الفهرس 
Parameters influencing the productivity and performance of solar stiOnly 14 pages are availabe for public view
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Abstract
The present experimental study aims to improve the distillate water productivity of a single-basin solar still. In the present experimental work, the effect of a graphite on the distillate water productivity of a single-basin still,and also, the effect of a hybrid storage materials (mixture of paraffin wax and graphite nanoparticles) on the distillate water productivity of a single-basi
still. To illustrate this a conventional single basin solar still, single basin solar still with graphite as a thermal storage materials, and single basin solar still with hybrid storage materials was designed, manufactured and operated in the same weather conditions of Tanta city, Egypt.The graphite used in the present study is more effective than the other
thermal storage materials used in the previous studies such as(sand, black
gravel, and glass balls), mainly due to the high thermal conductivity of graphite. Also, for a mixture of paraffin wax and graphite nanoparticles, the graphite nanoparticles was added to the paraffin wax to improve the thermal properties of the hybrid storage materials. The storage materials works as an energy source to basin water within the periods of lower intensity of solar
radiation and also after sunset. The experimental results showed that the daily distillate water productivity
of a single-basin solar still with graphite is bigger than that of a conventional single-basin solar still. The daily distillate water productivity up to almos
7.73l/m2 day for single-basin solar still with graphite while its value was
registered 4.41 l/m2day for conventional single-basin solar still. The singlebasin solar still with graphite as a sensible storage material is better in daily production (74.89% - 80.05% increasing) compared to conventional singlebasin solar still. Additionally, the daily efficiency range between 33.41-34.
%for conventional single-basin solar still and 59.9-60.54 % for the singlebasin solar still with graphite as a high thermal conductivity sensible storage
materials.