| Summary: | 碩士 === 國立高雄應用科技大學 === 電機工程系博碩士班 === 106 === The subject in this study was an IC packaging and testing plant in Kaohsiung City. This study investigated the water-side system of the air conditioning system in this plant and monitored the statistics of the water-side system to instantly analyze the optimal operating model. The goal was to ensure optimal operation of the air conditioning facilities in the plant, avoid energy loss from operation in improper conditions, and achieve energy saving and carbon reduction.
In the experiment, the water system was first constructed. The inverter, MCC power distribution panel, and a digital power meter were installed in this stage. A chiller optimized program was implemented in the central control system. The monitoring computer was able to record the real-time data, historical values, and the alarm value of each signal to enhance the energy-saving efficiency. The outside air condition and load demand of the water-side system would be detected every minute. Through analysis and computing, the optimal parameters for the chillers, chilled water piping, and PUMP (including cooling water pumps, chilled water pumps, and cooling tower motors) under load conditions could be obtained. The difference in energy consumption between the normal mode and the optimized mode of operation was also analyzed.
Results showed that the water-side system of air conditioning systems had an average energy-saving rate of 8.83% from January to December 2017. During this 12-month period, the energy-saving rate was lowest in August (4.79%) and highest in January (11.98%). The high energy consumption of the chillers during the summer season affected the overall energy-saving rate. Through use of an inverter control and reconfiguration of water-side capacity, the chiller plant system decreased its annual power consumption from 2,115,216 KWH to 1,932,685 KWH. The reduction of power consumption by 182,530 KWH suggested a reduction of carbon emissions by 116,454 KG. This confirmed that the inverter control is better than the fixed-frequency control for the chiller plant system.
Keywords: inverter, energy-saving rate, optimization, air-conditioning system
|
|---|
