TITLE

Augmentation of Single Basin and Pyramid Still Desalination Using Common Biomass Heat Source and Analytical Validation Using RSM

AUTHOR(S)
Rajan, A. Senthil; Raja, K.; Muthu, P. Mari
PUB. DATE
July 2014
SOURCE
Australian Journal of Basic & Applied Sciences;Jul2014, Vol. 8 Issue 10, p212
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Solar desalination is one of the methods to produce fresh water from saline water. The productivity of single basin still is very low compared to other desalination methods. Objective: From the previous researcher works it is found that the productivity of the still is depends on increase in temperature of the saline water, area of the basin and decrease in depth of water. The main objective of this work is a pyramid solar still and single basin solar still are coupled with a common biomass heat source to enhance the productivity. In the single basin, pyramid stills heat exchangers are placed at the bottom of the basin area. The heat exchanger is connected to a common biomass boiler heat source to receive heat energy. This arrangement increases the water temperature in the stills and also increases the productivity in the still Biomass used in the heat source is eco friendly. Experiments are conducted in solar and biomass modes with various water depths, sensible, latent heat, evaporative materials placed in both the stills and the results are analyzed using RSM software. A conventional still is fabricated and run parallel with the experimental setup for comparison. Results: It was found that 2cm water depth produces maximum output. Use of seashell as solid sensible heat storage materials in the still improves productivity by 72% than conventional still. The use of sponge as evaporative surfaces increases the area of exposure and still productivity by 68% the use of wax as latent heat materials increases 54%productivity than conventional still. Conclusion: From the overall observation it is found that maintaining lower depth of water in the basin increases the productivity and maximum output is achieved when biomass heat source is used instead of solar mode. The introduction of sensible heat storage materials increases the overall productivity in the still.
ACCESSION #
97368481

 

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