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Composition for heat cycle system, and heat cycle system

A circulation system and composition technology, applied in lubricating compositions, irreversible cycle compression machines, heat exchange materials, etc., can solve problems such as poor stability

Inactive Publication Date: 2018-01-02
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, HFO-1123 is a compound containing unsaturated bonds in its molecule, and since it is a compound with a very short life in the atmosphere, it is different from conventional saturated hydrofluorocarbons and hydrogen under repeated compression and heating conditions in a thermal cycle system. The problem of poorer stability compared to chlorofluorocarbons

Method used

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  • Composition for heat cycle system, and heat cycle system
  • Composition for heat cycle system, and heat cycle system
  • Composition for heat cycle system, and heat cycle system

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Embodiment

[0255] Hereinafter, the present invention will be described in detail through examples, but the present invention is not limited to the following description. The following evaluations of flammability, refrigeration cycle performance, and GWP were performed on the working medium used in the present invention.

[0256] [Flammability Evaluation]

[0257] The flammability evaluation was carried out using the equipment specified in ASTM E-681.

[0258] HFO-1123, HFC-134a, HFC-125, and HFO-1234yf were mixed so that the ratio of each medium was as shown in Table 2, and a working medium of a 4-component system was prepared. Each working medium prepared was mixed with air so that each working medium had a ratio of 10 to 90% by mass relative to the air, and the flammability when mixed with air to reach an equilibrium state was evaluated at every 1% by mass ratio.

[0259] After evacuating the flask with an inner volume of 12 liters set in a thermostat controlled at a temperature of 2...

example 1～222

[0272] With reference to embodiment (example 1~43, example 64~106, example 127~169, example 190~212), comparative example (example 44~53, example 107~116, example 170~179, example 213~217) and reference Examples (Examples 54-63, Examples 117-126, Examples 180-189, and Examples 218-222) further describe in detail the composition for thermal cycle systems of the present invention. In each example, a stabilizer and a refrigerating machine oil were mixed with working media 4 to 38 in Table 3 at the compounding ratio (mass %) shown in Tables 4 to 17 to prepare a composition for a thermal cycle system.

[0273] Use the ingredients shown below as stabilizers and refrigerator oils.

[0274] Stabilizer 1: 2,6-di-tert-butyl-4-methylphenol

[0275] Stabilizer 2: 1,4-Benzoquinone

[0276] Stabilizer 3: phenothiazine

[0277] Stabilizer 4: 3-methoxyphenol

[0278] Refrigeration machine oil 1 (polyol ester): pentaerythritol caprylate nonanoate, carbon / oxygen molar ratio is 4.8 (kinematic ...

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Abstract

Provided is a composition for a heat cycle system, having excellent cycle performance and a low global warming potential, having an incombustible operating medium, and which, even in the event of a leakage, has minimal impact on the ozone layer and on global warming, is extremely safe, and more stable HFO-1123. The composition for heat cycle system contains: an operating medium for heat cycle, containing HFO-1123, HFC-134a, HFC-125 and HFO-1234yf, wherein the total content of HFO-1123, HFC-134a, HFC-125 and HFO-1234yf exceeds 90% by mass but does not exceed 100% by mass with respect to the total quantity of the operating medium, the proportion of HFO-1123 with respect to the total quantity of HFO-1123, HFC-134a, HFC-125 and HFC-1234yf is 3-35% by mass, the proportion of HFC-134a is 10-53%by mass, the proportion of HFC-125 is 4-50% by mass, and the proportion of HFO-1234yf is 5-50% by mass; and a stabilizer.

Description

technical field [0001] The present invention relates to a composition for a thermal cycle system and a thermal cycle system using the composition. Background technique [0002] In this specification, the compound abbreviation of a halogenated hydrocarbon is described in the parentheses after a compound name, and the abbreviation is used instead of a compound name in this specification as needed. [0003] In the past, 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. Chlorofluorocarbons (CFCs) such as chlorotrifluoromethane and dichlorodifluoromethane, and hydrochlorofluorocarbons (HCFCs) such as chlorodifluoromethane are used. However, CFCs and HCHCs have been pointed out to have an impact on the stratospheric ozone layer, and are currently subject to regulation. ...

Claims

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Application Information

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IPC IPC(8): C09K5/04C10M105/06C10M105/36C10M105/38C10M105/42C10M105/48C10M107/24C10M107/34C10M127/02C10M127/04C10M129/10C10M129/18C10M129/70C10M133/12C10M133/32C10M135/36F25B1/00C10N30/00C10N40/30
CPCC09K5/04C10M105/06C10M105/36C10M105/38C10M105/42C10M105/48C10M107/24C10M107/34C10M127/02C10M127/04C10M129/10C10M129/18C10M129/70C10M133/12C10M133/32C10M135/36F25B1/00Y02P20/10
Inventor 田坂真维福岛正人光冈宏明
Owner ASAHI GLASS CO LTD
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