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Title: Thermal Performance of Solar Air Heater using Jet Impingement Technique with Longitudinal Fins
Authors: Goel, A K
Singh, S N
Keywords: Thermal efficiency;Heat transfer;Jet impingement;Longitudinal Fins
Issue Date: Dec-2017
Publisher: NISCAIR-CSIR, India
Abstract: This paper presents investigation of a jet plate solar air heater designed with continuous longitudinal fins underneath the absorber plate (JPSAHCLF). Thermal efficiency and heat transfer enhancement of prototype is computed on the assumptions of steady state. Considering energy efficiency to be a strong function of geometrical parameters, the effect of collector performance indices on thermal efficiency due to changes in geometrical parameters is studied in details. The results show substantial enhancement (3- 14.7%) in thermal efficiency for Reynolds number range (3000-15000) in comparison to the other designs based on smooth duct, roughened duct and finned duct geometries. The enhancement in heat transfer for the proposed design is also found to be quite considerable. Results for thermal efficiency and heat transfer enhancement are plotted corresponding to Reynolds number, (Re = 3000-15000, W= 3 & 5cm, mass flow rate m= 0.0126-0.0675 kg/sec.m2) respectively.
Page(s): 780-784
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.76(12) [December 2017]

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