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Modelling of Organic Rankine Cycle for Waste Heat Recovery Process in Supercritical Condition

Authors: Jahedul Islam Chowdhury, Bao Kha Nguyen, David Thornhill, Roy Douglas, Stephen Glover

Abstract:

Organic Rankine Cycle (ORC) is the most commonly used method for recovering energy from small sources of heat. The investigation of the ORC in supercritical condition is a new research area as it has a potential to generate high power and thermal efficiency in a waste heat recovery system. This paper presents a steady state ORC model in supercritical condition and its simulations with a real engine’s exhaust data. The key component of ORC, evaporator, is modelled using finite volume method, modelling of all other components of the waste heat recovery system such as pump, expander and condenser are also presented. The aim of this paper is to investigate the effects of mass flow rate and evaporator outlet temperature on the efficiency of the waste heat recovery process. Additionally, the necessity of maintaining an optimum evaporator outlet temperature is also investigated. Simulation results show that modification of mass flow rate is the key to changing the operating temperature at the evaporator outlet.

Keywords: Organic Rankine cycle, supercritical condition, steady state model, waste heat recovery.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1099730

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References:


[1] A. Boretti, “Recovery of exhaust and coolant heat with R245fa organic Rankine cycles in a hybrid passenger car with a naturally aspirated gasoline engine,” Applied Thermal Engineering, vol. 36, pp. 73-77, April 2012.
[2] S. Glover, R. Douglas, L. Glover and G. McCullough, “Preliminary analysis of organic Rankine cycles to improve vehicle efficiency,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, vol. 228, no. 10, pp. 1142-1153, April 2014.
[3] H. Gao, C. Liu, C. He, X. Xu, S. Wu and Y. Li, “Performance Analysis and Working Fluid Selection of a Supercritical Organic Rankine Cycle for Low Grade Waste Heat Recovery,” Energies 2012, vol. 5, pp. 3233-3247, Aug. 2012.
[4] J. Zhang, Y. Zhou, Y. Li, G. Hou and F. Fang, “Generalized predictive control applied in waste heat recovery power plants,” Applied Energy, vol. 102, pp. 320–326, Feb. 2013.
[5] S. Quoilin, R. Aumann, A. Grill, A. Schuster, V. Lemort and H. Spliethoff, “Dynamic modeling and optimal control strategy of waste heat recovery Organic Rankine Cycles,” Applied Energy, vol. 88, pp. 2183-2190, June 2011.
[6] D. Ziviani, A. Beyene and M. Venturini, “Advances and challenges in ORC systems modeling for low grade thermal energy recovery,” Applied Energy, vol. 121, pp. 79–95, May 2014.
[7] H. G. Zhang, E. H. Wang and B. Fan, “Heat transfer analysis of a finned-tube evaporator for engine exhaust heat recovery,” Energy Conversion and Management, vol. 65, pp. 438–447, Jan. 2013.
[8] S. Karellasa, A. Schusterb and A.-D. Leontaritis, “Influence of supercritical ORC parameters on plate heat exchanger design,” Applied Thermal Engineering , vol. 33, no. 34, pp. 70-76, Feb. 2012
[9] B. Saleh, G. Koglbauer, M. Wendland and J. Fischer, “Working fluids for low-temperature organic Rankine cycles,” Energy, vol. 32, pp. 1210–1221, July 2007.
[10] A. Schuster, S. Karellas and R. Aumann, “Efficiency optimization potential in supercritical Organic Rankine Cycles,” Energy, vol. 35, pp. 1033–1039, Feb. 2010.
[11] H. Chen, D. Y. Goswami and E. K. Stefanakos, “A review of thermodynamic cycles and working fluids for the conversion of low-grade heat,” Renewable and Sustainable Energy Reviews, vol. 14, pp. 3059–3067, Dec. 2010.
[12] S. Glover, R. Douglas, L. Glover, G. McCullough and S. McKenna, “Automotive Waste Heat Recovery: Working Fluid Selection and Related Boundary Conditions,” International Journal of Automotive Technology, submitted for publication.
[13] J. Zhang, Y. Zhou, R. Wang, J. Xu and F. Fang, “Modeling and constrained multivariable predictive control for ORC (Organic Rankine Cycle) based waste heat energy conversion systems,” Energy, vol. 66, pp. 128-138, March 2014.
[14] Wanner Engineering, Inc., Hydra-Cell industrial pumps -installation and service D03-991-2400A, Minneapolis, USA.
[15] J. Patiño, R. Llopis, D. Sánchez, C. Sanz-Kock, R. Cabello and E. Torrella, “A comparative analysis of a CO2 evaporator model using experimental heat transfer correlations and a flow pattern map,” International Journal of Heat and Mass Transfer, vol. 71, pp. 361–375, April 2014.
[16] R. Buonopane, R. Trupe and J. Morgan, “Heat transfer design method for plate heat exchangers,” Chemical Engineering Progress, vol. 59, no. 7, pp. 57-61, 1963.
[17] S. Quoilin, V. Lemort and J. Lebrun, “Experimental study and modeling of an Organic Rankine Cycle using scroll expander,” Applied Energy, vol. 87, pp. 1260-1268, April 2010.
[18] “www.NIST.gov,” NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP): Version 9, 2010. (Online). (Accessed November 2010).