Abstract: The invention discloses the design of an improved household solar still with enhanced output and high recovery. The output and recovery are enhanced by (i) aligning the top glass and basin so as to maximize the input solar radiation, (ii) using North-South reflectors in V trough configuration to further raise the incident radiation, (iii) employing metallic condensers on sides to maximize condensation efficiency, (iv) using suitably heated and cooled saline water by taking advantage of ambient temperature differential during a day and using such water as feed water and condenser water respectively. Use of detachable top glass assembly and teflon cork at the bottom allows for easy cleaning of the interior of the still and discharge of concentrate, respectively. The still is also demonstrated to be useful for other applications where, besides producing distilled water, the concentrate is a more value added product than the feed.

Abstract: A desalination unit for production of potable water from sub-soil brine including in combination a trapezoidal basin, a condenser, a feed tank, a header, a heat exchanger, a flush valve, a sprinkling system, exhaust heat pipe and water collecting channel; where the exhaust heat pipe is connected to a heat source at one end and to the header at the another end, the header being coupled with the heat exchanger to provide the heat flow, and the heat exchanger being fitted at the inner portion of the trapezoidal basin to heat the sub-soil brine.

Abstract: The invention discloses the design of an improved household solar still with enhanced output and high recovery. The output and recovery are enhanced by (i) aligning the top glass and basin so as to maximize the input solar radiation, (ii) using North-South reflectors in V trough configuration to further raise the incident radiation, (iii) employing metallic condensers on sides to maximize condensation efficiency, (iv) using suitably heated and cooled saline water by taking advantage of ambient temperature differential during a day and using such water as feed water and condenser water respectively. Use of detachable top glass assembly and teflon cork at the bottom allow for easy cleaning of the interior of the still and discharge of concentrate, respectively. The still is also demonstrated to be useful for other applications where, besides producing distilled water, the concentrate is a more value added product than the feed.

Abstract: A desalination unit for production of potable water from sub-soil brine including in combination a trapezoidal basin, a condenser, a feed tank, a header, a heat exchanger, a flush valve, a sprinkling system, exhaust heat pipe and water collecting channel; where the exhaust heat pipe is connected to a heat source at one end and to the header at the another end, the header being coupled with the heat exchanger to provide the heat flow, and the heat exchanger being fitted at the inner portion of the trapezoidal basin to heat the sub-soil brine.