COMPOSITION FOR HEAT CYCLE SYSTEM, AND HEAT CYCLE SYSTEM

• US 20160355716A1
• Filed: 08/16/2016
• Published: 12/08/2016
• Est. Priority Date: 02/24/2014
• Status: Active Grant

• Current Assignee: AGC, Inc.
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: FUKUSHIMA, Masato, Mitsuoka, Hiroaki, Tasaka, Mai
• Granted Patent: US 10,501,667 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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, which comprises a working fluid for heat cycle containing trifluoroethylene, and a stabilizer for preventing deterioration of the working fluid for heat cycle.

2. The composition for a heat cycle system according to claim 1, wherein the stabilizer is at least one stabilizer selected from an oxidation resistance-improving agent, a heat resistance-improving agent and a metal deactivator.

3. The composition for a heat cycle system according to claim 2, wherein the stabilizer is at least one compound selected from the group consisting of a phenol compound, an unsaturated hydrocarbon group-containing aromatic compound, an aromatic amine compound, an aromatic thiazine compound, a terpene compound, a quinone compound, a nitro compound, an epoxy compound, a lactone compound, an orthoester compound, a mono- or di-alkali metal salt compound of phthalic acid, and a thiodiphenyl ether hydroxide compound.

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

5. The composition for a heat cycle system according to claim 1, which further contains a refrigerant oil.

6. The composition for a heat cycle system according to claim 5, 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.

7. The composition for a heat cycle system according to claim 1, wherein the working fluid for heat cycle further contains at least one member selected from a saturated hydrofluorocarbon.

8. The composition for a heat cycle system according to claim 7, wherein the saturated hydrofluorocarbon is at least one member selected from difluoromethane, 1,1-difluoroethane, 1,1,1,2-tetrafluoroethane and pentafluoroethane.

9. The composition for a heat cycle system according to claim 1, wherein the working fluid for heat cycle further contains at least one member selected from a hydrofluorocarbon having a carbon-carbon double bond other than trifluoroethylene.

10. The composition for a heat cycle system according to claim 9, wherein the hydrofluorocarbon having a carbon-carbon double bond is at least one member selected from 1,3,3,3-tetrafluoropropene and 2,3,3,3-tetrafluoropropene.

11. 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.

12. The composition for a heat cycle system according to claim 11, wherein the proportion of trifluoroethylene is from 20 to 80 mass % based on the working fluid for heat cycle.

13. The composition for a heat cycle system according to claim 11, wherein the working fluid for heat cycle further contains difluoromethane, and the proportion of difluoromethane is at least 20 mass % based on the working fluid for heat cycle.

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

15. The heat cycle system according to claim 14, which is a refrigerating apparatus, an air-conditioning apparatus, a power generation system, a heat transport apparatus or a secondary cooling machine.