Calculating the heat transfer coefficient of unsteady homogeneous oil-gas flow
Author
Source
Issue
Vol. 20, Issue 1 العلوم الصرفة و الهندسية (30 Jun. 2017), pp.433-441, 9 p.
Publisher
Publication Date
2017-06-30
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Economics & Business Administration
Abstract EN
It is important to compute the heat transfer coefficient in a phase-change flow and enhance the empirical correlations to approximate the performance in many applications.
In this work, the heat transfer coefficient of homogeneous two-phase flow with unsteady-state in vertical tube has been studied.
The model that used to predict the flow pattern and the heat transfer coefficient for various flow velocities is determined theoretically.
Some empirical relations are enrolled in order to find the fluid properties.
The results are compared with that obtained experimentally and show responsible values.
It is observed that the variation of heat transfer coefficient have been more oscillated and complicated as the flow velocity is increasing.
This behavior could not be observed if the flow assumed as single flow, especially when the fluid seems to be gas.
However, the theoretical value of void fraction has an average percentage difference ranges between (10-22) % to that obtained experimentally.
While, the theoretical value of heat transfer coefficient has an average percentage difference ranges between (10-15) % to that obtained experimentally.
American Psychological Association (APA)
Salih, Tawfiq Wasmi M.. 2017. Calculating the heat transfer coefficient of unsteady homogeneous oil-gas flow. Journal of Dohuk University،Vol. 20, no. 1 العلوم الصرفة و الهندسية, pp.433-441.
https://search.emarefa.net/detail/BIM-793434
Modern Language Association (MLA)
Salih, Tawfiq Wasmi M.. Calculating the heat transfer coefficient of unsteady homogeneous oil-gas flow. Journal of Dohuk University Vol. 20, no. 1 Pure and Engineering Sciences (Jun. 2017), pp.433-441.
https://search.emarefa.net/detail/BIM-793434
American Medical Association (AMA)
Salih, Tawfiq Wasmi M.. Calculating the heat transfer coefficient of unsteady homogeneous oil-gas flow. Journal of Dohuk University. 2017. Vol. 20, no. 1 العلوم الصرفة و الهندسية, pp.433-441.
https://search.emarefa.net/detail/BIM-793434
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 440-441
Record ID
BIM-793434