Title: Energy and exergy analyses of passive solar still augmented with nanoparticles

Authors: Vikas Kumar Thakur; Manoj Kumar Gaur

Addresses: Department of Mechanical Engineering, Madhav Institute of Technology and Science, Gwalior, 474005, M.P., India ' Department of Mechanical Engineering, Madhav Institute of Technology and Science, Gwalior, 474005, M.P., India

Abstract: The paper presents the comparative energy and exergy analyses of passive solar still (SS) with two different nanoparticles and without nanoparticles. The analytical expressions of condensing cover, base fluid, and basin liner temperature are developed for both the cases. The daily yield of the SS with plain water, ZnO and CuO nanofluid is 1,620, 2,305 and 3,365 mL/m² respectively. The diurnal energy efficiency with CuO nanofluid is 26.56% and 39.14% higher than the ZnO nanofluid and plain water respectively. Moreover, the diurnal exergy efficiency with CuO nanofluid is 42.67% and 107.76% more than SS with ZnO and without nanofluid respectively.

Keywords: solar still; distillation; energy efficiency; exergy efficiency; nanoparticles.

DOI: 10.1504/IJEX.2022.126824

International Journal of Exergy, 2022 Vol.39 No.4, pp.339 - 360

Received: 05 Sep 2021
Accepted: 19 Mar 2022
Published online: 08 Nov 2022 *

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