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Investigation of boiling heat transfer and flow regimes in a heat exchanger

Sadikin, Azmahani and Jamil, Muhammad Adib and Mat Isa, Norasikin (2014) Investigation of boiling heat transfer and flow regimes in a heat exchanger. Applied Mechanics and Materials, 660. pp. 679-683. ISSN 1662-7482

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Abstract

Experimental and numerical simulation of heat transfer and flow regimes for vertical flow across horizontal tubes are presented for mass flow rate in the range 0.03 – 0.17 kg/s and heat fluxes in the range 1.07–1.35 kW/m2. The tubes had a diameter of 9.75 mm and a pitch to diameter ratio of 1.85. The CFX version 14.0 from ANSYS was used to predict the flow regimes and the temperature distribution in the tube bundles. These data and the predictions from numerical simulation were compared with the data available in the literature. It is found that the circulation zone in the shell becomes bigger as the mass flow rate is increases. The flow patterns identified in this experiment are bubbly, intermittent and annular flow. These data agrees well with the published data.

Item Type: Article
Uncontrolled Keywords: boiling; flow pattern; heat exchanger; CFD
Subjects: Q Science > QC Physics
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Plant and Automotive Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 02 Apr 2015 07:16
Last Modified: 02 Apr 2015 07:16
URI: http://eprints.uthm.edu.my/id/eprint/6423
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