Experimental study of heat and mass-transfer during condensation of steam out of an air-steam mixture in a vessel with vertical contact grids

Abstract

The results of experimental study of heat and mass transfer during condensation of steam mixed with inert gas (air) in a non-adiabatic vessel with vertical contact grids are given in the paper. Piping and Instrumentation Diagram of the laboratory unit is described. The limitations of formally proposed analytic method of study in case of condensation in a vessel with vertical contact grids are analyzed. New classification of hydrodynamic and heat exchange zones in a condenser with vertical contact grids is proposed based on the temperature curves from the results of the experiment. Low effect of inert gas on condensation heat transfer coefficient in a vessel with vertical contact grids is compared in a diagram form to the same effect in case of a horizontal tube and shell and tube heat exchanger.