@inproceedings{a1d8e537eaad45dfaaf9829d4f56b4c0,
title = "Optimal environmental performance of water-cooled chiller system with all variable speed configurations",
abstract = "This study investigates how the environmental performance of water-cooled chiller systems can be optimized by applying load-based speed control to all the system components. New chiller and cooling tower models were developed using a transient systems simulation program called TRNSYS 15 in order to assess the electricity and water consumption of a chiller plant operating for a building cooling load profile. The chiller model was calibrated using manufacturer's performance data and used to analyze the coefficient of performance when the design and control of chiller components are changed. The NTU-effectiveness approach was used for the cooling tower model to consider the heat transfer effectiveness at various air-to-water flow ratios and to identify the makeup water rate. Applying load-based speed control to the cooling tower fans and pumps could save an annual plant operating cost by around 15\% relative to an equivalent system with constant speed configurations.",
keywords = "Simulation, Variable speed control, Water-cooled chiller",
author = "Yu, \{Fu Wing\} and Chan, \{Kwok Tai\}",
note = "Publisher Copyright: Copyright {\textcopyright} 2010 by the Japan Society of Refrigeration and Air Conditioning Engineering (JSRAE).; 5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010 ; Conference date: 07-06-2010 Through 09-06-2010",
year = "2010",
language = "English",
series = "5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System",
publisher = "Japan Society of Refrigeration and Air Conditioning Engineering (JSRAE)",
booktitle = "5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia",
}