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This story is from September 22, 2005
Rich haul: Tap desert dew, the Kutchi way
Dew harvesting systems are being promoted in Kutch.In four months 1,300 litres of potable water was made available.
AHMEDABAD: For inmates of a Jain temple at Suthri in the arid coastal area of Kutch district, the search for potable water is almost over.
In four months ��� from February to May this year ��� 1,300 litres of potable water was made available at the temple by harvesting dew collected from a rooftop.
Similarly, at Ashram School in Kothara of Abdasa taluka, 925 litres of potable water was made available from dew harvesting between March and May.
And very soon, bottles of water called Kutch Dew, would be available in the market in the region, courtesy a development and outreach station (DOS) at Kothara set up under an IIM-Ahmedabad and Cummins partnership for developing ecofriendly technologies in arid areas.
Programme coordinator Girja Sharan of IIM-A told TOI that the technology, which has met with success in Kutch, can be replicated in small isolated islands, desert areas and mountains.
Dew harvesting systems are now being promoted in Kutch ��� for families and communities in the coastal belt. Properties that have a large iron roof ��� fodder warehouses, cattle sheds, factories and workshops ��� can readily be used for harvesting dew, he said.
Measurements done over the past two years have...
... shown that coastal areas of Kutch receive dew over a long season from October to early May.
Dew fall occurs on about 90 to 100 nights during the season. The maximum dew collection in one night was on March 13 was 70 litres, said research engineer Kamlesh Jethwa.
A dew harvest system consists of a condenser surface made of a thin metal sheet or plastic film insulated on the underside, water collection and conveyance accessories and storage.
Systems using plastic condensers have been developed for use of individual families and these yield about 20 litres per day.
Total collection over the season of eight months would be approximately 5,000 litres, coming at an installation cost of approximately Rs 30,000, Sharan said.
The DOS plans to go commercial from this October now that its demonstration systems are complete.
Plans are afoot to set up a system at the Gujarat Mineral Development Corporation (GMDC) site at Panandhro with a target to collect at least 300 litres of water per day.
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