Heat-Exchanger Network Synthesis Involving Organic Rankine Cycle for Waste Heat Recovery

This article aims to present a mathematical model for the synthesis of a heat-exchanger network (HEN) which can be integrated with an organic Rankine cycle (ORC) for the recovery of low-grade waste heat from the heat surplus zone of the background process. An ORC-incorporated stagewise superstructure considering all possible heat-exchange matches between process hot/cold streams and the ORC is first presented. On the basis of this superstructure, the model for synthesizing ORC-integrated HENs is formulated as a mixed-integer nonlinear program (MINLP). A two-step solution procedure is proposed to solve the MINLP model. First, a stand-alone HEN is synthesized to minimize the external utility consumption. An ORC is then incorporated into the HEN with the objective of maximizing the work produced from waste heat (in the heat surplus zone below the process pinch) without increasing the use of a hot utility. A literature example is solved to demonstrate the application of the proposed model for industrial waste...

[1]  Jiří Jaromír Klemeš,et al.  Forty years of Heat Integration: Pinch Analysis (PA) and Mathematical Programming (MP) , 2013 .

[2]  Patrick Linke,et al.  On the systematic design and selection of optimal working fluids for Organic Rankine Cycles , 2010 .

[3]  Ignacio E. Grossmann,et al.  Simultaneous optimization models for heat integration—I. Area and energy targeting and modeling of multi-stream exchangers , 1990 .

[4]  Jiří J. Klemeš,et al.  Handbook of Process Integration (PI) , 2013 .

[5]  Mahmoud M. El-Halwagi,et al.  Sustainable Integration of Trigeneration Systems with Heat Exchanger Networks , 2014 .

[6]  J. Van Roy,et al.  Parametric optimization and performance analysis of a waste heat recovery system using Organic Ranki , 2010 .

[7]  Mahmoud M. El-Halwagi,et al.  Optimal integration of organic Rankine cycles with industrial processes , 2013 .

[8]  Kevin C. Furman,et al.  A Critical Review and Annotated Bibliography for Heat Exchanger Network Synthesis in the 20th Century , 2002 .

[9]  Pedro J. Mago,et al.  An examination of regenerative organic Rankine cycles using dry fluids , 2008 .

[10]  Patrick Linke,et al.  Toward Optimum Working Fluid Mixtures for Organic Rankine Cycles using Molecular Design and Sensitivity Analysis , 2013 .

[11]  Ignacio E. Grossmann,et al.  Optimal synthesis of heat exchanger networks involving isothermal process streams , 2008, Comput. Chem. Eng..

[12]  Santanu Bandyopadhyay,et al.  Process integration of organic Rankine cycle , 2009 .

[13]  Christopher Depcik,et al.  Review of organic Rankine cycles for internal combustion engine exhaust waste heat recovery , 2013 .