Open AccessDevelopment of an algorithm for analyzing the causes of increased oxygen content of condensate
Author(s) -
T V Iglina,
A. I. Popov,
N P Krasnova,
J I Rakhimova,
A S Gorshenin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/791/1/012013
Subject(s) - condensation , condenser (optics) , work (physics) , suction , oxygen , environmental science , heat transfer , water vapor , water content , volumetric flow rate , turbine , flow (mathematics) , process engineering , materials science , chemistry , environmental engineering , chemical engineering , thermodynamics , mechanics , engineering , physics , geotechnical engineering , organic chemistry , light source , optics
To increase the efficiency of condensers, one of the most important methods is to constantly maintain a high hydraulic density, since malfunctions of the condensing unit lead to a significant reduction in electricity generation. The increased air content in the wet vapor in the condenser and the air suction into the turbine, lead to exceeding the standard values of the condensate oxygen content and therefore have a significant impact on the uninterrupted operation of the TPP, causing the pipeline to corrode from the condensation unit to the deaerating unit. In addition, the increased oxygen content makes heat transfer difficult, since an insulating layer is formed between the condensate film on the heated surface and the steam. Currently, there are a number of methods for thermal calculation of a condensation unit. In this work, the most accurate Iglin-Shepelev technique was used. Using the developed algorithm, the work of the Kirov CHPP-4 and Bezymyanskaya CHPP was analyzed. The experimental data with the calculated characteristics plotted on them are also clearly shown at various temperatures of cooling water with an average flow rate of circulating water, and the reasons for the increased oxygen content of the condensing units of the stations under consideration are identified. Based on the calculation results, measures were proposed to eliminate the increased oxygen content.