43. Design and Development of Composite Solar Water Heater cum Distillation unit for Domestic Use

Composite solar unit of solar water heater cum distillation device (SWHD) was designed and developed for domestic use. Such composite solar unit was developed to obtain hot water and distilled water simultaneously. Solar water heater cum distillation device was tested for full load condition in winter and summer to find out its performances. In solar water heater cum distillation unit the maximum temperatures of water in storage tank were 48.68 ^OC and 58.28 ^OC in winter and summer respectively. Total distilled water in 24 hours produced from SWHD in February 2004 and April 2004 was 5007 ml/m²/day and 5275 ml/m²/day respectively. Efficiency of SWHD for winter and summer was found to be 36.70%, 27.65% for solar water heater, 49.55%, and 43.97% for distillation in winter and summer seasons. The total cost of SWHD worked out to be Rs. 8930/-.