Modeling of Heat Transfer and Steam Condensation Inside a Horizontal Flattened Tube

Kamil, M. Gh. Mohammed and Kassim, M. S. and Mahmood, R. A. and Mahdi, L. AZ (2022) Modeling of Heat Transfer and Steam Condensation Inside a Horizontal Flattened Tube. Fluid Dynamics & Materials Processing, 18 (4). pp. 1-14. ISSN 1555-256X

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Abstract

This work investigates the steam condensation phenomena in an air-cooled condenser. The considered horizontal flattened tube has a 30 mm hydraulic diameter, and its length is a function of the steam quality with a limit value between 0.95 and 0.05. The mass flow rate ranges from 4 to 40 kg/m2.s with a saturated temperature spanning an interval from 40°C to 80°C. A special approach has been implemented using the Engineering Equation Solver (EES) to solve a series of equations for the two-phase flow pattern and the related heat transfer coefficients. A wavy-stratified structure of the two-phase flow has been found when the mass rate was between 4 and 24 kg/m2.s. In contrast, an initially annular flow is gradually converted into a wavy stratified flow (due to the condensation process taking place inside the flattened tube) when the considered range ranges from 32 to 40 kg/m2.s.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Date Deposited: 21 Apr 2022 05:35
Last Modified: 21 Apr 2022 05:35
Uncontrolled Keywords: Condensation; flow pattern structure; heat transfer rate; flow in horizontal pipe; flow behaviour; EES modelling
Fields of Research (2020): 40 ENGINEERING > 4017 Mechanical engineering > 401706 Numerical modelling and mechanical characterisation
Identification Number or DOI: doi:10.32604/fdmp.2022.018938
URI: http://eprints.usq.edu.au/id/eprint/47836

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