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On the characteristics of multistage evacuated solar distillation

Ahmed, Mirghani Ishak and Hrairi, Meftah and Ismail, Ahmad Faris (2009) On the characteristics of multistage evacuated solar distillation. Renewable Energy, 34. pp. 1471-1478. ISSN 0960-1481

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Abstract

This paper proposes a new multistage evacuated solar distillation system that was designed to increase the productivity and improve the efficiency of the simple solar still. The solar still works by virtue of the higher evaporation rate under vacuum conditions. A mathematical model for the system was developed and used to optimize the system design. Fluent software was used to simulate the simultaneous heat–mass processes of the still. NASTRAN software was used for the structural analysis. The system components were fabricated and the overall system was assembled. The preliminary results showed a significant improvement of the overall productivity. Indeed, the total productivity of the solar still is affected very much by changing the internal pressure. The productivity decreased as the pressure increased due to the lower evaporation rates at the higher pressure values. The influence of the characteristic height variation on the still's estimated productivity was found to be very strong. As the height increases the productivity decreases significantly.

Item Type: Article (Journal)
Additional Information: 2426/1020
Uncontrolled Keywords: Solar desalination; Solar still; Multistage distillation; CFD; Finite element analysis
Subjects: T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Mrs. Wan Salwati Wan Salleh
Date Deposited: 18 Jul 2011 12:06
Last Modified: 18 Jul 2011 12:06
URI: http://irep.iium.edu.my/id/eprint/1020

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