Composition for heat cycle system, and heat cycle system

• US 10,501,667 B2
• Filed: 08/16/2016
• Issued: 12/10/2019
• Est. Priority Date: 02/24/2014
• Status: Active Grant

• Current Assignee: AGC, Inc.
• Original Assignee: AGC, Inc.
• Inventors: Fukushima, Masato, Mitsuoka, Hiroaki, Tasaka, Mai
• Primary Examiner(s): Hardee, John R
• Application Number:
  US15/238,117
• Publication Number:
  US 20160355716A1
• Time in Patent Office: 1,211 Days
• CPC Class Codes: C09K 2205/122 Halogenated hydrocarbons
• CPC Class Codes: C09K 2205/126 Unsaturated fluorinated hydrocarbons
• CPC Class Codes: C09K 2205/22 All components of a mixture being fluoro compounds
• CPC Class Codes: C09K 2205/40 Replacement mixtures
• CPC Class Codes: C09K 5/045 containing only fluorine as halogen
• CPC Class Codes: C10M 105/06 aromatic
• CPC Class Codes: C10M 105/36 of polycarboxylic acids
• CPC Class Codes: C10M 105/38 of polyhydroxy compounds
• CPC Class Codes: C10M 105/44 derived from the combination of monocarboxylic acids, dicarboxylic acids and dihydroxy compounds only and having no free hydroxy or carboxyl groups
• CPC Class Codes: C10M 105/48 of carbonic acid
• CPC Class Codes: C10M 107/24 containing monomers having an unsaturated radical bound to an alcohol, aldehyde, ketonic, ether, ketal or acetal radical
• CPC Class Codes: C10M 107/34 Polyoxyalkylenes
• CPC Class Codes: C10M 171/008 Lubricant compositions compatible with refrigerants
• CPC Class Codes: C10M 2203/003 used as base material
• CPC Class Codes: C10M 2203/024 unsaturated
• CPC Class Codes: C10M 2203/065 used as base material
• CPC Class Codes: C10M 2205/223 used as base material
• CPC Class Codes: C10M 2207/023 having hydroxy groups bound to carbon atoms of six-membered aromatic rings
• CPC Class Codes: C10M 2207/026 with tertiary alkyl groups
• CPC Class Codes: C10M 2207/04 Ethers; Acetals; Ortho-esters; Ortho-carbonates
• CPC Class Codes: C10M 2207/0406 : used as base material
• CPC Class Codes: C10M 2207/042 : Epoxides
• CPC Class Codes: C10M 2207/046 : Hydroxy ethers
• CPC Class Codes: C10M 2207/144 : containing hydroxy groups
• CPC Class Codes: C10M 2207/2805 : used as base material
• CPC Class Codes: C10M 2207/2835 : used as base material
• CPC Class Codes: C10M 2209/043 : used as base material
• CPC Class Codes: C10M 2209/1033 : used as base material
• CPC Class Codes: C10M 2209/1055 : used as base material
• CPC Class Codes: C10M 2209/1085 : used as base material
• CPC Class Codes: C10M 2215/064 : Di- and triaryl amines
• CPC Class Codes: C10M 2215/202 : containing nitro groups
• CPC Class Codes: C10M 2219/084 : containing hydroxy groups; Derivatives thereof
• CPC Class Codes: C10M 2219/104 : containing sulfur and carbon with nitrogen or oxygen in the ring
• CPC Class Codes: C10M 2219/108 : Phenothiazine
• CPC Class Codes: C10N 2010/02 : Groups 1 or 11
• CPC Class Codes: C10N 2020/02 : Viscosity; Viscosity index
• CPC Class Codes: C10N 2020/101 : Containing Hydrofluorocarbons
• CPC Class Codes: C10N 2030/02 : Pour-point; Viscosity index
• CPC Class Codes: C10N 2030/10 : Inhibition of oxidation, e.g. anti-oxidants
• CPC Class Codes: C10N 2030/66 : Hydrolytic stability
• CPC Class Codes: C10N 2030/70 : Soluble oils
• CPC Class Codes: C10N 2040/30 : Refrigerators lubricants or compressors lubricants
• CPC Class Codes: F25B 1/00 : Compression machines, plants or systems with non-reversible cycle F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence
• CPC Class Codes: F25B 31/002 : Lubrication
• CPC Class Codes: F25B 43/00 : Arrangements for separating or purifying gases or liquids in analysers or rectifiers F25B33/00; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat F25B40/00 takes precedence

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.

Claims

1. A composition for a heat cycle system, comprising:

a working fluid for heat cycle comprising;

trifluoroethylene;

difluoromethane; and

2,3,3,3-tetrafluoropropene or 1,3,3,3-tetrafluoropropene;

a refrigerant oil; and

a stabilizer for preventing deterioration of the working fluid for heat cycle, comprising at least one selected from the group consisting of 1,4-benzoquinone, phenothiazine, and 3-methoxyphenol.

2. The composition for a heat cycle system according to claim 1, which contains the stabilizer in an amount of at least 1 mass ppm.

3. The composition for a heat cycle system according to claim 1, wherein the refrigerant oil is at least one member selected from an ester refrigerant oil, an ether refrigerant oil, a polyglycol oil and a hydrocarbon refrigerant oil.

4. The composition for a heat cycle system according to claim 1, wherein the proportion of trifluoroethylene is at least 10 mass % based on the working fluid for heat cycle.

5. The composition for a heat cycle system according to claim 4, wherein the proportion of trifluoroethylene is from 20 to 80 mass % based on the working fluid for heat cycle.

6. The composition for a heat cycle system according to claim 4, wherein the proportion of difluoromethane is at least 20 mass % based on the working fluid for heat cycle.

7. The composition for a heat cycle system according to claim 1, wherein the refrigerant oil comprises at least one selected from pentaerythritol octanoate nonanoate, a copolymer of ethyl vinyl ether and isobutyl vinyl ether, a compound obtained by methyl-etherifying both terminals of polypropylene glycol, and an alkylbenzene.

8. A heat cycle system, which employs the composition for the heat cycle system as defined in claim 1.

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