ABSTRACT Direct contact condensation is a phenomenon of interest in both the nuclear industry (e.g., pressurizer under normal operating conditions, steam-water interaction in safety analyses), and chemical industry (e.g., mixing-type heat exchangers, degasers, sea-water desalting by multiple distillation, etc.). The present work is an overview of recent experiments of direct contact condensation of steam (saturated or superheated) on a) subcooled water in stratified flow, b) subcooled liquid jets, and c) subcooled liquid sprays. A survey of the literature is presented together with recent and original experimental data carried out at ENEA ENE-IMPE Thermal Process Engineering Division during the last four years. An approach, based on the contribution of turbulence in water to the heat transfer, is presented as a general method to analyse direct contact condensation processes.
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