A Mathematical Approach for the Design of Refrigerated Water Network and Chiller Operating Strategy
Date Issued
2011
Date
2011
Author(s)
Lee, Meng-Da
Abstract
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.
Subjects
Optimization
Superstructure
Refrigerated Water Network Systems
Chiller
Mixed-integer nonlinear programming (MINLP)
Type
thesis
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