摘要：【中文摘要】 在兩套管路特性基本相同的冷卻水系統和兩臺相同型號的冷卻水泵上,分別進行水泵變頻調速改造和更換小水泵改造方案的運行試驗測試。試驗結果表明,兩種方案均有明顯的節能效果,但是更換小水泵改造方案效果更佳。 【英文摘要】 The modifications with frequency conversion speed regulation and replacing a smaller pump are done for the pump of a water cooling system.Testing results show that each modification has obvious energy saving effect.But the second mothod i.e.replacing the smaller pump,performs better. 【中文關鍵詞】 中央空調系統; 水泵改造; 節能; 變頻調速【英文關鍵詞】 central air-conditioning system; pump modification; energy saving; frequency conversion speed regulation