Nucleate Boiling Performance of Refrigerants and Refrigerant-Oil Mixtures

Current and previous studies by the authors and others have shown that the carry-over on oil in refrigeration systems can have a significant influence of the boiling performance in the evaporator of refrigeration systems. This investigation was conducted primarily to develop a general correlation equation for predicting the heat transfer coefficient for refrigerants and refrigerant-oil mixtures under pool boiling conditions. Experimental results were obtained to establish the validity of the correlation equation.