Performance study of a solar still desalination system coupled with solar air heater
DESALINATION AND WATER TREATMENT(2023)
Abstract
The main aim of the present study is to enhance the output of the solar distiller using hot air pro-duced from the solar air heater (SAH). In this manuscript, two solar stills [conventional solar still (CSS) and CSS-SAH] were fabricated and researched. The performance of the CSS-SAH was exper-imentally examined at three different water depths (Wd) and compared with the CSS. The SAH act as a water heating element, the heat extracted from the SAH was sent to the basin water of the CSS. The experimental results showed that the maximum daily yield of 4.7 kg/m2 was achieved for the CSS-SAH at a minimum Wd. The CSS-SAH has produced 0.34 to 1.8 kg higher yield than the CSS. The study also has shown that CSS-SAH produced 38.3% higher yield than the CSS. The payback period of the CSS, CSS-SAH at 1.5 cm Wd, CSS-SAH at 3 cm Wd, and CSS-SAH at 4.5 cm Wd is 46, 40, 47, and 58 ds, respectively.
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Key words
Solar still,Hot air,Water,Solar collector,Copper tubes,Heat exchanger
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