THERMAL SCIENCE

International Scientific Journal

Arvind A. Kapse

,

Prashant Dongarwar

,

Rupesh Gawande

THERMOHYDRAULIC PERFORMANCE COMPARISION OF COMPOUND INSERTS FOR A TURBULENT FLOW THROUGH A CIRCULAR TUBE

ABSTRACT
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.
KEYWORDS
turbulent flow, compound insertion, heat transfer
PAPER SUBMITTED: 2015-10-27
PAPER REVISED: 2015-12-26
PAPER ACCEPTED: 2016-04-09
PUBLISHED ONLINE: 2016-05-08
DOI REFERENCE: https://doi.org/10.2298/TSCI151027096K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 3, PAGES [1309 - 1319]
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Thermohydraulic performance comparision of compound inserts for a turbulent flow through a circular tube

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence