ENERGY OPTIMIZATION TECHNOLOGIES AND STRATEGIES FOR CENTRIFUGAL WATER-COOLED CHILLER SYSTEM IN COMMERCIAL BUILDINGS

Centrifugal water-cooled chiller systems, an essential component providing indoor environmental quality (IEQ) and enhancing occupant productivity in large scale buildings, consume approximately 50% of a building's total energy. This has stimulated research into reducing the energy consumption required for air conditioning while maintaining the desired level of IEQ with minimal to no human interference. The relationship between thermal energy and electrical energy in this system can be used to reduce the energy consumption of the system. This relationship involv es the overall design and operating parameters of rotating equipment, static equipment for heat transfer as well as how these pieces of equipment operate in relation to each other. This review provides a holistic approach to chiller system design and the potential it has to improve energy efficiency of the system. Based on the research, energy efficient equipment selection, the use of new technology, energy efficient design techniques/practices and the use of control systems will optimize the energy consumption of the HVAC system.