Dynamic modeling and simulation of an Organic Rankine Cycle (ORC) system for waste heat recovery

• Published in: Applied thermal engineering Vol. 28; no. 10; pp. 1216 - 1224
• Main Authors: Wei, Donghong, Lu, Xuesheng, Lu, Zhen, Gu, Jianming
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-07-2008; Elsevier
• Subjects: Applied sciences; Discretized models; Dynamic modeling; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Heat transfer; Moving boundary models; Organic Rankine Cycle; System simulation; Theoretical studies. Data and constants. Metering; Waste heat recovery; Discretized models; System simulation; Moving boundary models; Waste heat recovery; Organic Rankine Cycle; Dynamic modeling; Modeling; Waste retrieval; Heat recovery; Accuracy; Discretization; Simulation; Rankine cycle; Waste heat; Dynamic model
• ISSN: 1359-4311
• DOI: 10.1016/j.applthermaleng.2007.07.019

The paper proposes two alternative approaches for the design of a dynamic model for an Organic Rankine Cycle (ORC) to be used for the design of control and diagnostics systems. The model has been developed in Modelica language and simulated with Dymola. The two modeling approaches, based on moving boundary and discretization techniques, are compared in terms of accuracy, complexity and simulation speed. Compared to experimental data simulations evidence that while both models have good accuracy. And the moving boundary model is faster, therefore more suitable for control design applications.