In open cycle liquid desiccant air conditioning, the solar collector regenerator is one of the
effective ways of regenerating liquid solution. In this work, the regeneration of liquid solution using cross flow of air stream with flowing film of desiccant on the surface of a solar
collector/regenerator has been investigated. To evaluate the effect of cross flow of air stream
on the performance of the unit, two identical units are constructed and tested in the same
conditions of operation. One of the two units was augmented with air blower. The absorber
plate is a black cloth layer. The forced air stream, which flows across the absorber removes
the moisture from the liquid solution. The regeneration in the other collector/regenerator
unit is free. The results show enhancement of regeneration efficiency for the forced cross
flow compared with the free regeneration. The effect of concentration and flow rate on the
performance is discussed. Two relations for regeneration efficiency as a function of concentration for the two units are introduced.