Experimental Research on solar still technology, a promising solution for water purification in developing countries / Nawaf Mehmood Malik
Material type:
TextIslamabad : SMME- NUST; 2026Description: 86p. Soft Copy 30cmSubject(s): MS Mechanical EngineeringDDC classification: 621 Online resources: Click here to access online
| Item type | Current location | Home library | Shelving location | Call number | Status | Date due | Barcode | Item holds |
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Thesis
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School of Mechanical & Manufacturing Engineering (SMME) | School of Mechanical & Manufacturing Engineering (SMME) | E-Books | 621 (Browse shelf) | Available | SMME-TH-1207 |
Water scarcity is a major problem, which the world is facing at the present moment.
Most of the earth’s water is saline, comprising about 97 %. Solar still is a very economical
and easy method for water desalination. This experimental research was conducted to
enhance the output of square pyramid type solar still incorporating PCM (paraffin wax)
and Fresnel lenses concentrating sunlight on bricks placed in basin area. Effect of hot water
circulation in PCM was also observed on solar still distillate output enhancement.
Experiments were conducted at different water depth levels (i.e., 1, 2, 3 and 4 cm) in
Islamabad, Pakistan. Nocturnal output was observed to increase by using Fresnel lenses.
Solar still output was observed to increase from 1 cm to 3cm in nocturnal hours and then
started to decrease. When Fresnel lens was used, maximum distillate output in autumn and
spring season was 0.9 L and 1.68 L at 1 cm water depth. Maximum distillate in simple
experimental cases (without Fresnel lens utilization) was also at 1cm water depth. In
autumn season it was 0.85 L and in spring 1.55 L. Circulation of hot water in PCM chamber
increased both daytime and nocturnal output of solar still significantly
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