Calculations of the pressure drop in the natural circulation boiler evaporator
Author
Grądziel, Sławomir
Majewski, Karol
Published in
MATEC Web of Conferences
Numbering
Vol. 240 (05009)
Release date
2018
Publisher
EDP Sciences
Language
English
eISSN
2261-236X
DOI
doi.org/10.1051/matecconf/201824005009
Comments
XI International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2018) , Cracow, Poland, May 21-24, 2018
Keywords
two-phase flow, power boilers, natural circulation, pressure drop
Abstract
The paper presents different models used to determine pressure losses in two-phase flows: the homogeneous model, the Lockhart-Martinelli, the Friedel and the Chisholm phase-slip models and the Martinelli-Nelson graphical method. The pressure losses are calculated for the evaporator of an OP-210 boiler with the output of 210×103 kg/h operating in one of the Polish power plants. The results obtained by means of the presented models are compared to each other.
