Seminar 58 -- Performance of Alternative Low GWP A2L Refrigerants in Evaporators PDF

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There has been a continuous effort to evaluate the performance of alternative refrigerants, which can substitute conventional working fluids like R410A, in current HVAC&R systems to have reduced environmental impact. This seminar highlights the performance of low GWP and A2L refrigerants and blends under flow boiling or evaporation inside internally enhanced tubes, small size channels, and plate heat exchangers. The seminar helps to identify the potential of Artificial Neural Network to predict the boiling heat transfer coefficients for the new refrigerants. This session will benefit engineers to design improved heat exchangers for their new or existing systems.

1. Heat Transfer Coefficient and Pressure Drop during Flow Boiling of A2L Refrigerants< /br>Claudio Zilio, Ph.D., Dept. Management and Technology, University of Padova Italy, Vicenza, Italy
2. Evaporation of Low GWP A2L Refrigerants in Small Diameter Tubes and Plate Heat Exchanger< /br>Akio Miyara, Ph.D., Member, Saga University, Saga-shi, Japan