Ali, Hussein Hayder Mohammed, and Fatima Tahir. “Enhancing the Efficiency of the Double-Tube Heat Exchanger by Using a Twisted Inner Tube”. Advances in Mechanical and Materials Engineering 40, no. 1 (September 11, 2023): 159-170. Accessed November 24, 2024. https://journals.prz.edu.pl/amme/article/view/1378.