Simplified and approximated correlations of heat transfer effectiveness for steam condenser
Abstract
This paper presents two simplified and approximated relations of heat transfer effectivneness for steam condenser. The proposed relations of heat transfer effectivneness are a function of the measured and reference parameters. Correctness of relations were verified on the basis of data from the characteristics and measured data for the 200 MW steam condenser. A comparison of the outlet cooling water temperature calculated from the proposed relations and Beckman formula were performed. Formula proposed by Beckman for steam condenser of heat transfer effectivneness, in simplified form, is a function of saturation temperature, mass flow rate of cooling water and the reference parameter. It contains two constant exponents, which must be determined on the basis of the measured data. To assess the accuracy of the correlations the average value and standard deviation were used. The proposed correlations have simpler forms, but are slightly less accurate compared to the Beckman correlation.References
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[3] E. Kostowski, Heat Transfer (in Polish), WPŚ Gliwice, 2000.
[4] T. S. Wiśniewski, Heat Transfer (in Polish), WNT
Warszawa, 1997.
[5] Y. A. Cengel, Heat transfer, McGraw-Hill, 1998.
[6] Y. A. Cengel, Heat and mass transfer, McGraw-Hill, 2007.
[7] G. Beckman, G. Heil, Mathematische Modelle für die
Beurteilung von Kraftwerksprozessen, EKM Mitteillungen 10 / 1965.
[8] P. Bogusz, O. Kopczyński, J. Lewandowski, Simplified
model of heat exchanger (in Polish), XVIII th Congress of the Thermodynamics 22 (2002) 129–135.
[9] O. Kopczyński, J. Lewandowski, A concept of thermal -
flow state diagnostic system for heat exchangers (in Polish), International Conference Research and Development
in Power Engineering (2001) 169–178.
[10] G. Szapajko, H. Rusinowski, Empirical modelling of heat
exchangers in a CHP Plant with bleed-condensing turbine, Archives of Thermodynamics Vol. 29, 2008, No. 4.
[11] G. Szapajko, H. Rusinowski, Theoretical-empirical model
of the steam-water cycle of the power unit, Acta Montanistica Slovaca 15 (2010) 24–27.
[12] R. M. Laskowski, The application of the Buckingham
theorem to modeling high-pressure regenerative heat exchangers in changed conditions, Journal of Power Technologies 91 (4) (2011) 198–205.
[13] R. M. Laskowski, The concept of a new approximate relation for heat transfer effectiveness for a cross-flow heat
exchanger with unmixed fluids, Journal of Power Technologies 91 (2) (2011) 93–101.
[14] W. ˙Zakowski, W. Kołodziej, Mathematics (in Polish),
WNT Warsaw, 1993.
Published
2012-12-20
How to Cite
LASKOWSKI, Rafal Marcin; LEWANDOWSKI, Janusz.
Simplified and approximated correlations of heat transfer effectiveness for steam condenser.
Journal of Power Technologies, [S.l.], v. 92, n. 4, p. 258--265, dec. 2012.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/337>. Date accessed: 25 apr. 2024.
Issue
Section
Power Plant
Keywords
heat transfer effectivneness; steam condenser; approximated correlation
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