Oil discharge rate in rotary compressor has a significant influence on heat transfer performance of condenser and evaporator in air conditioning system. In order to find out the influence which caused by the structure of rotary compressor on the oil discharge rate, the flow field of rotary compressor has been calculated by VOF method and the lubricant distribution in rotary compressor can be obtained. At the same time, Oil discharge rate in rotary compressor at different operating conditions has been calculated in this paper.
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