TY - JOUR
TI - Thermohydraulic performance comparision of compound inserts for a turbulent flow through a circular tube
AU - Kapse Arvind A
AU - Dongarwar Prashant
AU - Gawande Rupesh
JN - Thermal Science
PY - 2017
VL - 21
IS - 3
SP - 1309
EP - 1319
PT - Article
AB - Heat transfer and pressure drop characteristics of three different passive inserts are experimentally investigated for individual and compound insertion. Insert cross-section is altered along the length of test section for compound insertion. Test runs were conducted in a concentric circular tube in tube heat exchanger in the Reynolds number range of 8000 to 32000 with water as a working fluid. Enhancements in Nusselt number and friction factors are reported to be in the range of 38-234% and 55-524%, respectively, over plain tube. The average performance ratios based on equal pumping power are also reported and found in the range of 0.63-1.53. Based on experimental results, optimum combination for compound insertion is proposed.