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Graphical Approach for Targeting Work Exchange Networks

Authors: Hui Chen, Xiao Feng


Depressurization and pressurization streams in industrial systems constitute a work exchange network (WEN). In this paper, a novel graphical approach for targeting energy conservation potential of a WEN is proposed. Through constructing the composite work curves in the pressure-work diagram and assuming all of the mechanical energy of the depressurization streams is recovered by expanders, the maximum work target of a WEN can be determined via the proposed targeting steps. A WEN in an ammonia production process is used as a case study to illustrate the applicability of the proposed graphical approach.

Keywords: Expanders, Graphical approach, Pressure-work diagram, Work exchange network, Work target

Digital Object Identifier (DOI):

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[1] Y. L. Huang, and L. T. Fan, "Analysis of a work exchanger network," Ind. Eng. Chem. Res., vol. 35, pp. 3528-3538, Oct. 1996.
[2] W. T. Andrews, D. S. Laker, "A twelve-year history of large scale application of work exchanger energy recovery technology," Desalination, vol. 138, pp. 201-206, Mar. 2001.
[3] O. M. Al-Hawaj. "The work exchanger for reverse osmosis plants," Desalination, vol. 157, pp. 23-27, Mar. 2003.
[4] B. Linnhoff, and E. Hindmarsh, "The pinch design method of heat exchanger network," Chem. Eng. Sci., vol. 38, pp. 745-763, May 1983.
[5] X. Feng, Chemical principles and techniques of energy conservation (in Chinese). Beijing: Chemical Industry Press, 2004.
[6] A. I. Salama. "Heat exchanger network synthesis based on minimum rule variations," Appl. Therm. Eng., vol. 28, pp. 1234-1249, Oct. 2008.
[7] M. M. El-Halwagi, Process integration. New York: Academic Press, 2006, ch. 2.
[8] Z. H. Zhao, G. L Liu, and X. Feng, "New graphical method for the integration of hydrogen distribution systems," Ind. Eng. Chem. Res., vol. 45, pp. 6512-6517, Oct. 2006.
[9] Z. H. Zhao, G. L Liu, and X. Feng, "The integration of the hydrogen distribution system with multiple impurities," Chem. Eng. Res. Des., vol. 85, pp. 1295-1304, Sep. 2007.
[10] Y. Ding, X. Feng, and H. K. Chu, "Optimization of Hydrogen Distribution Systems with Pressure Constraints," J. Clean Prod., vol. 19, pp. 204-211, Feb. 2011.