變頻冷卻水塔之節能研究

Energy Conservation Research of Cooling Tower Based on Variable Frequency

林進煌(Chin-Huang Lin)

指導教授 ： 張永宗

國立臺北科技大學/機電學院/冷凍空調工程系所/碩士(2006年)

摘要

石油價格上漲，電費蠢蠢欲動有漲價的趨勢，所以該如何節省能源、電費是研究人員的目標，在建築中的電力負載乃相當重要的部分，是相當值得研究的領域。本文研究是採用空調系統實際量測之數據，將其空調冷卻水塔風扇耗能建立線性迴歸方程式，並用二次及三次迴歸來加以探討變頻與非變頻時耗能分析，而採用數據必須在相同的外氣濕球溫度、冷卻水出水溫度及負載基準下，做分析比較。無論使用二次或三次線性迴歸分析式都能有效模擬出kW/RT，模擬的功率與實際功率其準確率高達99.8%。
在空調節約方面有相當多的方法，使用變頻器也是其中的一種，然而卻無法預知使用變頻器後能得到多少的節約效果，因此本研究利用線性迴歸的方法，能有效模擬出空調冷卻水塔風扇的耗能方程式，並成功驗證出空調冷卻水塔風扇使用變頻器所預測節省的耗電量。透過此種方法，讓使用者以數據來看到節能效果，使節省能源的做法更有效率。

關鍵字

空調系統 ； 空調冷卻水塔 ； 變頻器 ； 節能效果

並列摘要

The price of petroleum has been rising, and there is a tendency to hike the electricity bill. How to save energy and cost down electricity fee has become a main topic to study. Nowadays, air conditioning plays a key role in architecture and is used for creating a more comfortable environment. Therefore, this region is worth to do further research. This paper adopts measured data of air condition system and the consumption energy of fan of cooling towers to found linear regression equation. Also, second regression and third regression is used to analyze consumption energy in the plant, where have frequency conversion or not. The procedures of the study are taken under the same outside wet bulb temperature, output temperature, and loading. Therefore, it is effective to simulate and get kW/RT by using second and third order regression equation, and the accuracy rate is nearly 99.8%.
There are many methods to lower the consumption of air-condition system, like frequency converter. However, how efficient it works still remains unknown. Therefore, it is hoped that by using linear regression, consumption energy of fan of cooling towers could be stimulated effectively. Also, how much electricity consumption would be lowered by using cooling tower fans with frequency converter could be tested and verifying successfully. As a result, frequency converter will be widely applied to the fan of cooling tower through linear regression method. The proprietor can also get the result of saving consumption energy that was unprecedented and make a step forward in saving energy.

並列關鍵字

Variable Frequency ； Cooling tower ； Chiller

參考文獻

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