Experimental investigation of the efficiency of a spray-wetted finned tube bank

This paper presents the experimental results obtained for a three-Tiered finned tube bank with the aid of which a heat-carrying fluid heats a wet air stream entraining a water spray. A study was made of the thermal behavior of the two-phase humid-air/water-spray stream flowing over the finned tube bank when the inlet temperature of the process fluid (water) is low and the difference between the inlet temperature of the two streams (air/water mist and process fluid flow) is very small. The results are given in terms of enthalpic efficiency for both mist flow and single air flow conditions.