Abstract
Out of three sorbents studied, the silica gel bed, either in adiabatic or diabatic condition, has been found to be best suited for dehumidification of air. The time for its regeneration by a flat plate solar collector is about 2 h as compared to a 1 h dehumidification period for air. Further the distinct changes in its colour during dehumidification and desorption processes provide an easy guide line for changing the cycle. In addition, a comparative analysis has been carried out for five systems in order to select the best one. System III exhibits the overall best performance and is recommended for exploitation. The condition of air attained at the inlet of the room falls near the comfort line on the comfort chart. Hence, in the light of increasing cost of energy, the proposed system would become attractive in the future.
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