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Abstract
The proper installation of a solar still can reduce the heat loss from the basin to ambient and significantly increase the still efficiency. In this case, the use of a dye resulted in minimal improvement in still efficiency. The reduction in the water emissivity will reduce the radiation heat transfer from water to glass. This resulted in a substantial improvement in still efficiency and offers great potential for solar still usage. The two methods above are mutually exclusive and could be used concurrently for best results. The numerical predictions reported agree favorably with the most recently published experimental work in a similar configuration.