G.D. Ngoma (Canada), R. Loth (Germany), and R. Wamkeue (Canada)
Power systems, Natural circulation and once-through generators, HRSGs, Numerical simulation
This paper deals with modelling and numerical simulation of natural circulation and once-through heat recovery steam generators used in combined-cycle gas and steam turbine power plants. The developed models and the proposed analysis method lead to a better knowledge of system stabilities in planning and design phases. This is very important to improve the system static and dynamic performances in power plants. Simulations are accomplished in order to prove the effectiveness of the present work in model prediction of flow stabilities. The achieved results clearly demonstrate the necessity to simulate all essential system components of steam generators.
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