Dange Bharat S. and Agrawal Surendra (2017) “Experimental study of passive heat transfer enhancement technique by using twisted tape insert inside a tube in tube heat exchanger”, International Journal of Advance Research in Engineering, Science & Technology, 4(3), pp. 34–42. Available at: https://ijarest.org/index.php/ijarest/article/view/819 (Accessed: 3 July 2025).