An Explicit Solution for Thermal Calculation and Synthesis of Superstructure Heat Exchanger Networks

Abstract For the optimal design of a heat exchanger network, the inlet and outlet stream temperatures of each heat exchanger in the network should be known. An explicit analytical solution of stream temperatures of an arbitrary connected heat exchanger network was introduced, which is suitable for the thermal calculation of heat exchanger networks. For the heat exchanger network synthesis, this solution was further developed and coupled with the stage-wise superstructure heat exchanger networks. The new calculation procedure reduced the computer memory requirement dramatically. On the basis of this solution, a mathematical model for synthesis of heat exchanger networks with genetic algorithm was formulated, which is always feasible and no iteration is needed. Two examples were calculated with the proposed approach and better results were obtained.

[1]  Ignacio E. Grossmann,et al.  Optimum design of heat exchanger networks , 1978 .

[2]  Christodoulos A. Floudas,et al.  Automatic synthesis of optimum heat exchanger network configurations , 1986 .

[3]  Christodoulos A. Floudas,et al.  Heat exchanger network synthesis without decomposition , 1991 .

[4]  Daniel R. Lewin,et al.  A generalized method for HEN synthesis using stochastic optimization. I. General framework and MER optimal synthesis , 1998 .

[5]  Wilfried Roetzel,et al.  Thermal analysis of heat exchanger networks , 2005 .

[6]  Pingjing Yao,et al.  A Parallel Genetic Algorithm/Simulated Annealing Algorithm for Synthesizing Multistream Heat Exchanger Networks , 2004 .

[7]  Luo Xing Study on Multi-stream Heat Exchanger Network Synthesis with Parallel Genetic/Simulated Annealing Algorithm , 2004 .

[8]  B. Linnhoff,et al.  The pinch design method for heat exchanger networks , 1983 .

[9]  Xing Luo,et al.  A general solution for one-dimensional multistream heat exchangers and their networks , 2002 .

[10]  Ignacio E. Grossmann,et al.  A structural optimization approach in process synthesis—I: Utility systems , 1983 .

[11]  Olaf Strelow,et al.  A general calculation method for plate heat exchangers , 2000 .

[12]  Bodo Linnhoff,et al.  Understanding heat exchanger networks , 1979 .

[13]  Luo Xing Multi-stream heat exchanger networks synthesis with improved genetic algorithm , 2004 .

[14]  Bodo Linnhoff,et al.  A User guide on process integration for the efficient use of energy , 1994 .

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

[16]  Ignacio E. Grossmann,et al.  A structural optimization approach in process synthesis. II: Heat recovery networks , 1983 .

[17]  B. Lin,et al.  Solving heat exchanger network synthesis problems with Tabu Search , 2004, Comput. Chem. Eng..

[18]  Mauro A.S.S. Ravagnani,et al.  Heat exchanger network synthesis and optimisation using genetic algorithm , 2005 .

[19]  Hongmei Yu,et al.  A combined genetic algorithm/simulated annealing algorithm for large scale system energy integration , 2000 .

[20]  Daniel R. Lewin,et al.  A generalized method for HEN synthesis using stochastic optimization. II. : The synthesis of cost-optimal networks , 1998 .