Water generation from atmospheric air by using different composite desiccant materials

ABSTRACT

In this communication, new composite desiccant materials having 37% concentration of CaCl₂ have been compared for water production from atmospheric air. The vermiculite–saw wood, jute and burnt-clay have been used as host materials and CaCl₂ 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 m². 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.

KEYWORDS:

• Solar glass desiccant box type system (SGDBS)
• adsorption
• CaCl₂
• vermiculite
• saw wood
• water

Disclosure statement

No potential conflict of interest was reported by the authors.