Dehumidification of moist air by direct contact heat and mass transfer in cold water solution (propylene glycol water solution)

摘要

This paper has dealt with the direct contact heat and mass transfer characteristics of dehumidification of flowing moist air bubbles in a cold water solution (propylene glycol). The saturated water-vapor humidity of propylene glycol water solution was measured under some conditions of temperature and mass concentration of the water solution. Experiments on dehumidification of air bubbles were performed by ascending air bubbles in the water absorbing solution for various parameters of air temperature, humidity and flow rate etc. The experimental data of air bubble diameter, dehumidification rate and apparent heat transfer coefficient were correlated by means of some experimental parameters such as air temperature, humidity, flow rate and height of water solution layer.