Solar desorption of absorbent solutions

Abstract In hot humid climates, like that of Madras, a coastal city, it is attractive to dehumidify room air using an absorbent solution and desorb the water from the solution by solar heating. If a desorption tower is used for transfer of water from the solution to the outdoor air, a blower is required to produce the air flow. It is found by analysis, however, that it is possible to achieve this desorption in the solar collector itself. Water is transfered to the ambient air which flows through the solar collector-cum-desorber by thermo-siphon action. The performance characteristics of the proposed collector-cum-desorber were found to be excellent by theoretical calculations. These have been confirmed by experiments.