E3S Web Conf.
Volume 178, 2020High Speed Turbomachines and Electrical Drives Conference 2020 (HSTED-2020)
|Number of page(s)||4|
|Published online||09 July 2020|
Steam reheater with helical tube bundle for wet steam turbine
Peter the Great St. Petersburg Polytechnic University, Russia, 195251 Saint-Petersburg, Polytechnicheskaya 29
2 St. Petersburg State University of Aerospace Instrumentation, Russia, 190000 St. Petersburg, Bolshaya Morskaya str. 67
3 Concern Avrora Scientific and Production Association JSC, Russia, 194021 Saint-Petersburg, Karbysheva str. 15
* Corresponding author: email@example.com
Since steam heat exchangers, used at steam cycle of Russian nuclear power stations, were designed while the knowledge about the separation and the heat exchange processes was limited, deviations between its empirical and theoretical characteristics occur. This limitation also determined application of heating pipes with simple straight shape rather than curved. This study explores a steam heat exchanger with helical heating pipes. It was shown that the model may work stably within the range of parameters, simulating work conditions of the moisture separator and steam reheater at Leningrad nuclear power plant. The experiment included processing of pure water steam as well as mixture of steam and nitrogen. It was obtained a relationship between empirical the heat transfer coefficient and the steam mass flow rate. It was noted that presence of incondensable gas does not affect significantly the heat transfer from the coils, processing high pressure steam.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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