%0 Journal Article %T Economic and environmental impacts of thermal insulation used in different duct sizes %A Kumar, D. %A Kumar, S. %A Bhayo, B.A. %A Harijan, K. %A Uqali, M.A. %J Journal of Thermal Engineering %D 2020 %V 6 %P 141-156 %R 10.18186/thermal.672085