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Analytical studies on drop of H-WB constants due to scaling in natural circulation flat plate solar water heater

Arunachala, U C and Sreepathi, L K and Bhatt, Siddhartha M (2013) Analytical studies on drop of H-WB constants due to scaling in natural circulation flat plate solar water heater. International Journal of Sustainable Energy. ISSN 1478-646X

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Abstract

It is observed that the performance of the natural circulation flat plate solar water heater (FSH) deteriorates faster due to scaling. This paper quantifies the effect of scaling on instantaneous efficiency as variation in Hottel-Whillier-Bliss (H-W-B) constants. The drop in a0 and a1 values with scale growth is evaluated and brought out as the H-W-B plot. The comprehensive analysis using developed software FLATSCALE reflects the deviation of circulating ratio with scale thickness. The individual and combined effect of mass flow rate and thermal resistance on the performance of FSH is also discussed.

Item Type: Article
Additional Information: © 2013 Taylor & Francis
Uncontrolled Keywords: scaling; FLATSCALE; instantaneous efficiency; H-W-B equation; circulating ratio
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 16 Mar 2013 05:36
Last Modified: 16 Mar 2013 05:36
URI: http://eprints.manipal.edu/id/eprint/79095

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