Flow condensation heat transfer of propane refrigerant inside a horizontal micro-fin tube

Abstract Due to the phase-out of CFCs and HCFC refrigerants, propane is a nature refrigerant occurring substance produced by natural gas production oil refining. As result, has higher latent heat lower density than conventional refrigerants while maintaining comparable saturation pressure thermal conductivity. So, already widely used in domestic fridges freezers for many years. However, propane’s operating pressures temperatures are well suited air conditioning equipment, including chillers. This study investigates contributions different transfer mechanisms two-phase flow condensation coefficients inside 6.3-mm ID micro-fin copper tube. Data were collected through an experiment with condensation. Measurements taken at mass fluxes from 100 300 kg/m 2 s 3 9 kW/m . In addition, experiments investigated effect vapor quality, flux, flux on coefficients. Finally, new coefficient correlation was developed based experimental data good agreement.