Working medium and heat cycle system

Patent metadata

Field	Value
Publication number	US-10829674-B2
Application number	US-201615388197-A
Country	US
Kind code	B2
Filing date	Dec 22, 2016
Priority date	May 19, 2011
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

To provide a working medium for heat cycle, of which combustibility is suppressed, which has less influence over the ozone layer, which has less influence over global warming and which provides a heat cycle system excellent in the cycle performance (efficiency and capacity), and a heat cycle system, of which the safety is secured, and which is excellent in the cycle performance (efficiency and capacity).
A working medium for heat cycle comprising 1-chloro-2,3,3,3-tetrafluoropropene is employed for a heat cycle system (such as a Rankine cycle system, a heat pump cycle system, a refrigerating cycle system 10 or a heat transport system).

First claim

What is claimed is:

1. A working medium composition, which comprises a mineral oil; and a working medium comprising 1-chloro-2,3,3,3-tetrafluoropropene in a content of at least 60 mass % based on 100 mass % of the working medium and if the working medium comprises less than 100 mass % of the 1-chloro-2,3,3,3-tetrafluoropropene, the working medium comprises one or more selected from the group consisting of difluoromethane (HFC-32), 1,1-difluoroethane (HFC-152a), 1,1,2,2-tetrafluoroethane (HFC-134), 1,1,1,2-tetrafluoroethane (HFC-134a), pentafluoroethane (HFC-125), 1,1-difluoroethylene (HFO-1132a), 1,2-difluoroethylene (HFO-1132), 1,1,2-trifluoroethylene (HFO-1123), 1,1,1,3,3-pentafluoropropane (HFC-245fa) and a 1,1-dichloro-2,2,2-trifluoroethane (HCFC-123) so that the total including the 1-chloro-2,3,3,3-tetrafluoropropene is 100 mass % of the working medium.

2. The working medium composition according to claim 1 , wherein the mineral oil is present in a content of 10-100 parts by mass based on the working medium (100 parts by mass).

3. The working medium composition according to claim 1 , wherein the mineral oil is present in a content of 20-50 parts by mass based on the working medium (100 parts by mass).

4. The working medium composition according to claim 1 , wherein the mineral oil is a naphthene mineral oil.

5. The working medium composition according to claim 1 , wherein the mineral oil is a paraffin mineral oil.

6. The working medium composition according to claim 1 , wherein the mineral oil is a purified fraction obtained by atmospheric distillation or vacuum distillation of crude oil.

Assignees

• Agc Inc

Inventors

• Fukushima Masato

Classifications

• C09K5/045

  containing only fluorine as halogen · CPC title

• F25B31/002

  Lubrication · 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

• F25B9/002

  characterised by the refrigerant · CPC title

• F25B43/003

  Filters · CPC title