Performance analysis of solar still with cow dung cakes and blue metal stones

Abstract

The aims of this paper is to investigate the effects of various materials inside the solar still on the increase of the productivity of potable water. Here, blue metal stones and cow dung cakes were used as materials.To investigate their effect, three identical solar stills with an effective area of 1 m square made from locally available materials were tested in climate conditions of Mehsana (23°50′ N 72°23′). The first and second solar stills were filled with blue metal, stones and cow dung cakes, while the third one was taken as a reference which consisted of only blue paint at the basin. The experiments show that blue metal stones have the highest distillate output at daytime, followed by cow dung cakes solar still and reference solar still. On the other hand, the overall distillate output of blue metal stones and cow dung cakes at daytime as well as at night were 35% and 20% compared with that of reference solar still.

Combined effects of composite thermal energy storage and magnetic field to enhance productivity in solar desalination

“…Lauric acid gave better yield as compared to myristic acid 16. [43] Sensible heat energy storage dry cow dung 35% increase in the daily yield 17. [44,45] Sensible heat energy storage…”

“…Many sensible heat energy storage materials (Fig. 1) were used by researchers from the year 1981 to 2020, including jute cloth [28], black rubber mat [29], black gravel [30], aluminium plates [31,32], charcoal granules [33], packed glass ball [34], granite [35], sponges [36,37], fins [38], sand [39], black rocks [40], dried sand [41], vertical jute cloth [42], dry cow dung [43], thermic fluid [44,45], bamboo cotton [46], marble pieces [47] and fins [48]. In recent years (i.e.…”

Applications of Heat Exchanger in Solar Desalination: Current Issues and Future Challenges

“…Fathy et al [30] experimented using a fixed and movable PTC with a double-slope still to enhance distillate productivity. Panchal [31] conducted an experiment using energy storage materials, such as metal stones and cow dung, and obtained better results. Panchal [32] reviewed different thermal energy storage materials such as black rubber, stones, ink, dyes, charcoal particles, jute wicks, etc.…”

Experimental and economic analysis of energy storage‐based single‐slope solar still with hollow‐finned absorber basin

“…It was found that the solar still with Fresnel lens enhanced the yield by 26.64%, whereas the addition of blue stones to the solar still with Fresnel lens enhanced the yield by 35.55%. Panchal 42 studied the effect of blue stones and cow dung on the freshwater productivity of a solar still. It was reported that the productivity of solar still with blue stones and cow dung as energy storage materials was improved by 35% and 20%, respectively, when compared with CSS.…”