[home] [Personal Program] [Help]

---

Session: Turbo expanders III
Session starts: Tuesday 08 October, 15:40
Presentation starts: 16:40
Room: Van Weelde Zaal

---

Carlos André de Miranda Ventura (The University of Queensland, Australia)
Andrew Stewart Rowlands (The University of Queensland, Australia)

Abstract:
In this study, the integration between a comprehensive preliminary design and performance estimation approach for radial inflow turbines and a thermodynamic cycle analysis procedure is described. The integration involved the creation of a MySQL database capable of accommodating and sorting large amounts of data and resulted in the creation of a model-based radial inflow turbine database for a range of Organic Rankine Cycle (ORC) conditions that employed a variety of working fluids. This integrated methodology provides a more comprehensive approach in the estimation of the overall performance of ORCs because unlike conventional methods, which typically assume a value for the efficiency of the turbomachinery used in the cycle, here we use a validated preliminary design model to calculate efficiency estimations for a given cycle condition. Our database permitted the establishment of several model-based correlations with regards to the use of these turbines and cycles by determining relations between cycle performance (specific energy production from a hot resource, B (kJ/kg)) and typical operating point constraints, such as the resource fluid temperature and high-side pressure. In the present work, results for a variety of working fluids and ranges of operating conditions are tested and discussed.