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http://dx.doi.org/10.7836/kses.2016.36.2.041

Experimental Study on the Thermal Performance of a Domestic Solar Air Heater with Protruding Triangular Openings on the Absorber Plate  

Kim, Hyun Gon (Department of Aerospace and Mechanical Engineering, Graduate school, Korea Aerospace University)
Boo, Joon Hong (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of the Korean Solar Energy Society / v.36, no.2, 2016 , pp. 41-51 More about this Journal
Abstract
A solar air heater was designed for supplementary domestic heating. The absorber plate had a series of protruding notches which had triangular openings on the front surface of the absorber plate to direct partial air flow to the rear surface and to enhance the convective heat transfer to the flowing air. The height of the opening as well as the opening configuration was determined by preceding numerical simulations. The experimental model had an absorber plate of 0.78-m width and 1.0-m length which was coated with black paint. The air temperature increased as much as $18^{\circ}C$ for $90-m^3/h$ flow rate when the absorber plate was inclined by $45^{\circ}$ for a clear-day solar irradiation of about $906W/m^2$. The collector efficiency ranged from 69 to 74%. Considering the simplicity of the structure and low manufacturing cost, the solar air heater might have competence as an auxiliary heating device for domestic use. On-site experimental results are presented with discussion for various solar irradiations and air flow conditions.
Keywords
Solar air heater; Absorber plate; Protruding openings; Selective solar coating; Temperature rise; Collection efficiency;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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