Abstract
Abstract In the present experimental study, a traditional single-basin still and single-basin still with high thermal conductivity sensible storage materials was designed, manufactured and operated in the same weather conditions, to illustrate the influence of high thermal conductivity sensible storage materials (graphite) on the thermal performance of a single-basin still. The high thermal conductivity sensible storage materials (graphite) works as an energy source to basin within the times of lower intensity of solar radiation and also after sunset. The graphite used in the present study is more effective than the other sensible storage materials used in the previous studies such as (sand, black gravel, and glass balls), mainly due to the high thermal conductivity of graphite and the graphite properties used in this study in Table 1 . The experimental results showed that the daily production of a single-basin still with graphite is bigger than that of a traditional single-basin still. The daily production up to almost 7.73 l/m2 day for single-basin still with graphite while its value was registered 4.41 l/m2day for traditional single-basin still. The single-basin still with graphite as a sensible storage material is better in daily production (74.89%–80.05% increasing) compared to a traditional single-basin still. Additionally, the daily efficiency range between 33.41 and 34.6% for traditional single-basin still and 59.9–60.54% for the single-basin still with graphite as a high thermal conductivity sensible storage materials.
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