Experimental investigations of atmospheric water extraction device under different climatic conditions

Abstract

To help address this emergency, an atmospheric water extracting (AWE) device is developed and investigated as a part of present work. The AWE device is working on vapour compression refrigeration cycle. The air moisture condenses over the evaporator coil. The amount of condensate depends on psychrometric condition of incoming air. In this paper, the performance investigations are presented of an AWE device under different climatic conditions. The machine is integrated with a climatic chamber to from different climatic conditions in the laboratory to obtain the performance characteristics of AWE device. Total seven different climatic conditions were replicated as: humid and warm, humid and mild, humid and cold, dry and warm, dry and mild, mild and the last was mild humid and warm. The results indicated that the minimum energy intensity is found as 0.75 kWh per liter of water at the rate of 1.78 L per hour for warm- humid condition and maximum energy intensity is found as 4.71 kWh per liter of water at the rate of 0.28 L per hour for mild and dry condition. The present study concludes that AWE devices are most effective in hot and humid regions.