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Working medium for heat cycle, composition for heat cycle system, and heat cycle system

A technology of working medium and circulation system, applied in the field of thermal circulation system, can solve problems such as not given, and achieve the effect of high stability

Inactive Publication Date: 2017-02-15
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, as an alternative substitute for R410A and HFC-134a, from the viewpoint of obtaining a working medium that can be put into practical use considering the balance of capability, efficiency and temperature gradient, no combination of HFO-1132 and HFO is given in Patent Document 1. Insights and enlightenment from combining two or more of other HFOs as a working medium

Method used

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  • Working medium for heat cycle, composition for heat cycle system, and heat cycle system
  • Working medium for heat cycle, composition for heat cycle system, and heat cycle system
  • Working medium for heat cycle, composition for heat cycle system, and heat cycle system

Examples

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Embodiment

[0220] The following examples illustrate the present invention in detail, but the present invention is not limited to these examples.

[0221] (HFO-1132 and self-decomposability test of mixed media containing HFO-1132)

[0222] The monomers of HFO-1132(Z) and HFO-1132(E) or the mixing medium obtained by mixing them with HFC-32, HFC-125, HFC-134a, HFO-1234yf in the ratio shown in Table 3 are used as For samples a to f, the self-decomposability test was carried out according to the following method.

[0223] Use an internal volume of 650cm 3 In accordance with the method based on Method A recommended as a device for measuring the combustion range of gas mixed with halogen-containing gas in the individual documents of the High Pressure Gas Security Act, the linkage of samples a to f was confirmed The presence or absence of self-decomposition reaction.

[0224] A platinum wire with an outer diameter of 0.5 mm and a length of 25 mm was fused (hot wire method) with a voltage and current of...

example 1～140

[0231] In Examples 1-70, HFO-1132 (Z) and two selected from HFC-32, HFC-125, HFC-134a, HFO-1234yf, and HFO-1234ze (E) were prepared in proportions shown in Tables 5-9 For the mixed working medium, (A) temperature gradient and relative freezing capacity (B1) RQ with respect to R410A were obtained by the above method under the temperature conditions of the above standard refrigeration cycle R410A , Relative efficiency coefficient (C1) RCOP R410A 、Relative freezing capacity (B2) RQ relative to HFC-134a R134a , Relative efficiency coefficient (C2) RCOP R134a . The results are shown in Tables 5-9.

[0232] In Examples 71 to 140, HFO-1132 (E) and two selected from HFC-32, HFC-125, HFC-134a, HFO-1234yf, and HFO-1234ze (E) were prepared in proportions shown in Tables 10 to 14 For the mixed working medium, (A) temperature gradient and relative freezing capacity (B1) RQ with respect to R410A were obtained by the above method under the temperature conditions of the above standard refrig...

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Abstract

Provided are: a working medium for a heat cycle, said working medium containing 1,2-difluoroethylene and exhibiting high stability, reduced environmental impact, and cycle performance that can replace that of R410A (a pseudo-azeotropic mixed refrigerant including difluoromethane and pentafluoroethane at a mass ratio of 1:1) and 1,1,1,2-tetrafluoroethane; a composition for heat cycle system, said composition using the medium; and a heat cycle system using the composition. The working medium for a heat cycle is characterized by the inclusion of 1,2-difluoroethylene and at least two types of hydrofluorocarbon selected from the group of hydrofluorocarbons that include a carbon-carbon double bond other than a saturated hydrofluorocarbon and 1,2-difluoroethylene.

Description

Technical field [0001] The present invention relates to a working medium for thermal cycle, a composition for a thermal cycle system containing the working medium, and a thermal cycle system using the composition. Background technique [0002] In this specification, for halogenated hydrocarbons, the compound abbreviation is described in parentheses after the compound name, and the abbreviation is used instead of the compound name in this specification as necessary. [0003] In the past, as refrigerants for refrigerators, refrigerants for air conditioners, working media for power generation systems (waste heat recovery and power generation, etc.), working media for latent heat transfer devices (heat pipes, etc.), and working media for thermal cycle systems such as secondary cooling media, Chlorofluorocarbons (CFC) such as monochlorotrifluoromethane and dichlorodifluoromethane, and hydrochlorofluorocarbons (HCFC) such as monochlorodifluoromethane are used. However, CFC and HCHC have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/126C09K2205/22C09K2205/122C09K2205/40F25B1/00F25B31/002F25B43/00F25B2400/12F25B2500/16F25B2500/19
Inventor 福岛正人
Owner ASAHI GLASS CO LTD
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