Solar-driven technology for freshwater production from atmospheric air by using the composite desiccant material 'CaCl_2/floral foam'

摘要

In this communication, experiments have been performed to check the capability of the newly formed composite desiccant material (CaCl_2/floral) for the extraction of freshwater from atmospheric air. Three numbers of solar glass desiccant box type system (SGDBS) with a captured area of 0.36 m~2 each, have been used. The design parameters for the water production are height of glass from desiccant bed at 0.22 m, inclination in angle as 30°, the effective thickness of glass as 3 mm and number of glazing as single. The maximum yield by the new composite desiccant material is 0.35 ml/cm~3/day. The efficiency of the system SGDBS with 37 % concentration of CaCl_2 is 76.44 %.