Dew yield from passive condensers in a coastal arid area - Kutch

Abstract

Dewfall occurs over a season of nine months in coastal arid district of Kutch. Quantity too is appreciable. A research program has been started to develop efficient passive condensers to harvest dew and use it as a supplementary source of drinking water which is scarce in the area. A passive condenser is a device that cools itself at night by radiative exchange with clear sky. Under favorable conditions condenser may become colder than the dew point of surrounding humid air and attract condensation.