Composition for heat cycle system, and heat cycle system

Abstract

To provide a composition for a heat cycle system, which comprises a working fluid for heat cycle which has a low global warming potential and high stability, and which can replace R410A, 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 a stabilizer for preventing deterioration of the working fluid for heat cycle, such as an oxidation resistance-improving agent, a heat resistance-improving agent or a metal deactivator, and a heat cycle system employing the composition for a heat cycle system.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation application of U.S. patent application Ser. No. 15 / 238,117, filed on Aug. 16, 2016, which is a continuation application of international application No. PCT / JP2015 / 054646, filed on Feb. 19, 2015, which claims priority to Japanese Patent Application No. 2014-033345 filed on Feb. 24, 2014, to Japanese Patent Application No. 2014-127745 filed on Jun. 20, 2014 and to Japanese Patent Application No. 2014-148348 filed on Jul. 18, 2014. The contents of these applications are incorporated herein by reference in their entirety.TECHNICAL FIELD[0002]The present invention relates to a composition for a heat cycle system, and a heat cycle system employing the composition.BACKGROUND ART[0003]In this specification, abbreviated names of halogenated hydrocarbon compounds are described in brackets after the compound names, and in this specification, the abbreviated names are employed instead of the compound names a...

AI Technical Summary

Benefits of technology

[0014]According to the present invention, it is possible to provide a composition for a heat cycle system comprising trifluoroethylene (HFO-1123), with a more stabilized working fluid for heat cycle containing HFO-1123, while the low global warming potential and excellent cycle performance of HFO-1123 are sufficiently made use of.

[0015]The heat cycle system of the present invention is a heat cycle system which has both less influence over global warming and high cycle performance, in which the working fluid for heat cycle is stabilized, and which is efficiently operated.

Problems solved by technology

However, it is pointed out that HFCs may cause global warming.

However, HFO-1123 is a compound having an unsaturated bond in its molecule and is a compound having a very short life in the air, and accordingly under conditions under which compression and heating are repeatedly carried out in a heat cycle, it is inferior in the stability to a saturated hydrofluorocarbon or hydrochlorofluorocarbon such as a conventional HFC or HCFC.

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