Performance analysis of a 'V' type solar still using a charcoal absorber and a boosting mirror

摘要

The thermal performance of a "V" type solar still with a charcoal absorber is analysed and distilled water collection output is estimated. The internal heat transfer and external heat transfer modes are studied. The efficiency of the still is estimated under four ways. The overall efficiency of the still is 24.47% without charcoal, 30.05% with charcoal, 11.92% with boosting mirror and 14.11% with boosting mirror and charcoal. The performance ratio of the still, variation of the Nusselt number (Nu) and the Grashof number (Gr) are presented. The experimental properties of the still are also estimated. The experimental data for the four studies under similar climatic conditions are compared. The main advantage of the "V" type solar still is due to centre collection and all the condensation are easily directed to the outlet. So the distilled yield is collected without any hindrance.