International Journal of Energy Research, Vol.30, No.6, 381-394, 2006
Application of sandy bed solar collector system for water extraction from air
Extracting water from air by using sandy bed solar collector system is explored in the current paper. The system is studied theoretically and experimentally to evaluate the performance of the sandy bed impregnated with 30% concentration CaCl2 to produce water from moist air. In addition, the system was investigated at three different tilt angles: 15 degrees, 20 degrees and 25 degrees. The theoretical model was constructed to study the effect of various parameters including solution concentration, and solar radiation intensity on the amount of collected water. Results show that sandy bed is effective for collecting water from moist air. The system can provide up to about 1.2-1 fresh water per square meter of glass cover per day. A reasonable agreement between theoretical results and experimental measurements is achieved. Results show also that a slight increase in the system productivity can be generated for 25 degrees inclination angle. Copyright (c) 2005 John Wiley & Sons, Ltd.