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工業技術研究院

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技術名稱: 空調冷卻水塔智慧節能控制技術

技術簡介

冷卻水塔智慧節能控制技術,主要有兩項應用技術水塔啟停控制技術與水塔變頻與啟停同步控制技術。水塔啟停控制主要利用戶外濕球溫度與趨近溫度設定來自動找出合適的出水溫目標,並結合dead-band控制與隨機輪詢功能來進行水塔的開關控制。水塔變頻與啟停同步控制技術亦是利用利用戶外濕球溫度與趨近溫度設定來自動找出合適的出水溫目標,並內建變頻模糊技術與dead-band控制來進行水塔風扇的變頻與啟停控制。此外,趨近溫度可採排程設定或自適應變動計算。

Abstract

The proposed technology includes two technologies: 1*Cooling tower on-off control technology and 2*Cooling Tower VFD and on-off control technology. 1*Cooling tower on-off control technology uses wet-bulb temperature and trend setting to figure out feasible target temperature. Using dead-band control and random selection function can generate optimal decision of on-off control for each cooling tower. 2* Cooling Tower VFD and on-off control technology integrates two independent strategies: fuzzy control and dead-band control to figure out optimal fan frequency and on-off decision for each of cooling tower.

技術規格

1.水塔啟停控制技術: ‧利用戶外溫濕度計算濕球溫度 ‧利用戶外濕球溫度與趨近溫度設定水塔出水溫目標,進行水塔開關控制 ‧趨近溫度可採排程設定或自適應變動計算 ‧水塔開關採dead-band控制,並具備溫度趨勢判斷,縮短溫度變化範圍 ‧多台水塔開關採隨機輪巡方式,使其運轉時間皆相似 2.水塔變頻與啟停同步控制技術: ‧利用戶外溫濕度計算濕球溫度 ‧利用戶外濕球溫度與趨近溫度設定水塔出水溫目標,進行水塔開關與變頻控制 ‧水塔變頻採模糊控制技術,藉由出水溫值與設定出水溫目標值來輸出水塔風扇頻率變化值 ‧趨近溫度可採排程設定或自適應變動計算 ‧水塔開關採dead-band控制,並具備溫度趨勢判斷,縮短溫度變化範圍 ‧多台水塔開關採隨機輪巡方式,使其運轉時間皆相似

Technical Specification

Control range: outlet temperature of Cooling water can obtain the required target temperature, and Control mode: frequency control or on-off control of tower fan. Cooling tower on-off control technology:  Using outside temperature to calculate wet-bulb temperature  Using wet-bulb temperature and trend setting generate feasible target temperature to control the on-off operation of each cooling tower.  Trend temperature can be set by schedule control or by self-adaptive calculation.  On-off operated by dead-band control, it contains trend analysis strategies to reduce deviation range of outlet temperature.  Using random selection strategy to keep similar operation time for each cooling tower. Cooling Tower VFD and on-off control technology:  Using outside temperature to calculate wet-bulb temperature  Using wet-bulb temperature and trend setting generate feasible target temperature to control the on-off operation and fan frequency variation of each cooling tower.  Using Fuzzy control to generate fan frequency variation by adopting difference between real outlet temperature and target temperature of cooling tower.  Trend temperature can be set by schedule control or by self-adaptive calculation.  On-off operated by dead-band control, it contains trend analysis strategies to reduce deviation range of outlet temperature.  Using random selection strategy to keep similar operation time for each cooling tower.

技術特色

現有系統之水塔節能控制多採用PID控制方式針對水塔出水溫進行,其反應時間較慢故其節能成效有限。本技術主要是以模糊控制方式針對水塔風扇運轉頻率或水塔風扇啟停來進行節能控制,並同時輔以濕球溫度來進行水塔出水目標溫度自動調整。

應用範圍

適用於空調圖控系統、能管系統整合、網路監控平台、節能相關產業等

接受技術者具備基礎建議(設備)

空調產業相關設備與效率檢測設備。

接受技術者具備基礎建議(專業)

具備空調系統、圖控廠商、節能相關領域研發工程人員與銷售業務。

技術分類 02 D無線感測系統監控

聯絡資訊

聯絡人:陸忠憲 智慧節能系統技術組

電話:03-5915022 或 Email:TonyCHLu@itri.org.tw

客服專線:+886-800-45-8899

傳真:03-5820050

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