Albaldawi RA, Shyaa AK, Hammendy BM. Experimental Study on the Effect of Insertion of Copper Lessing Rings in Phase Change Material (PCM) on the Performance of Thermal Energy Storage Unit. alkej [Internet]. 2015 Dec. 31 [cited 2026 Jan. 4];11(4):60-72. Available from: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/265