Experimental study to enhance the productivity of single-slope single-basin solar still

Abstract

Existence of potable water is considered as one of the important issues that are related to the survival of human life, especially in fresh water scarce areas. So, it is necessary to find a solution to this problem. In the current work, the productivity of fresh water in conventional single-slope single-basin solar still is increased by using two modification methods. The first method is reflecting the solar ray to the still basin by using aluminum foils that are pasted on the interior surfaces of the still walls. This method will enhance the fallen solar rays on basin water and reduce heat losses. The second method increases the evaporation surface area by introducing blackened stainless steel balls with different diameters at the still basin. Balls of two diameters chosen: 5 and 10 mm. The experimental results show that the productivity of solar still with 10 mm-diameter balls is higher than that of the conventional solar still by 38.07%. The corresponding values of the stills with 5 mm-diameter balls and aluminum foils are 31.41 and 14.87%, respectively. The thermal efficiency of the highest productivity solar still is 27.81%. Other stills are characterized by lower thermal efficiencies by various rates.

Improved solar still productivity using PCM and nano- PCM composites integerated energy storage

“…The productivity of the solar still defined as the difference between the productivity of modified distiller and conventional distiller divided by the productivity of the conventional distiller 31 . …”

“…Sarparaju.et.al utilized a 1 mm-thick copper sheet to fabricate an absorber basin measuring 100 cm × 60 cm × 5 cm (0.6 m 2 absorber area) 30 . In another study Hyder et al 31 the inner basin dimensions were 100 cm × 100 cm, with varying heights of 528 mm (higher side) and 60 mm (lower side). Their still incorporated a condensing surface made of a 4 mm-thick window-type glass 31 .…”

“…In another study Hyder et al 31 the inner basin dimensions were 100 cm × 100 cm, with varying heights of 528 mm (higher side) and 60 mm (lower side). Their still incorporated a condensing surface made of a 4 mm-thick window-type glass 31 . In comparison, our solar still measures 1060 mm in length and 1774 mm in width, with a height ranging from 135 mm at the front to 404 mm at the back.…”

Design and implementation of an advanced solar water distillation system for the efficient purification of contaminated water into clean drinking water

“…The basin is placed on a sand layer (2 cm) to store the additional heat and insulated with 5 cm thick polystyrene to reduce heat losses (Senavirathna, Weerasinghe, Maier and Rosemann, 2011). Additionally, fifteen sponge cubes (6 cm× 6 cm× 3 cm) are placed in the basin to increase the wet surface area and decrease the surface tension of water (Abu-Hijleh and Rababa, 2003;Diabil, 2022). Figure 3 illustrates the arrangement of the solar still.…”

Experimental investigation on the performance of a pyramid solar still for varying water depth, contaminated water temperature, and addition of circular fins

“…Figure 1 illustrates the schematic view of the conventional solar still. This pyramid solar still has three layers of insulation made of glass covers sandwiched between an interior structure made of galvanized iron sheet and an exterior layer made of galvanized iron sheet (Diabil, 2022). The depth of the glass plate is 7 mm, the height is 30 cm, the width is 65 cm and the slope angle is 35°.…”