Energy Conservation for Chiller Plants by Implementation of Variable Speed Driven Approach in an Industrial Building

AbstractThe objective of this study is to present the energy-saving approach on performance evaluation of the chilled and cooling water system retrofitted by a variable speed driven (VSD) chilled and cooling water system. Field measurements of a chilled and cooling water system with 12 chillers (17020 refrigeration tons totally) have been carried out at a high-tech industrial building in the Science Park of Taiwan. The on-site real-time data from supervisory control and data acquisition system for one year has been applied to evaluate the energy-saving while conducting the VSD approach under different ambient air condition for the HVAC system. The results revealed that it is feasible to achieve satisfactory energy-saving of 5-17% for higher temperature (12 oC) chilled water system and 5-30% lower temperature (6 oC) chilled water system depending on ambient weather condition