A Mathematical Approach for the Design ofRefrigerated Water Network and Chiller Operating Strategy

• Main Authors: Meng-Da Lee, 李孟達
• Other Authors: 陳誠亮
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/16452287887614449255

碩士 === 國立臺灣大學 === 化學工程學研究所 === 99 === This work aims to develop a mathematical model for the synthesis of refrigerated water network systems and chiller operating strategy simultaneously. First of all, we proposed one model which includes all possible configurations of refrigerated water network system under all conditions. By setting relevant constraints up for each part of the superstructure, the design problem of refrigerated water network system is formulated as a mixed-integer nonlinear program that can be solved for optimal configuration of refrigerated water network. Objective functions 1 and 2 are considered which involving the mimnimization of refrigerated water supply and obtaining a unique network structure. Furthermore we also proposed a superstructure for chillers'' operation, considering different operating upper and lower bounds. In this work, two objective functions are considered to minimize fixed and variable operating cost. Finally, numerical examples are used to show that the proposed approach can provide the optimal design of refrigerated water network system and chiller operating strategy.