Determination of air side heat transfer coefficient in a mini-channel heat exchanger using Wilson Plot method

K. K. Thoo, W. M. Chin, M. R. Heikal

Research output: Contribution to conferencePaper

Abstract

In this study, the air side heat transfer coefficient of an aluminium mini-channel heat exchanger was investigated for single-phase flow in the mini-channel, with water in the tubes and air on the outside. Research methods included hydraulic tests on a single mini-channel tube, Wilson Plot experiments and experiment validation. Results obtained from the hydraulic test showed that turbulent flow occurred in the tube at a Reynolds number of 830. Wilson Plot experiments were conducted to determine air side heat transfer coefficient of the heat exchanger. The tube side Reynolds number was maintained above 1000 to ensure turbulent flow and tube side heat transfer coefficient was calculated using Gnielinski equation for turbulent flow. The air side heat transfer coefficients obtained from the Wilson Plot experiments were in good agreement with known correlations. The outcome of this study is to use the air side heat transfer coefficient to calculate the performance of refrigerant condensers for different tube pass ratios and flow pass configurations.

Original languageEnglish
DOIs
Publication statusPublished - 1 Dec 2013
Event2nd International Conference on Mechanical Engineering Research, ICMER 2013 - Kuantan, Pahang, Malaysia
Duration: 1 Jul 20134 Jul 2013

Conference

Conference2nd International Conference on Mechanical Engineering Research, ICMER 2013
CountryMalaysia
CityKuantan, Pahang
Period1/07/134/07/13

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    Thoo, K. K., Chin, W. M., & Heikal, M. R. (2013). Determination of air side heat transfer coefficient in a mini-channel heat exchanger using Wilson Plot method. Paper presented at 2nd International Conference on Mechanical Engineering Research, ICMER 2013, Kuantan, Pahang, Malaysia. https://doi.org/10.1088/1757-899X/50/1/012024