R410A flow condensation inside two dimensional micro-fin tubes and three dimensional dimple tubes

Condensation heat transfer characteristics were experimentally investigated inside two dimensional helix micro fin (HX) tubes, three-dimensional dimple (1EHT) tubes and smooth (ST) tubes; while using R410A, for a variety of operating conditions and tube parameters. Tubes evaluated had a length of 2 m, with outer diameters of 9.52 and 12.7 mm; tube materials included copper and stainless steel. Experimental procedure was verified using a...