Investigations of Performance of Mini-Channel Condensers and Evaporators for Propane

This paper provides the results of experimental investigations exemplary mini-channel heat exchanger in its application as a condenser and an evaporator compressor refrigeration system with propane working fluid. The aim was to identify mean transfer coefficient refrigerant side for entire operating range tested exchanger. experiments covered mass velocity from 50 160 kg/(m2 × s). liquid subcooling 3 15 K vapour superheating at outlet up K. on were conducted saturation temperature 34 °C, case evaporator, 8 °C. average coefficients well pressure drops operation calculated. calculated by means separated thermal resistance method Wilson plot technique. confirmed increase flow rate A dimensionless correlation proposed drop based modified Müller-Steinhagen evaporator.