Performance Exploration of Impinging Jet Solar Air Heater: A Comparative Study

Given the imminent depletion of fossil fuels, the present scenario relies on capturing solar energy. The current study compares experimental trials of traditional SAH with alternative impinging jet ribbed solar air heater designs. The experimental investigation is investigated by increasing the Re from 4000 to 16,500 and comparing the results. The geometric parameters and jet parameters used in the investigation were e/dhd = 0.043, P/e = 10, α = 55°, Xst/dhd = 0.40, Ysp/dhd = 0.84, and dj/dhd = 0.064. The impinging jet with multi-V-shaped ribs outperformed the V-shaped ribbed SAH, with a reported thermohydraulic efficiency of 3.301 compared to 2.05 for the V-shaped ribbed SAH and 1.83 for the impinging jet flat-plate solar air. It establishes that when active and passive heat transfer approaches are coupled, heat transfer enhancement and THEP are increased. The findings were also compared to traditional SAH.