Design, Construction and Performance Comparison of Two Solar Stills Having Different Absorber Design
Productivity enhancement of solar stills has been one of the main goals of researchers. In this study, two designs of solar stills absorber plate were conceptualized and developed and their effects on the productivity process were investigated experimentally. A solar still using a submerged flat absorber plate and another solar still without any submerged absorber plate were designed and constructed. The designs were developed by virtue of the comparative analyses to be carried out. The two still designs were tested under the same conditions. Comparatively, more distilled water was obtained from the solar still without submerged plate at 10litres of inlet raw water during the first day of experiment while the still with submerged flat absorber had more distillate during the second and third day of the experiment with 20 and 30 liters inlet raw water respectively. The efficiencies were 82.35 % and 83.30 % on the first day of experiment, 82.99% and 82.56% on the second day of experiment and 83.82% and 81.98% on the third day of experiment for still with submerged flat plate absorber and still without submerged flat plate absorber respectively.