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Theoretical approach of condensation for solar still.


Citation

Ahsan, Amimul and Imteaz, Monzur A. and Alam, Md. Zahangir and Haque, A. A. Mokammel and Ghazali, Abdul Halim (2012) Theoretical approach of condensation for solar still. In: Water Condensation : Processes, Modeling and Control. Nova Science Publishers, New York, pp. 137-158. ISBN 9781613248744; 1613248741

Abstract / Synopsis

Solar water distillation might be one of the viable options for providing drinking water for a single house or a small community in an arid, remote or coastal region. A new type of solar distillation called a Tubular Solar Still (TSS) was designed to overcome some disadvantages in the maintenance and management of a basin type still. A production model of a TSS based on a film-wise condensation theory that takes into account of thermal resistance in unsaturated humid air inside the still is presented in this chapter. The condensation coefficient due to thermal resistance is inversely proportional to the dry air pressure fraction. In the present model, the overall heat transfer coefficient between the humid air inside the still and the ambient air outside the still is used for the first time because the measurement of the ambient air temperature is easier to obtain than the inner surface temperature of the tubular cover. The analytical solution of this condensation theory could provide a good agreement with the observed production flux obtained from the field experiment and proves that the model can be used to precisely predict the production flux. A basic theoretical approach on laminar film condensation is presented first in this chapter to facilitate readers understanding before introducing the theory of film-wise condensation for a solar still.


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Additional Metadata

Item Type: Book Section
Divisions: Faculty of Engineering
Publisher: Nova Science Publishers
Keywords: Condensation; Solar still; Theoretical approaches.
Depositing User: Suzila Mohamad Kasim
Date Deposited: 17 Mar 2014 06:47
Last Modified: 17 Mar 2014 06:47
URI: http://psasir.upm.edu.my/id/eprint/26263
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