycle system according to claim 1 , wherein of the working fluid for heat cycle, the relative coefficient of performance (RCOP R410A ) calculated in accordance with the following formula (1) is from 0.85 to 1.20:

Relative
⁢

⁢
performance
⁢

⁢
of

coefficient
⁢

⁢

(

RCOP

R
⁢

⁢
410
⁢

⁢
A

)

-

Coefficient
⁢

⁢
of
⁢

⁢
performance

of
⁢

⁢
sample
⁢

⁢

(

COP
sample

)

Coefficient
⁢

⁢
of
⁢

⁢
performance

of
⁢

⁢
R
⁢

⁢
410
⁢

⁢
A
⁢

⁢

(

COP

R
⁢

⁢
410
⁢

⁢
A

)

(
1
)

wherein R410A is a mixture of difluoromethane and pentafluoroethane in a mass ratio of 1:1, and the sample is the working fluid to be subjected to relative evaluation; and the coefficient of performance of each of the sample and R410A is a value obtained by dividing the obtained output (kW) by the required power consumption (kW) when each of the sample and R410A is applied to a standard refrigerating cycle under conditions such that the evaporation temperature is −15° C. (in the case of a non-azeotropic mixture, the average temperature of the evaporation initiation temperature and the evaporation completion temperature), the condensing temperature is 30° C. (in the case of a non-azeotropic mixture, the average temperature of the condensation initiation temperature and the condensation completion temperature), the supercooling degree (SC) is 5° C., and the degree of superheat (SH) is 0° C.

3. The composition for a heat cycle system according to claim 1 , wherein of the working fluid

Assignees

• Agc Inc

Inventors

• Fukushima Masato

Classifications

• F25B2400/12

  Inflammable refrigerants · CPC title

• F25B1/00

  Compression machines, plants or systems with non-reversible cycle (F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence) · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• C09K2205/122

  Halogenated hydrocarbons · CPC title

• C09K5/045 Primary

  containing only fluorine as halogen · CPC title