Performance of multiple effect diffusion stills

Experimental testing of a three-effect diffusion still is carried out. The experiment is designed to test the effect of the heating fluid temperature input to the still T h and the feed rate of desalinated water to the still F on the performance of the still. The results produced several empirical r...

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Bibliographic Details
Published in:Desalination 1984, Vol.51 (2), p.183-199
Main Authors: Elsayed, M.M., Fathalah, K., Shams, J., Sabbagh, J.
Format: Article
Language:English
Subjects:
Applied sciences
Drinking water and swimming-pool water. Desalination
Exact sciences and technology
Pollution
Water treatment and pollution
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Summary:Experimental testing of a three-effect diffusion still is carried out. The experiment is designed to test the effect of the heating fluid temperature input to the still T h and the feed rate of desalinated water to the still F on the performance of the still. The results produced several empirical relations to predict the following in terms of the T h and F: the average temperature of each effect, the rate of distillate produced by each effect, and the performance ratio of the still. In addition, a mathematical simulation is given for the n-effect diffusion still. The mathematical model is verified by comparing its results with the experimental results of the three-effect diffusion still. The model is further used to predict the performance of a ten-effect diffusion still at the following parametric conditions: various values of the dimensionless parameters N 3 and N 4, various heating medium temperatures input to the still, and various feed rates to the still.
ISSN:0011-9164
1873-4464
DOI:10.1016/0011-9164(84)85005-5