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Title of Journal: Heat Mass Transfer

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Abbravation: Heat and Mass Transfer

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Springer Berlin Heidelberg

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DOI

10.1007/s00276-013-1233-y

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ISSN

1432-1181

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Experimental investigation on heat transfer from s

Authors: Pullarao Muvvala C Balaji S P Venkateshan
Publish Date: 2017/02/13
Volume: 53, Issue: 7, Pages: 2363-2375
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Abstract

This paper reports the results of an experimental investigation of fluid flow and heat transfer carried out with square jets issuing from perforated nozzles This is accomplished by an impinging square jet on a uniformly heated plate of finite thickness 5 mm The medium under consideration is air Three different nozzle configurations are used in the study namely a single nozzle and perforated nozzles with four and nine holes which are accommodated in the same available jet area 46 mm × 46 mm This arrangement is akin to introducing a wire mesh at the nozzle exit plane The effects of dimensionless jettoplate distance 2–9 and the mass flow rate of the jet fluid on the heat transfer rate are studied Jet centerline mean velocity and turbulence intensity measurements are made with a hotwire anemometer The pressure drop across the orifice nozzle plate is measured and corresponding pumping power values are calculated A comparison of the heat transfer performance and pumping power penalty of the three nozzle configurations is done

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