3D CFD simulations of a candidate R143a radial-inflow turbine for geothermal power applications
Data(s) |
01/07/2014
|
---|---|
Resumo |
Optimisation of Organic Rankine Cycles (ORCs) for binary cycle applications could play a major role in determining the competitiveness of low to moderate renewable sources. An important aspect of the optimisation is to maximise the turbine output power for a given resource. This requires careful attention to the turbine design notably through numerical simulations. Challenges in the numerical modelling of radial-inflow turbines using high-density working fluids still need to be addressed in order to improve the turbine design and better optimise ORCs. This paper presents preliminary 3D numerical simulations of a radial-inflow turbine working with high-density fluids in realistic geothermal ORCs. Following extensive investigation of the operating conditions and thermodynamic cycle analysis, the refrigerant R143a is chosen as the high-density working fluid. The 1D design of the candidate radial-inflow turbine is presented in details. Furthermore, commercially-available software Ansys-CFX is used to perform the 3D CFD simulations for a number of operating conditions including off-design conditions. The real-gas properties are obtained using the Peng-Robinson equations of state. The preliminary design created using dedicated radial-inflow turbine software Concepts-Rital is discussed and the 3D CFD results are presented and compared against the meanline analysis. |
Formato |
application/pdf |
Identificador | |
Publicador |
ASME |
Relação |
http://eprints.qut.edu.au/74693/1/POWER2014-32158_Final.pdf DOI:10.1115/POWER2014-32158 Sauret, Emilie & Gu, YuanTong (2014) 3D CFD simulations of a candidate R143a radial-inflow turbine for geothermal power applications. In Proceedings of the ASME 2014 Power Conference, ASME, Baltimore, Maryland, USA, pp. 1-8. http://purl.org/au-research/grants/ARC/DE130101183 |
Direitos |
Copyright 2014 ASME |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty |
Palavras-Chave | #091501 Computational Fluid Dynamics #099999 Engineering not elsewhere classified #CFD #Radial-Inflow Turbine #Geothermal Energy |
Tipo |
Conference Paper |