Water generation from atmospheric air by using different composite desiccant materials

摘要

In this communication, new composite desiccant materials having 37% concentration of CaCl_2 have been compared for water production from atmospheric air. The vermiculite-saw wood, jute and burnt-clay have been used as host materials and CaCl_2 as a hygroscopic salt. All the desiccant materials have been tested with the solar glass desiccant box type system (SGDBS) with a collector area of 0.36 m~2. Design parameters for water production are: height of the glass from the desiccant bed to be 0.22 m, an inclination angle of 30°, the effective thickness of the glass as 3 mm and the number of glazing is single. It has been found that on the experimental day, the maximum amount of fresh water generated by the vermiculite-saw wood/CaCl2 is 130 ml/kg/day.