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Dynamic modeling and optimal control strategy of waste heat recovery Organic Rankine Cycles
- Source :
-
Applied Energy . Jun2011, Vol. 88 Issue 6, p2183-2190. 8p. - Publication Year :
- 2011
-
Abstract
- Abstract: 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03062619
- Volume :
- 88
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Applied Energy
- Publication Type :
- Academic Journal
- Accession number :
- 58098675
- Full Text :
- https://doi.org/10.1016/j.apenergy.2011.01.015