Abstract
Solar chimney technology has received considerable attention in recent years as it offers suitable thermal comfort at the desired space and involves no running cost and harmful emissions. The heat transfer and ventilation performance of the solar chimney greatly depend on the configuration of the absorber plate. Thus, the present paper numerically investigates the effect of variations in geometrical configurations of the wavy absorber plate such as the number of waves, wave amplitude, inclination angle of the chimney, inclination angle of the glass plate, and air gap. The numerical analysis suggested optimum number of waves to be 10 (Nu = 210), optimum inclination of the chimney to be 55° (Nu = 220), and optimum wave amplitude to be 6.25 cm (Nu = 232). However, no optimum values were obtained for variations in glass plate inclination and the air gap. The inverted T plate surface geometry (Nu = 252–257) delivered the highest enhancement in heat transfer performance relative to other surface geometries. Correlations have been developed for the performance parameters by performing several numerical experiments and the proposed mass flow rate correlation predicts 91.3% of the data within ±7%, whereas, the Nusselt number correlation predicts 93.47% of the data within ±7%.
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