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Session: Poster Session and Sponsors Exhibition
Session starts: Thursday 22 September, 14:00

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Piotr Klonowicz (Technical University of Lodz, Institute of Turbomachinery Wolczanska 223/225, 93-005 Lodz, Poland)
Pawel Hanausek (Turboservice Sp. z o.o., Wroblewskiego 38A, 93-578 Lodz, Poland)

Abstract:
The ORC power plants require essentially their turbines to be individually designed for each power plant case. This is due to the varying parameters (temperature, capacity) of the heat sources to be utilized by a prospective ORC power plant. Moreover, selected cycle working fluid and its critical parameters, as well as certain design constraints (like in the case of the hermetic turbogenerators), are all affecting the final design of the turbine that should yield the maximum power output. Occurrence of the transonic and supersonic flows in the turbine channels is another difficulty to reach the optimum turbine design. Several basic turbine designs will be discussed in this contribution. Their final form was achieved with support of the numerical 3D viscous flow simulations by using the ANSYS CFX code. The thermodynamic parameters of the organic fluids were taken from the REFPROP library. The discussed turbine solutions will refer mainly to application of HFC 227ea as the organic cycle fluid.