Desalination and Water Treatment, ( ISI ), Volume (50), No (3), Year (2012-12) , Pages (387-396)

Title : ( Estimation of convective heat transfer coefficient in a single-slope solar still: a numerical study )

Authors: Nader Rahbar , Javad Abolfazli Esfahani ,

Access to full-text not allowed by authors

Citation: BibTeX | EndNote

The intention of this work is to investigate the natural convection effect in a 2-D single-slope solar still. The flow is assumed as steady, laminar, and incompressible ideal gas. A numerical model based on SIMPLEC algorithm is used for the solution of mass, momentum, energy, and concentration equations. The solutions are performed for several values of aspect ratio and Rayleigh number between 2.5 and 5.5 and between 5106 and 5107, respectively. Moreover, a new correlation for estimating the convective heat transfer coefficient has been obtained, which has a good agreement with published well-known models. The results show that, for a given aspect ratio, Rayleigh number has a direct effect on Nusselt number. On the other hand, for a fixed Rayleigh number, the value of Nusselt number decreases when the aspect ratio increases. Furthermore, it is found that the maximum heat transfer coefficient is in the area where flow directed downward from glass to water.

Keywords

, CFD study; Single, slope solar still; Convective heat transfer coefficient; Aspect ratio; Rayleigh
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@article{paperid:1035424,
author = {Rahbar, Nader and Abolfazli Esfahani, Javad},
title = {Estimation of convective heat transfer coefficient in a single-slope solar still: a numerical study},
journal = {Desalination and Water Treatment},
year = {2012},
volume = {50},
number = {3},
month = {December},
issn = {1944-3994},
pages = {387--396},
numpages = {9},
keywords = {CFD study; Single-slope solar still; Convective heat transfer coefficient; Aspect ratio; Rayleigh number},
}

[Download]

%0 Journal Article
%T Estimation of convective heat transfer coefficient in a single-slope solar still: a numerical study
%A Rahbar, Nader
%A Abolfazli Esfahani, Javad
%J Desalination and Water Treatment
%@ 1944-3994
%D 2012

[Download]