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Home  >  Volume 26 (March 2014)

31. Design and Construction of Multi Stage Solar Still by Maryam IdrisandFatima. S. Koki. Volume26, (March, 2014), pp 235 – 245.
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Multi-stage solar still was designed and constructed. Basically, it is an indirectly heated solar still incorporating a distillation unit. Experimental studies were carried out in order to evaluate the system performance. It was observed that the collector efficiency was higher than the maximum working temperature. An average value of 56% was achieved against the theoretical value of 50%. The average value of useful energy, (Q_U ) ̇ evaluated was 324.03Watts which was supplied from the solar collector to the distillation chamber. Moreover a minimum value of distillate yield recorded 22ml per day and maximum of 634ml per day out of the entire test conducted..