Abstract
This study presents experimental examination of the potable water production rate of two kind of solar stills, one with a single sloping arrangement (SSl) and the other with a square pyramid (SPy) construction, to determine the effect of combining phase changing material (PCM). The commercially available candle making grade paraffin was used as the PCM. The operative factors, including temperature of the basin water, atmospheric temperature, glass surface temperature, and output water yield, have been evaluated in the performance assessment. To assess the still's distilling capability in the same environmental circumstances with the consistent 35 mm water level, a comparison was performed between the plain SSl (P-SSl), plain SPy (P-SPy), PCM-filled SSl (PCM-SSl), and PCM-filled SPy (PCM-SPy) configurations. Compared to rest of the stills, the PCM-SPy solar still produced the highest yield of potable water in experiments.
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