Enhancement of the Performance of a Solar Still Desalination Unit

Document Type : Research articles

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Mechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University

Abstract

This work examines the influence of integrating a sponge layer of several densities on the performance of a solar still desalination unit (SSDU). Two identical SSDUs are constructed and tested simultaneously; one of them is used as a reference while a sponge layer is floated in the basin of the second unit. The results report that applying the sponge to the SSDU changes its operational principles and consequently changes the temperatures profiles inside the still and its corresponding performance. The maximum freshwater production and the thermal efficiency are recorded with using a floating sponge of density of 16 kg/m3, with corresponding percentage increase of +58.1% and +55.4%, respectively, when compared with the reference unit. While the freshwater productivity and the SSDUs thermal efficiency are reduced with increasing the sponge density between 16 to 35 kg/m3

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