Influence of fin density on the performance of an impinging jet with fins type solar air heater

Abhishek Kumar Goel () and S. N. Singh
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Abhishek Kumar Goel: IIT(ISM)
S. N. Singh: IIT(ISM)

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2020, vol. 22, issue 6, No 45, 5873-5886

Abstract: Abstract In this paper, the augmentation in the performance of a solar air heater by using impinging jet mechanism with fins has been presented. The experiments have been performed on a solar air heater in which the fins are attached inferior to the absorber plate, and parallel to this a jet plate is assembled inside the duct. The objective of the present study is to analyse the major performance parameters such as fin efficiency, effectiveness, overall fin effectiveness, and thermal efficiency for a specific range of operational and geometrical parameters. The influence of jet diameter ratio, stream-wise pitch ratio, and especially fins spacing ratio on the above-mentioned performance indices has also been examined. The result shows an appreciable increment in the thermal efficiency in comparison with the simple impinging jet and smooth (conventional)-type designs. The validation of the experimental results for thermal efficiency with the analytical data reports a percentage mean deviation of (± 3.5 at ṁ = 0.056 kg s−1) which is quite satisfactory. The finding also highlights a tremendous increment obtained in all the performance criterions for a lower fin spacing ratio, jet diameter ratio and higher stream-wise pitch ratios, respectively.

Keywords: Fin efficiency; Fin spacing ratio; Air-flow rate; Effectiveness; Impinging jet with fins (IJSAHWF); Solar air heater (SAH) (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s10668-019-00455-9

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