Dynamic Simulation of an Organic Rankine Cycle—Detailed Model of a Kettle Boiler
AbstractOrganic Rankine Cycles (ORCs) are nowadays a valuable technology to produce electricity from low and medium temperature heat sources, e.g., in geothermal, biomass and waste heat recovery applications. Dynamic simulations can help improve the flexibility and operation of such plants, and guarantee a better economic performance. In this work, a dynamic model for a multi-pass kettle evaporator of a geothermal ORC power plant has been developed and its dynamics have been validated against measured data. The model combines the finite volume approach on the tube side and a two-volume cavity on the shell side. To validate the dynamic model, a positive and a negative step function in heat source flow rate is applied. The simulation model performed well in both cases. The liquid level appeared the most challenging quantity to simulate. A better agreement in temperature was achieved by increasing the volume flow rate of the geothermal brine by 2% over the entire simulation. Measurement errors, discrepancies in working fluid and thermal brine properties and uncertainties in heat transfer correlations can account for this. In the future, the entire geothermal power plant will be simulated, and suggestions to improve its dynamics and control by means of simulations will be provided. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Pili, R.; Spliethoff, H.; Wieland, C. Dynamic Simulation of an Organic Rankine Cycle—Detailed Model of a Kettle Boiler. Energies 2017, 10, 548.
Pili R, Spliethoff H, Wieland C. Dynamic Simulation of an Organic Rankine Cycle—Detailed Model of a Kettle Boiler. Energies. 2017; 10(4):548.Chicago/Turabian Style
Pili, Roberto; Spliethoff, Hartmut; Wieland, Christoph. 2017. "Dynamic Simulation of an Organic Rankine Cycle—Detailed Model of a Kettle Boiler." Energies 10, no. 4: 548.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.