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

Article

Kamil, M. Gh. Mohammed, Kassim, M. S., 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. https://doi.org/10.32604/fdmp.2022.018938
Article Title

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

Article CategoryArticle
AuthorsKamil, M. Gh. Mohammed (Author), Kassim, M. S. (Author), Mahmood, R. A. (Author) and Mahdi, L. AZ (Author)
Journal TitleFluid Dynamics & Materials Processing
Journal Citation18 (4), pp. 1-14
Number of Pages14
Year2022
PublisherTech Science Press
Place of PublicationUnited States
ISSN1555-256X
1555-2578
Digital Object Identifier (DOI)https://doi.org/10.32604/fdmp.2022.018938
Web Address (URL)https://www.techscience.com/fdmp/v18n4/47298
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.

KeywordsCondensation; flow pattern structure; heat transfer rate; flow in horizontal pipe; flow behaviour; EES modelling
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020401706. Numerical modelling and mechanical characterisation
Institution of OriginUniversity of Southern Queensland
Byline AffiliationsMustansiriyah University, Iraq
School of Mechanical and Electrical Engineering
University of Technology, Iraq
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