THE INFLUENCE OF THE HEAT TRANSFER COEFFICIENT VARIATIONS IN THERMAL SYSTEM ELEMENTS ON POWER AND DISTRIBUTION OF EXERGETIC LOSSES IN THE PWR NUCLEAR POWER PLANT

  • Józef Portacha
  • Adam Smyk
  • Idris Feituri

Abstract

The paper shows the results of a study on the influence of the changes of the heat transfer coefficient к on the exergetic losses in some selected equipment components of the thermal system and on the alternations of unit electric power. The changes of the к may be due to the fouling of the heat exchange surfaces or errors in the design. This research concerned with two feed-water heaters (low- and high-pressure) and the steam reheater situated behind the moisture separator. The research was conducted for the range of the ratio к (of actual to the design value of k) from 0.5 to 1.5 of its value assumed in the design. The mathematical model considers off-design operating conditions in the whole thermal system, which result from the change of the coefficient к in the selected parts of the thermal system. The decomposition method and Seild's multilevel iterative process were used to solve the problem. The research proved that the capacity of the unit during operation may differ from the design value - 1000 MW - from ten to twenty MW due to alternations of the operation value of к from the design one.
How to Cite
PORTACHA, Józef; SMYK, Adam; FEITURI, Idris. THE INFLUENCE OF THE HEAT TRANSFER COEFFICIENT VARIATIONS IN THERMAL SYSTEM ELEMENTS ON POWER AND DISTRIBUTION OF EXERGETIC LOSSES IN THE PWR NUCLEAR POWER PLANT. Journal of Power Technologies, [S.l.], v. 79, mar. 2011. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/140>. Date accessed: 22 oct. 2021.
Section
Interdisciplinary

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