焚化廠內眾多的大型轉動機械（汽輪發電機機組、空氣壓縮機、誘引風機等），均需要冷卻水來冷卻消除其運轉所產生的熱，冷卻效果不佳將導致設備跳脫而影響廢棄物焚化製程系統的運轉。本研究是藉由實驗方法，針對目前高雄市南區資源回收廠設備冷卻水系統（為密閉式）運轉上所遭遇的瓶頸研究探討，避免以自來水或補充水噴灑降溫設備冷卻水塔之可行性，及分析其相關因素並提出改善方案。經分析結果，較佳的改善方式可從三方面著手：1、評估可容許最高的冷卻水塔出口溫度值。2、分析節流冷卻水的可行性。3、評估風扇最佳的節能操作模式。
實驗發現，將冷卻塔之出口高溫警報(T+)值由40℃上修至42℃，出口低溫警報(T-)值由35℃上修至39℃，冷卻水塔的風扇僅須啟動4~6台即可（共設置8台冷卻風扇），且不需以外部水源噴灑散熱鰭管來降溫。且經分析節流冷卻水的可行性與必要性後，則結果沒必要再進一次節流或關閉部份設備的冷卻水。
至於測試密閉式冷卻水塔風扇後，最節能的運轉分配模式，為冷卻水塔在啟動相同的風扇數下，運轉風扇的分佈愈均勻，其整體冷卻效果愈好；反之，運轉風扇愈集中，其整體冷卻效果愈差。

The heavy machinery of waste management plant, such as steam turbine generator, air compressor, the luring fans, etc., all need the cooling water to eliminate the heat which generated by its operation.
By experiments, this study focuses on removing the bottlenecks of the cooling water efficiency of Southern District Waste Management Plant, Environmental Protection Bureau, Kaohsiung City Government. According to them, we analyze and propose the improvement plan to avoid supplying additional water to cooling down our closed cooling tower. We conclude three improvement way by our experimental result. First of all, we try to find the allowing highest temperature value of our cooling tower. Then, we analyze the possibility of saving the cooling water. Finally, we assess the best operating energy efficiency of ventilator.
It is found that the cooling tower fan is only required to start 4-6 sets to achieve the lowing temperature without spraying external water to cool the heat pipe fins on condition that its terminal alarm temperature(T +) adjusted from value 40 ℃to 42 ℃ and the entrance alarm value (T-) from 35 ℃to 39 ℃. After analyzing the throttling efficiency of the cooling water, there is no necessary to add extra throttle or shut off part of equipments.
In accordance with the closed numbers of the cooling tower fan test, the most energy-efficient way for the operation arrangement of the cooling tower is widely spread. Under the same numbers of fans, there is better cooling effects if the fans are wide-ranging. Contrarily, they will be bad in their cooling efficiency when they are arranged too closed.

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