TY - GEN
T1 - Fluid-dynamic design and characterization of a mini-ORC turbine for laboratory experiments
AU - Pini, M.
AU - De Servi, C.
AU - Burigana, M.
AU - Bahamonde Noriega, J.S.
AU - Rubino, A.
AU - Vitale, S.
AU - Colonna, P.
PY - 2017
Y1 - 2017
N2 - High temperature Organic Rankine Cycles power systems of low power capacity, i.e. 3-50 kWe, are receiving recognition for distributed and mobile energy generation applications. For this type of power plants, it is customary to adopt a radial-turbine as prime mover, essentially for their ability to cope with very large volumetric flow ratio with limited fluid-dynamic penalty. To date, the design of such turbines is based on design guidelines and loss models developed mainly for turbo-chargers, subsequently adapted by means of non-validated computational fluid-dynamic calculations. In the attempt to provide data sets for CFD validation and calibration of loss models, a mini-ORC radial inflow turbine delivering 10kW of mechanical power will be realized and tested in the Propulsion and Power Laboratory of TU-Delft. The fluid dynamic design and characterization of the machine is detailed in this paper. According to available models, the results indicate that the optimal layout of mini-ORC turbines can substantially differ from that of radial-inflow turbines utilized in more traditional applications, strengthening the need of experimental campaigns to support the conception of new design practices.
AB - High temperature Organic Rankine Cycles power systems of low power capacity, i.e. 3-50 kWe, are receiving recognition for distributed and mobile energy generation applications. For this type of power plants, it is customary to adopt a radial-turbine as prime mover, essentially for their ability to cope with very large volumetric flow ratio with limited fluid-dynamic penalty. To date, the design of such turbines is based on design guidelines and loss models developed mainly for turbo-chargers, subsequently adapted by means of non-validated computational fluid-dynamic calculations. In the attempt to provide data sets for CFD validation and calibration of loss models, a mini-ORC radial inflow turbine delivering 10kW of mechanical power will be realized and tested in the Propulsion and Power Laboratory of TU-Delft. The fluid dynamic design and characterization of the machine is detailed in this paper. According to available models, the results indicate that the optimal layout of mini-ORC turbines can substantially differ from that of radial-inflow turbines utilized in more traditional applications, strengthening the need of experimental campaigns to support the conception of new design practices.
KW - CFD
KW - Loss Breakdown
KW - mini-ORC turbines
KW - radial-inflow turbine
UR - http://www.scopus.com/inward/record.url?scp=85029754456&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:ad3ac76e-d986-4b83-9aa6-3bf90cebb0eb
U2 - 10.1016/j.egypro.2017.09.186
DO - 10.1016/j.egypro.2017.09.186
M3 - Conference contribution
AN - SCOPUS:85029754456
VL - 129
T3 - Energy Procedia
SP - 1141
EP - 1148
BT - 4th International Seminar on ORC Power Systems
A2 - Dossena, V.
A2 - Guardone, A.
A2 - Astolfi, M.
PB - Elsevier
ER -