@Article{fdmp.2022.018938,
AUTHOR = {M. Gh. Mohammed Kamil, M. S. Kassim, R. A. Mahmood, L. AZ Mahdi},
TITLE = {Modeling of Heat Transfer and Steam Condensation Inside a Horizontal Flattened Tube},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {18},
YEAR = {2022},
NUMBER = {4},
PAGES = {985--998},
URL = {http://www.techscience.com/fdmp/v18n4/47298},
ISSN = {1555-2578},
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/m<sup>2</sup>.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/m<sup>2</sup>.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/m<sup>2</sup>.s.},
DOI = {10.32604/fdmp.2022.018938}
}