CFD Analysis of Jet Plate Solar Air Heater for Heat Transfer Enhancement

Nayak, Arvind and Irani, Azalea and Manjunath, M S (2015) CFD Analysis of Jet Plate Solar Air Heater for Heat Transfer Enhancement. In: International Conference on Current Advances in engineering and Technology, 08/11/2015, Pune.

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Flat plate solar air filters are typically associated with low thermal performance owing to high heat losses and poor thermal characteristics of air, which is the working fluid. In this paper, a two dimensional numerical analysis of flat plate solar collector fitted with jet plate is carried out to determine its performance enhancement capability using the available CFD code. The design parameters considered in the analysis are the jet plate hole diameter, the length of the jet plate, the spacing of the jet plate below the absorber plate and the pitch of the jet plate holes. The nozzle diameter and nozzle hole pitch are fixed at 2.5 mm and 42.5 mm respectively. The spacing of the nozzle plate is varied as 5 and 15mm. The jet plate length ratio is varied in the range of 0.25-1 and the mass flow rate is varied corresponding to the Reynolds number range of 4000 to 20,000. It is found that the jet plate with spacing of 15mm and jet plate length ratio less than 0.5 provides improved thermal performance and the maximum enhancement in Nusselt number is found to be about 22% as compared the smooth duct

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Jet plate, CFD, Solar air heater, Nusselt number
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 28 May 2016 13:49
Last Modified: 28 May 2016 13:49

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