| Summary: | 碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 99 === For larger air-conditioning systems, combinations chiller units are often used to improve the operating efficiency. As the COP of a water chiller at part load is significantly different from that at full load, effects of partial load control on the energy performance are investigated by COP zoning at part load. This research uses a typical building case in Taipei. The computer program eQUEST is used to obtain the monthly average air-conditioning load for the building case. Average and percentage distribution chiller loads strategies are used for the combination of chiller load. The average COP of the chillers at each range of partial load is used for multiple chillers system control.
It has been found that using the average COP zoning analysis; the best control would allow the chillers to operate eight months in zone A, three months in zone B and one month in zone C. The average annual COP is 5.66, and the annual energy consumption is 504,136.1kWh. However for the worst control none of the monthly falls in zone A, but ten months fall in zone B and two months fall in zone C. The average annual COP falls in zone B. In comparison, the difference between the best and the worst cases are 22.7% and 20.7% respectively for the annual COP and annual chiller power.
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