Study on Operation and Control of Large Multi-Chiller System

Abstract:

In semiconductor factories and electronics factories, a large multi-chiller system is needed to satisfy strict cooling load requirements. In order to save energy, it is worthwhile to design the chilled water system operation. In this paper, a design methodology is developed for multi-chiller system in which chiller units consist of different cooling capacities chiller that run in parallel. The optimal design problem can be expressed as a mixed integer nonlinear programming (MINLP) which minimizes the system energy consumption within a future time period. In order to solve this complex problem, the two-stage strategy is employed to divide the problem into a scheduling stage and an operating stage. Instead of a lag scheme obtained with general method, this forecasting scheme consists of a series of optimal scheme at each sub-time period and can offer operating reference for operator. The effectiveness of the proposed method is illustrated by an industrial case

• Periodical: Advanced Materials Research (Volumes 335-336)
• Pages: 1273-1278
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.335-336.1273
• Online since: September 2011
• Authors: Yan Yue Lu, An Ping Liao
• Keywords: Chilled Water System, Chiller System, Operation Scheme, Optimal Design, Saving Energy

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