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STUDY ON SYNTHETIC REFRIGERATION OIL FOR REFRIGERATION SYSTEM USING R134aR22 REFRIGERANT

Chen Meiming,Zong Ming(Chongqing Branch of SINOPEC Lubricant Company,Chongqing400039)  
Based on the requirements of refrigeration system to refrigeration oil,the characteristics of refrigeration oil and adopting technical indexes from the commercial norm A-A-50634 of US Navy as reference,a specification for synthetic refrigeration oil was proposed.Using modified polyether as base oil,the synthetic refrigeration oil meeting said specification was prepared.A series of tests for the obtained refrigeration oil was carried out,such as physical-chemical properties analysis,miscibility with R134aR22 refrigerant,chemical stability(sealed glass tube test),stability(Philips test),insulation and lubricity tests.Finally,it was applied in a compressor of R134a car air conditioner.The results of evaluation and application showed that this synthesized refrigeration oil well met the requirements of the proposed specification,and it could be used in the R134aR22 refrigeration system.
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