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A Review of modeling approaches and Tools for the off-design Simulation of Organic Rankine Cycle

Journal of Thermal Science 2018年第4期27卷 305-320页

作者： LIU Liuchen ZHU Tong GAO Naiping GAN Zhongxue School of Mechanical Engineering Tongji University Shanghai 201803 China ENN Science & Technology Ltd. Hebei 065001 China

Organic Rankine Cycles(ORCs) are an effective way to produce electricity from low-grade heat sources, which cannot be effectively obtained using conventional high-temperature Rankine cycles. Due to the lack of available information regarding the real Organic Rankine Cycle units on industrial level, off-design simulation under diversified operating conditions plays a significant role for both the system performance prediction and control strategy design. This paper summarizes the theoretical basis, modeling approaches and tools for ORC off-design simulations. Firstly, a review was conducted on the individual state-of-the-art convective heat transfer correlations and void fraction models. Secondly, different kinds of modeling approaches and simulation tools were proposed, highlighting their relevant characteristics, and were categorized for their specific applications. Moreover, an in-depth analysis of technical challenges related to various applications and focusing on the model accuracy and complexity, computational efficiency, as well as the model compatibility were extensively described and discussed. Finally, the current research trends in this field and the development for further investigations were presented.

关键词： Organic Rankine Cycle(ORC) low-grade heat modeling approach off-design

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