Studies on Simultaneous Optimization of Integrated Energy and Water Systems

• Main Authors: Chih-Yao Lin, 林志曜
• Other Authors: Chuei-Tin Chang
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/82406276105199186999

碩士 === 國立成功大學 === 化學工程學系碩博士班 === 95 === A systematic design methodology is developed in this work for simultaneously synthesizing (1) the direct and indirect heat-exchange network and (2) the multi-contaminant water-allocation and heat-exchange network (WAHEN) in any chemical process. Specifically, a modified state-space representation is adopted to capture the structural characteristics of integrated HEN or WAHEN, and a mixed-integer nonlinear program (MINLP) is formulated accordingly to minimize the TAC of the network design. To enhance the solution quality and efficiency, a stochastic perturbation procedure is introduced to generate reliable initial guesses for the deterministic optimization procedures, and cluster analysis and artificial interaction are applied to improve the solution. Also, an efficient algorithm is developed to obtain the global optimum of this MINLP model with high creditability. Several examples are presented in this paper to demonstrate the validity and advantages of the proposed approach.