Dange Bharat S. and Agrawal Surendra (2017) “Experimental study of passive heat transfer enhancement technique with the help of various factor by using twisted tape insert inside a tube in tube heat exchanger”, International Journal of Advance Research in Engineering, Science & Technology, 4(4), pp. 658–667. Available at: https://ijarest.org/index.php/ijarest/article/view/1282 (Accessed: 3 July 2025).