V. S. Hans, S. Singh, and R. S. Gill, “Thermal and Thermo-hydraulic Performance of Packed Bed Solar Air Heater”, JAE, vol. 51, no. 1, Oct. 2014, Accessed: Jun. 06, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/JAE/article/view/44414