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Assessment of possibilities for an increase in the efficiency rates of steam turbine settings

Zariankin A. E., Zariankin V. A., Simonov B. P.

Systems : journal of transdisciplinary systems science

2004

Vol. 9, Sp. 2/2

661-670

Analysis on turbine stage reaction efficiency influence

Zariankin A. E., Koshkin S. V.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

1999

nr 115

499--506

The key characteristic of a turbine stage is its reaction rate, which defines not only the stage efficiency, but also effects the flow passage design in multi-stage turbine. The submitted report presents the influence of the efficiency reaction and analysis the loss of velocity coefficients in blades. This influence is essentially less in the active stages and is small in stages with negative reaction. In the last case an optimal thermal drop of a stage is decisively increased and an opportunity arises to reduce dimensions of multi-stages turbines under the acceptable decrease of maximum efficiency of a turbine, from the technical stand point.