Optimization of thermal parameters in a double pipe heat exchanger with a twisted tape using response surface methodology

Shivakumar, . and Dinesha, P (2018) Optimization of thermal parameters in a double pipe heat exchanger with a twisted tape using response surface methodology. Soft Computing - A Fusion of Foundations, Methodologies and Applications, 22 (18). pp. 6261-6270. ISSN 1433-7479

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Abstract

In the presentwork, design of experiments has been used to study the effect of thermal parameters on heat transfer enhancement in a double pipe heat exchanger using a passive technique. A twisted tape is considered as the heat augmentation device with tape width, tape pitch and mass flow rate as the input parameters and Nusselt number (Nu) and pressure drop (�P) as the output variables. Response Surface methodology (RSM) is used to develop a mathematical prediction model. The effect of the above input parameters on Nu and �P was investigated by ANOVA analysis. It showed that both linear and interaction terms are influencing the responses. Results reveal that mass flow rate and pitch of the tape are significant for Nu, whereasmass flow rate and tape width are significant for pressure drop. In the tested range, optimum conditions for higher Nu and lower �P were determined using RSM optimizer. Optimum values of Nu and �P were obtained corresponding to a tape pitch of 20 mm, width of 3.8 mm and a mass flow rate of 0.5 kg/s with optimum values for Nu and �P being 48 and 895 Pa.

Item Type: Article
Uncontrolled Keywords: Twisted tape, Nusselt number, Pressure drop, Tape pitch, Response surface
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 05 Sep 2018 10:02
Last Modified: 05 Sep 2018 10:02
URI: http://eprints.manipal.edu/id/eprint/151912

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