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- W93280428 abstract "This paper refers to the development of HFC -134a rotary compressor for household refrigern.tor. A synthesized polyalkylene glycol (PAG) oil and an ester oil which are soluble in HFC-134a had been studied for the refrigerating oil applied to HFC-134a rotary compressor. However, those oils have many problems, such as the poor electrical insulating properties, the capillary tube blockage with sludge, and the increase of wear on sliding surfaces in the compressor. Therefore, we carried out a study for the availability of low viscosity alkyl benzene oil for HFC-134a rotary compressor, and then, new technology of using low viscosity alkyl benzene oil which is insoluble in HFC -134a to rotary compressor has been established. This oil has good lubricity because of its insolubility in HFC-134a. Therefore, amount of wear on sliding surfaces in the compressor has been reduced half as much as that of the previous CFC-12 rotary compressor. Also, the sludge in capillary tube isn't found and the electrical insulating properties are almost the same as CFC-12 rotary compressor oil has. Although this oil has good properties for HFC -134a rotary compressor, there was a difficulty in adopting this oil for HFC-134a compressor. It was necessary to achieve good oil return from refrigerating circuit because this oil is insoluble in HFC -134a. To solve this problem, the oil separator in the compressor and the refrigerating circuit were improved and the critical refrigerant velocity in refrigerating circuit to keep oil return was found out. By these investigation, this low viscosity alkyl benzene oil has become available for HFC-134a rotary compressor. As a result, the new HFC-134a rotary compressor for household refrigerator which is more reliable than the previous CFC -12 rotary compressor has been obtained." @default.
- W93280428 created "2016-06-24" @default.
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- W93280428 date "1994-01-01" @default.
- W93280428 modified "2023-09-24" @default.
- W93280428 title "Development of HFC-134a Rotary Compressor for Household Refrigerator" @default.
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- W93280428 hasPublicationYear "1994" @default.
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