TY - JOUR
T1 - The best angle of hot steam injection holes in the 3D steam turbine blade cascade
AU - Kafaei, Amir
AU - Salmani, Fahime
AU - Lakzian, Esmail
AU - Wróblewski, Włodzimierz
AU - Vlaskin, Mikhail S.
AU - Deng, Qinghua
N1 - Publisher Copyright:
© 2021
PY - 2022/3
Y1 - 2022/3
N2 - Steam turbines play an undeniable role in the power generation cycle. In this paper, in order to increase the efficiency of steam turbines, hot steam is injected between the steam turbine blades in 3D mode. Therefore, by defining five comparative criteria (liquid mass fraction, condensation loss, kinetic energy, hot steam injection ratio, and economic cost), injections with holes in various angles are investigated. For this purpose, the effects of the angle of the hot steam injection holes are discussed at the suction side on the two-phase flow parameters. The optimal angle for hot steam injection holes is selected (−60°), at which liquid mass fraction, condensation loss, and kinetic energy are reduced by 40%, 22%, and 1%, respectively. In addition, economic costs and hot steam injection holes are 0.56 ($/hour) and 0.07 for the suggested case.
AB - Steam turbines play an undeniable role in the power generation cycle. In this paper, in order to increase the efficiency of steam turbines, hot steam is injected between the steam turbine blades in 3D mode. Therefore, by defining five comparative criteria (liquid mass fraction, condensation loss, kinetic energy, hot steam injection ratio, and economic cost), injections with holes in various angles are investigated. For this purpose, the effects of the angle of the hot steam injection holes are discussed at the suction side on the two-phase flow parameters. The optimal angle for hot steam injection holes is selected (−60°), at which liquid mass fraction, condensation loss, and kinetic energy are reduced by 40%, 22%, and 1%, respectively. In addition, economic costs and hot steam injection holes are 0.56 ($/hour) and 0.07 for the suggested case.
KW - Holes angle
KW - Hot steam injection holes
KW - Non-equilibrium condensation
KW - Three-dimensional cascade
UR - https://www.scopus.com/pages/publications/85120495100
U2 - 10.1016/j.ijthermalsci.2021.107387
DO - 10.1016/j.ijthermalsci.2021.107387
M3 - 文章
AN - SCOPUS:85120495100
SN - 1290-0729
VL - 173
JO - International Journal of Thermal Sciences
JF - International Journal of Thermal Sciences
M1 - 107387
ER -