Theoretical Study of the Effect of Water Basin Shape on Productivity of Tubular Solar Still

Abstract

  Present work, studies effect of basin shape on productivity of tubular solar still (TSS). Basin works as solar energy absorber to transfer this energy to saline water by diffusion (conduction and convection). After absorbing the energy, water transforms into vapor to condensate on the outer cover of TSS. In present work, shape of the basin modified into four cases taken here to increase solar energy absorption and inside water convection. This led to increase the productivity of fresh water to reach maximum value of 47% than regular basin. This is a passive method of modification of water productivity, which applied easily in practical applications