Reference : Dynamic modeling and optimal control strategy of waste heat recovery Organic Rankine Cyc...
Scientific journals : Article
Engineering, computing & technology : Energy
http://hdl.handle.net/2268/81508
Dynamic modeling and optimal control strategy of waste heat recovery Organic Rankine Cycles
English
Quoilin, Sylvain mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Systèmes énergétiques >]
Aumann, Richard [> >]
Grill, Andreas [> >]
Schuster, Andreas [> >]
Lemort, Vincent mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Systèmes énergétiques >]
Spliethoff, Hartmut [> >]
2011
Applied Energy
Elsevier Science
Yes (verified by ORBi)
International
0306-2619
[en] dynamic modeling ; control ; optimization ; ORC ; Organic Rankine Cycle ; Waste heat recovery
[en] Organic Rankine Cycles (ORCs) are particularly suitable for recovering energy from low-grade heat sources. This paper describes the behavior of a small scale ORC used to recover energy from a variable flow rate and temperature waste heat source. A traditional static model is unable to predict transient behavior in a cycle with a varying thermal source, whereas this capability is essential for simulating an appropriate cycle control strategy during part-load operation and start and stop procedures. A dynamic model of the ORC is therefore proposed focusing specifically on the time-varying performance of the heat exchangers, the dynamics of the other components being of minor importance. Three different control strategies are proposed and compared. The simulation results show that a model predictive control strategy based on the steady-state optimization of the cycle under various conditions is the one showing the best results.
University of Lièbe - Energy Systems
TU München - Institute for Energy Systems
Researchers ; Professionals
http://hdl.handle.net/2268/81508
10.1016/j.apenergy.2011.01.015
http://dx.doi.org/10.1016/j.apenergy.2011.01.015

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