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Optimization of Inlet Conditions of Hot Steam Injection Into the Non-equilibrium Condensing Steam by Mohammad Ghodrati; Esmail Lakzian; Heuy Dong Kim is a Engineering article available to read on EtoBox.

What is Optimization of Inlet Conditions of Hot Steam Injection Into the Non-equilibrium Condensing Steam about?

Injecting hot steam into the cascade flow is one of the procedures for resisting losses and damages caused by condensation. In the current study, utilizing a 3D (three-dimensional) geometry for steam turbine blades, the hot steam has been injected into the steam cascade via the embedded channel. In the power plant industry, the hot steam injection process is done in two ways: constant pressure with a reservoir or constant mass flow rate utilizing a control valve. Therefore, considering these two methods and the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) optimization method, the best temperature for injecting hot steam into non-equilibrium steam in a constant steam turbine blade has been gained. At the optimal temperature of 540 K at the constant pressure mode, Er (erosion rate ratio) and Lr (condensation loss ratio) were obtained as 66.6% and 30.7%, respectively, and Kr (kinetic energy ratio) showed a 0.6% growth in the hot steam injection mode, in comparison with the original mode. In addition, the economic cost of hot steam injection was calculated as 0.457 ($/hour). By the TOPSIS optimization method, the optimal temperature of hot steam injection,

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Author

Mohammad Ghodrati; Esmail Lakzian; Heuy Dong Kim

Publisher

AIP Publishing

Published

2023

Language

EN

Field

Engineering (Physical Sciences)