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Working medium for thermal cycle

A technology of working medium and thermal cycle, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of unavailable working medium with cycle performance and impurities in the product, and achieve excellent cycle performance with little impact

Active Publication Date: 2016-10-12
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although HFO-1123 can be produced by various methods, no matter which method is used, there are impurities in the product
Therefore, in the case of directly using such impurity-containing HFO-1123 (hereinafter also referred to as crude HFO-1123), sometimes a working medium with excellent cycle performance cannot be obtained.

Method used

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Examples

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Embodiment

[0216] Hereinafter, the present invention will be described by way of examples, but the present invention is not limited to the following examples. The odd numbers in Examples 1 to 3 and Examples 5 to 163 are examples, and the even numbers in Examples 4 to 164 are comparative examples.

example 1～164

[0218] The following working medium was prepared: containing HFO-1123, HFC-32 and / or HFO-1234yf, HFO-1234ze(E) in the ratio shown in Table 3 to Table 7, and with the relative working medium shown in the same table The proportion of medium contains HFO-1132a. Then, the refrigeration cycle performance (hereinafter referred to as refrigeration capacity Q) was measured for these working media by the following method.

[0219] In addition, the refrigerating capacity Q refers to the capacity of refrigerating the loaded fluid, and the higher the Q, the more work can be realized in the same system. In other words, when the Q value is large, it means that the target performance can be obtained with a small amount of working medium, and the miniaturization of the system can be realized.

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Abstract

Provided is a working medium that is for a thermal cycle, has favorable cycling performance, and has a low effect on global warming and a low effect on the ozone layer. The working medium for a thermal cycle contains trifluoroethylene and difluoroethyelene, and the fraction of the difluoroethylene content with respect to the working medium is less than 1.5 mass%.

Description

technical field [0001] The invention relates to a working medium for thermal cycles. Background technique [0002] Conventionally, as refrigerants for refrigerators, refrigerants for air conditioners, working media for power generation systems (waste heat recovery power generation, etc.), working media for latent heat transport devices (heat pipes, etc.), and secondary cooling media, etc., Use of chlorofluorocarbons (CFCs) such as chlorotrifluoromethane (CFC-13), dichlorodifluoromethane (CFC-12), or hydrochlorofluorocarbons (HCFCs) such as chlorodifluoromethane (HCFC-22) . However, CFCs and HCHCs have been pointed out to have an impact on the stratospheric ozone layer, and are currently subject to regulation. [0003] In this specification, for halogenated hydrocarbons, the abbreviation of the compound is described in parentheses after the compound name, but the abbreviation is used instead of the compound name in this specification as necessary. [0004] For these reason...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/126C09K2205/22C09K2205/122
Inventor 田坂真维福岛正人河口聪史谷口智昭竹内优
Owner AGC INC
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