Extending ORNL HPDM Capabilities for Design and Optimization of New Refrigerant Blends – FY18 1st Quarterly Milestone: Perform literature review to collect heat transfer, pressure drop correlations and compressor mapping method for alternative refrigerants

Through a comprehensive literature survey, we identified heat transfer and pressure drop correlations for two-phase evaporation and condensation in fin-and-tube coils using microfin tubes and micro-channel heat exchangers. We also developed a compressor mapping method to convert the maps originally developed for R-22 or R-410A to be used by the alternative lower GWP refrigerants. The correlations and method will be implemented in HPDM for design and optimization of air conditioners and heat pumps using the new refrigerants/blends.