Experimental investigation on condensation heat transfer and pressure drop of R134a in a plate heat exchanger

摘要

Condensation heat transfer of R134a in a vertical plate heat exchanger was investigated experimentally. The local heat transfer coefficients are determined by means of the measured local wall temperatures. A differential energy balance model is developed for data evaluation. It is found that the correlation proposed by Shah using ψ and Z factors is suitable for condensation in plate heat exchangers and is adopted to fit the measured data.