Abstract
This study revolves around improving the thermal performance of impinging jet solar air heater (IJSAH) by using wire mesh of three different sizes. The wire mesh sizes were 0.5×0.5, 1.5×1.5, and 3×3 inches with nozzle diameter (Dj) equal to 3 and 6 mm and Reynolds number (Re) ranging from 4913 to 13103. The variation of Nusselt number (Nu), friction factor (f), thermo-hydraulic performance parameter (THPP), and effective efficiency (ηeff) were evaluated for varying Re. Maximum Nu was developed for case 3 and equalled 109.86, which was 7.3 % and 246 % higher than a smooth IJSAH and flat plate solar air heater (FPSAH), respectively. The minimum friction factor attained equated to 0.0314 for case 2 at Re = 13103. Maximum THPP attained by the setup equalled 1.78 for case 4, having Dj = 6 mm. The THPP attained by case 4 across the range of Re was on an average 9.15 % higher when compared to smooth IJSAH with Dj = 3 mm. Additionally, the system achieved maximum ηeff of 0.53695 at Re = 4913 for case 4. Finally, it was recommended to use a wire mesh having a mesh size equal to 1.5×1.5 inch with Dj = 6 mm for optimum performance.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
