Water generation from atmospheric air by using composite desiccant material through fixed focus concentrating solar thermal power

In this manuscript, experimental investigations have been performed in order to generate water from atmospheric air by using different composite materials under atmospheric condition of NIT, Kurukshetra, Haryana, India [29°58′ (latitude) North and 76°53′ (longitude) East]. In this analysis, three composite materials named LiCl/sand(CM-1), CaCl2/sand(CM-2) and LiBr/sand (CM-3) have been used as salt with 37% concentration and sand as a host material. The absorption and regeneration processes have been performed to generate water from atmospheric air. The absorption process has been carried out at night in the open atmosphere whereas regeneration process took place during the day time by using newly designed 1.54 m2 Scheffler reflector. The maximum amount of water generated from CM-1, CM-2 and CM-3 are 90 ml/day, 115 ml/day and 73 ml/day in 330 min, 270 min and 270 min respectively and the annual cost of water generation are $0.71, $0.53 and $0.86 respectively.