%0 Journal Article %T Experimental investigation of a low-cost evacuated tube in a parabolic trough collector with and without porous insert %A RAVAL, P. %A RAMANI, B. %A MOTWANI, K. %A CHOTAI, N. %J Journal of Thermal Engineering %D 2026 %V 12 %P 519-531 %R 10.14744/thermal.0001099