Abstract
Abstract In this study, the optimal control method for minimizing of energy consumption for central cooling systemwith proper occupant comfort level is researched by simulation. The optimal control method is that the optimal settemperatures such as the condenser water temperature, supply air temperature, and chilled water temperature with environment variable change such as outdoor air dry-bulb and wet-bulb temperatures are obtained by suggested optimal control algorithm with maximum and part building load. The TRNSYS program is used for system modelingand the control performances with the suggested optimal control method are compared with the existing control method of fixed set points. The suggested optimal control method shows better responses in energy consumption in comparison with existing control ones. Key Words : Central Cooling System, Control variables, Environment variables, Optimal Control, Optimal Set Temperatures * Corresponding Author : Byung-Cheon Ahn(Gachon Univ.) Tel: +82-31-750-5309 email: bcahn@gachon.ac.kr Received April 29, 2015 Accepted June 11, 2015Revised (1st May 20, 2015, 2nd June 2, 2015)Published June 30, 2015
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