Abstract
Considering ozone depletion and global warming, the conversion from CFC's and HCFC's to alternative/natural refrigerants is an issue of crucial importance. In addition, based on the severe national energy conservation policy, nowadays, all elements of refrigerating and air-conditioning system are subject of research and development. Under these circumstances, and experimental study on condensation is made using V-grooved copper tube and R410A as working refrigerant in this study. Finally, to take into account the heat transfer enhanced effect, the correlation of condensation heat transfer and pressure drop are proposed.
