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Article

Influence of Tubular Turbine Runaway for Back Pressure Power Generation on the Stability of Circulating Cooling Water System

by 1,2, 1,3,*, 1,3,*, 1 and 1
1
Institute of Water Resources and Electric Power, Xi’an University of Technology, Xi’an 710048, China
2
Xi’an GERUI Energy Power Technology Co., Ltd., Xi’an 710000, China
3
State Key Laboratory of Eco-Hydraulic in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Francesco Gallerano
Water 2022, 14(15), 2294; https://doi.org/10.3390/w14152294
Received: 22 June 2022 / Revised: 16 July 2022 / Accepted: 21 July 2022 / Published: 23 July 2022
(This article belongs to the Section Water-Energy Nexus)
With the increasing maturity of tubular turbine power generation technology, an increasing number of industrial applications use it to recover the rich back pressure energy of a circulating cooling water system (CCWS). However, the influence of tubular turbine runaway on the stability of CCWS is still unclear. This work combines the one-dimensional (1D) method of characteristics (MOC) with the three-dimensional (3D) computational fluid dynamics (CFD), develops a 1D CCWS and 3D tubular turbine coupling simulation method, and simulates the runaway and runaway shutdown processes of tubular turbine under small flow rate condition and large flow rate condition in the real system. Results show that the main operating parameters of the system slightly change when the tubular turbine transitions from the steady state to the runaway condition. The runner’s radial force substantially increases in the runaway condition of the tubular turbine, and the phenomenon of violent oscillation is observed compared with the steady state. During the shutdown process of the tubular turbine runaway condition, the valves in parallel and series with the faulty turbine adopt a reasonable cooperative control strategy, which allows for a smooth recovery of the system operating pressure to the original steady state conditions. View Full-Text
Keywords: tubular turbine; circulating cooling water system; stability; coupled simulation method; runaway and runaway shutdown process tubular turbine; circulating cooling water system; stability; coupled simulation method; runaway and runaway shutdown process
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MDPI and ACS Style

Wang, P.; Luo, X.; Lu, J.; Gao, J.; Cai, Q. Influence of Tubular Turbine Runaway for Back Pressure Power Generation on the Stability of Circulating Cooling Water System. Water 2022, 14, 2294. https://doi.org/10.3390/w14152294

AMA Style

Wang P, Luo X, Lu J, Gao J, Cai Q. Influence of Tubular Turbine Runaway for Back Pressure Power Generation on the Stability of Circulating Cooling Water System. Water. 2022; 14(15):2294. https://doi.org/10.3390/w14152294

Chicago/Turabian Style

Wang, Peng, Xingqi Luo, Jinling Lu, Jiawei Gao, and Qingsen Cai. 2022. "Influence of Tubular Turbine Runaway for Back Pressure Power Generation on the Stability of Circulating Cooling Water System" Water 14, no. 15: 2294. https://doi.org/10.3390/w14152294

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