本論文旨在探討應用壓差控制策略於冰水系統節能，本研究主要考量冰水泵送能力與冰水系統負載操作點匹配，並分析壓差值對於冰水系統運轉調載裕度之影響，其中本文透過冰水泵運轉負載分佈圖闡述壓差控制重要性，並基於系統測試結果調整壓差值，以觀察冰水泵之壓差回授值與冰水主機額定負載電流百分比變化關係，俾以作為評估冰水系統調載能力之重要依據，而為驗證本文所提方法之可行性，本文統合實驗結果，詳以探討整體冰水系統效率之變化趨勢，進而觀察冰水系統效率輸出值之分佈情形，研究成果可協助冰水系統節能策略施行時之應用參考。

This thesis applies a differential pressure control strategy for energy- saving in a chilled system. By considering matching the operation point with chilled pumping capacity and chilled system loading, the study is devoted to analyze the influences of differential pressure value on the regulating margin of chilled system operation. The study begins with the investigation of the load distribution diagram of chilled pumping. This is followed by the inspecting the relationships between feedback differential pressure values and rated load amperes ratios of the chiller. Hence, the capability of load regulating of this chilled system can be accordingly evaluated. To validate the feasibility of this proposed system, several experiments are made and their test results are summarized to explore the varying trend of the efficiency of the whole chilled system. The distribution condition of the output efficiency of the chilled system can be meanwhile observed. The outcome of this study may assist in the energy-saving of a chilled system.

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