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Effect of Air Flow on Tubular Solar Still Efficiency

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Author(s): Arunkumar Thirugnanasambantham | Jayaprakash Rajan | Amimul Ahsan | Vinothkumar Kandasamy

Journal: Iranian Journal of Environmental Health Science & Engineering
ISSN 1735-1979

Volume: 10;
Issue: 4;
Start page: 31;
Date: 2013;
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Keywords: Compound Parabolic Concentrator | Desalination | Tubular Solar Still

ABSTRACT
An experimental work was reported to estimate the increase in distillate yield for a compound parabolic concentrator-concentric tubular solar still (CPC-CTSS). The CPC dramatically increases the heating of the saline water. A novel idea was proposed to study the characteristic features of CPC for desalination to produce a large quantity of distillate yield. A rectangular basin of dimension 2 m × 0.025 m × 0.02 m was fabricated of copper and was placed at the focus of the CPC. This basin is covered by two cylindrical glass tubes of length 2 m with two different diameters of 0.02 m and 0.03 m. The experimental study was operated with two modes: without and with air flow between inner and outer tubes. The rate of air flow was fixed throughout the experiment at 4.5 m/s. On the basis of performance results, the water collection rate was 1445 ml/day without air flow and 2020 ml/day with air flow and the efficiencies were 16.2% and 18.9%, respectively.Findings:The experimental study was operated with two modes: without and with air flow between inner and outer tubes. The rate of air flow was fixed throughout the experiment at 4.5 m/s.Conclusions:On the basis of performance results, the water collection rate was 1445 ml/day without air flow and 2020 ml/day with air flow and the efficiencies were 16.2% and 18.9%, respectively.

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