Working medium for heat cycles, composition for heat-cycle systems, and heat-cycle system

A technology of working medium and circulation system, applied in the field of thermal cycle system, can solve the problems of heat resistance, difficulty in obtaining energy efficiency thermal cycle system, etc., and achieve the effects of high durability, excellent energy efficiency, and low discharge temperature

Active Publication Date: 2016-11-16
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, from the viewpoint of the balance of various characteristics such as refrigeration capacity, efficiency, temperature gradient, and discharge temperature, the working medium for thermal cycles described in Patent Document 3 cannot fully satisfy these requirements.
[0010] For example, if the compressor discharge gas temperature (hereinafter referred to as the discharge temperature) is high, there is heat resistance to the materials constituting the compressor, refrigerating machine oil and organic compounds that are usually included in the composition for the thermal cycle system together with the working medium. impact issues
In addition, if the temperature gradient when using the working medium for the thermal cycle in the refrigeration cycle is too large, it will be difficult to obtain a thermal cycle system with good energy efficiency.

Method used

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  • Working medium for heat cycles, composition for heat-cycle systems, and heat-cycle system
  • Working medium for heat cycles, composition for heat-cycle systems, and heat-cycle system
  • Working medium for heat cycles, composition for heat-cycle systems, and heat-cycle system

Examples

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Embodiment

[0187] Hereinafter, the present invention will be described in detail through examples, but the present invention is not limited to the following examples. Examples 1 to 48 are examples, and Examples 50 to 55 are reference examples having different compositions from the working medium of the present invention. In addition, Example 49 is an example of R410A used as an evaluation standard in the working examples of Examples 1 to 48 and the reference examples of Examples 50 to 55, and is a comparative example.

[0188] The measurement and evaluation of the refrigeration cycle performance (refrigeration capacity Q and efficiency coefficient COP), temperature gradient and discharge temperature of the working medium are carried out in the following manner.

[0189]

[0190] The determination of refrigeration cycle performance (refrigeration capacity and efficiency coefficient) and temperature gradient is carried out as follows: figure 1 The working medium is used in the shown ref...

example 1～12

[0202] Among examples 1~12, preparation mixes the working medium of HFO-1123 and HFO-1132 with the ratio shown in table 2, according to above-mentioned method to the refrigerating cycle performance (freezing ability Q and coefficient of efficiency COP) of these working mediums, temperature gradient and The discharge temperature was measured and evaluated.

[0203] Table 2 shows the measurement and evaluation results of the refrigeration capacity (with respect to R410A) and the efficiency coefficient (with respect to R410A), the measurement results of the temperature gradient and the discharge temperature difference, and the calculation results of GWP.

[0204] [Table 2]

[0205]

[0206] From the results shown in Table 2, it can be seen that the working mediums of Examples 1 to 12 composed of HFO-1123 and HFO-1132(E) not only have good efficiency coefficient and refrigeration capacity relative to R410A, but also have a small temperature gradient. In addition, GWP is also a...

example 13～48

[0208] In Examples 13 to 20, working media in which HFO-1123, HFO-1132(E), and HFC-32 were mixed in the proportions shown in Table 3 were prepared. In addition, in Examples 21 to 28, working media in which HFO-1123, HFO-1132(E), and HFC-125 were mixed at the ratios shown in Table 4 were prepared. In Examples 29 to 34, working mediums in which HFO-1123, HFO-1132(E), HFC-32 and HFC-125 were mixed in the proportions shown in Table 5 were prepared. Further, the ratio of HFO-1132(E) prepared in Example 35 to Example 48 was 10% by mass, and HFO-1132(E), HFO-1123, HFC-32 and / or HFC-32 were mixed in the ratio shown in Table 6. 125 working medium. In addition, in Tables 3 to 6, as "1123+1132" [mass %], the ratio of the total amount of HFO-1123 and HFO-1132 (E) to the total amount of the working medium is expressed in mass % ((1123+1132) / working medium). The same applies to Table 2 and Table 8 described below.

[0209] With respect to the working medium thus obtained, the refrigera...

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Abstract

Provided are: a working medium for heat cycles which has a low impact on global warming, a low temperature gradient, and a sufficiently low discharge temperature, and which exhibits excellent cycle performance (i.e. refrigeration capacity and coefficient of performance); a composition for heat-cycle systems; and a heat-cycle system. The working medium for heat cycles includes trifluoroethylene and 1, 2-difluoroethylene. Also provided are: a composition for heat-cycle systems; and a heat-cycle system which uses the working medium and the composition. It is prefereable that, in the working medium for heat cycles, the ratio of the total amount of trifluoroethylene and 1, 2-difluoroethylene be at least 20 mass%, and equal to or less than 100 mass%.

Description

technical field [0001] The present invention relates to a working medium for a thermal cycle, a composition for a thermal cycle system containing the working medium, and a thermal cycle system using the composition. Background technique [0002] Conventionally, monochlorine has been used as a working medium such as a refrigerant for refrigerators, a refrigerant for air conditioners, a working fluid for power generation systems (waste heat recovery power generation, etc.), a working medium for latent heat transfer devices (heat pipes, etc.), and a secondary cooling medium. Chlorofluorocarbons (CFCs) such as trifluoromethane and dichlorodifluoromethane, and hydrochlorofluorocarbons (HCFCs) such as chlorodifluoromethane. 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 addition, in this specification, with respect to a halogenated hydrocarbon, the abbreviation of the compound ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04F25B1/00
CPCC09K5/04C09K2205/126C09K5/045C09K2205/122C09K2205/22F25B1/00F25B31/002F25B43/00
Inventor 福岛正人
Owner AGC INC
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