Dynamic Modeling and Control System Definition for a Micro-CSP Plant Coupled With Thermal Storage Unit

Organic Rankine cycle (ORC) systems are gaining ground as a means of effectively providing sustainable energy. Coupling small-scale ORCs powered by scroll expander-generators with solar thermal collectors and storage can provide combined heat and power to underserved rural communities. Simulation of such systems is instrumental in optimizing their control strategy. However, most models developed so far operate at steady-state or focus either on ORC or on storage dynamics. In this work, a model for the dynamics of the solar ORC system is developed to evaluate the impact of variable heat sources and sinks, thermal storage, and the variable loads associated with distributed generation. This model is then used to assess control schemes that adjust operating conditions for daily environmental variation.Copyright © 2014 by ASME

[1]  Tsing-Fa Lin,et al.  Saturated flow boiling heat transfer and pressure drop of refrigerant R-410A in a vertical plate heat exchanger , 2002 .

[2]  Sylvain Quoilin,et al.  Sustainable energy conversion through the use of Organic Rankine Cycles for waste heat recovery and solar applications , 2011 .

[3]  Francesco Casella,et al.  Dynamic Modeling of Organic Rankine Cycle Power Systems , 2013 .

[4]  Vincent Lemort,et al.  Methods to Increase the Robustness of Finite-Volume Flow Models in Thermodynamic Systems , 2014 .

[5]  Vincent Lemort,et al.  Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp , 2014, Industrial & engineering chemistry research.

[6]  Nae-Hyun Kim,et al.  Air-Side Heat Transfer and Friction Correlations for Plain Fin-and-Tube Heat Exchangers With Staggered Tube Arrangements , 1999 .

[7]  Vincent Lemort,et al.  ThermoCycle: A Modelica library for the simulation of thermodynamic systems , 2014 .

[8]  Andrew C. McMahan,et al.  Design & Optimization of Organic Rankine Cycle Solar-Thermal Powerplants , 2006 .

[9]  R. Forristall,et al.  Heat Transfer Analysis and Modeling of a Parabolic Trough Solar Receiver Implemented in Engineering Equation Solver , 2003 .

[10]  Zhen Lu,et al.  Dynamic modeling and simulation of an Organic Rankine Cycle (ORC) system for waste heat recovery , 2008 .

[11]  S. Quoilin,et al.  Performance and design optimization of a low-cost solar organic Rankine cycle for remote power generation , 2011 .

[12]  Vincent Lemort,et al.  Experimental characterization of a hermetic scroll expander for use in a micro-scale Rankine cycle , 2012 .

[13]  Melissa Kara Ireland,et al.  Dynamic modeling and control strategies for a micro-CSP plant with thermal storage powered by the Organic Rankine cycle , 2014 .

[14]  M. Shah.  A general correlation for heat transfer during film condensation inside pipes , 1979 .

[15]  B. Thonon,et al.  Recent Research and Developments in Plate Heat Exchangers , 1995 .

[16]  Peter A. Jacobs,et al.  Dynamic performance estimation of small-scale solar cogeneration with an organic Rankine cycle using a scroll expander , 2013 .

[17]  A. Abdel-azim.  Fundamentals of Heat and Mass Transfer , 2011 .

[18]  Matthew S. Orosz,et al.  ThermoSolar and photovoltaic hybridization for small scale distributed generation : applications for powering rural health , 2012 .