A Numerical Study on the Supersonic Steam Ejector Use in Steam Turbine System
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-02-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Supersonic steam ejector is widely used in steam energy systems such as refrigeration, wood drying equipment, papermaking machine, and steam turbine.
In this paper the Computational Fluids Dynamics (CFD) method was employed to simulate a supersonic steam ejector, SST k-w turbulence model was adopted, and both real gas model and ideal gas model for fluid property were considered and compared.
The mixing chamber angle, throat length, and nozzle exit position (NXP) primary pressure and temperature effects on entrainment ratio were investigated.
The results show that performance of the ejector is underestimated using ideal gas model, and the entrainment ratio is 20%–40% lower than that when using real gas model.
There is an optimum mixing chamber angel and NXP makes the entrainment ratio achieve its maximum; as throat length is decreased within a range, the entrainment ratio remains unchanged.
Primary fluid pressure has a critical value, and the entrainment ratio reaches its peak at working critical pressure; when working steam superheat degree increases, the entrainment ratio is increased.
American Psychological Association (APA)
Cai, Lin& He, Miao. 2013. A Numerical Study on the Supersonic Steam Ejector Use in Steam Turbine System. Mathematical Problems in Engineering،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1032057
Modern Language Association (MLA)
Cai, Lin& He, Miao. A Numerical Study on the Supersonic Steam Ejector Use in Steam Turbine System. Mathematical Problems in Engineering No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-1032057
American Medical Association (AMA)
Cai, Lin& He, Miao. A Numerical Study on the Supersonic Steam Ejector Use in Steam Turbine System. Mathematical Problems in Engineering. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1032057
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1032057