Prof. Dr. Zena Khalefa Kadhim, B. G. R. A. (2021) “Enhancement the Heat Transfer Rate of a counter flow heat exchanger by Using Longitudinal Fins With Different Cross-sections and Heights”, Design Engineering, pp. 9273-9285. Available at: http://www.thedesignengineering.com/index.php/DE/article/view/5971 (Accessed: 2May2024).