We make a theoretical analysis of the experimental results and draw some conclusions as follows : the saturated temperature r290 - oil mixture is higher than that of pure r290 at a same pressure . the temperature difference , which is called superheat temperature of refrigerant - oil mixtures , increases as the oil concentration and the vapor quality are increased at a certain saturated pressure and pressure has negligible effect on the superheat temperature of the mixture . ( oil concentration is 0 . 43 ? - 5 . 28 ? )
2.
The conclusions reached are as follows : 1 . the saturated temperature of refrigerant - oil mixture is higher than that of pure refrigerant at a same pressure . the temperature difference , which is called superheat temperature of refrigerant - oil mixture , increases as the oil concentration and the vapor quality are increased at a certain saturated pressure and pressure has negligible effect on the superheat temperature of the mixture
3.
The conclusions reached are as follows : ( 1 ) the saturated temperature of refrigerant - oil mixture is higher than that of pure refrigerant at a same pressure . the temperature difference , which is called superheat temperature of refrigerant - oil mixture , increases as the oil concentration and the vapor quality are increased at a certain saturated pressure and pressure has negligible effect on the superheat temperature of the mixture
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