Influence of the Partial Admission and Blade Aspect Ratio on an ORC Turbine Performance orc2019 Tracking Number 135Presentation: Session: Poster session and Ouzo tasting in room Kallirhoe Room: --- Session start: 17:20 Mon 09 Sep 2019 Władysław Kryłłowicz wkryl@p.lodz.pl Affifliation: Lodz University of Technology Grzegorz Górecki grzegorz.gorecki@p.lodz.pl Affifliation: Lodz University of Technology Piotr Klonowicz pklonowicz@imp.gda.pl Affifliation: Institute of Fluid-Flow Machinery Polish Academy of Sciences Łukasz Antczak antczak@marani.pl Affifliation: Marani Sp. z o.o. Krzysztof Kantyka krzysztof.kantyka@p.lodz.pl Affifliation: Lodz University of Technology Topics: - Turbines (Topics), - Poster Presentation (Preferred Presentation type) Abstract: The paper describes the experimental and numerical results of a single stage impulse turbine which is a part of a hermetic turbogenerator working with HFE 7100 fluid. The device is a component of a hybrid micro power plant consisting of two sub-cycles: high temperature steam cycle and an ORC bottoming cycle. The experimental tests included the turbines with two admission sizes: ε = 0.25 and ε = 0.5. For each admission size different blade heights were tested. For the selected geometrical cases steady-state RANS simulations have been performed in which the real gas equations of state has been applied in form of a look-up table. The influence of the blade height (aspect ratio) and the tip clearance on the stage losses was investigated. The results have been compared with the selected empirical loss models as well as with the obtained experimental results. |