DRINKING WATER BY CONDENSATION OF ATMOSPHERIC WATER VAPOUR USING DIFFERENT MATERIALS

According to WHO about 780 million people in the world is suffering from absence of a reliable source of drinking water. Nowadays most of the freshwater sources are contaminated or polluted by human activities. That creates more health issues day by day. Water vapour in the atmospheric air is an alternate fresh water source. This study was focussed on extract of water vapours by condensation technique.

In this experiment, condensation of dew drops using different materials like Plain glass(PG),Frosted glass(FG),Rexine sheet(RS),GI sheet(GI),Black glossy enamel paint coated GI sheet(BGI) and White glossy enamel paint coated GI sheet(WGI) were conducted.  Also, the relation between the dew water volume with respect to relative humidity, ambient temperature and material temperature were analysed. Finally the dew water quality was analysed in the lab as per IS drinking water standards.

Generally in all the materials, condensation of dew drop occurs below 26°C and above 26°C condensation was nil effect. When relative humidity is above 85%, condensation occurs and below 85 % there is nil effect. It can be seen that Frosted glass (FG) and White glossy enamel paint coated GI sheet (GIW) gave better result. Water quality test of dew water collected was done in the lab, and the test results show that values are within the standard desirable limit . So it is potable to use in Kerala climatic condition.