1. 公司動態【COMPANY NEWS】

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    • 閉式冷卻塔的防凍措施注意哪些?
    • 本站編輯:杭州菲8平台注册製冷設備有限公司發佈日期:2020-10-10 09:41 瀏覽次數:

    在一些辦公項目中的數據機房空調及酒店項目的冷庫常會採用閉式冷卻塔,而且一般這種冷卻塔需要常年運行,所以在冬季運行時要考慮防凍措施,而對於不用的冷卻塔可以排淨排空。

    In some office projects, the data room air conditioning and the cold storage of hotel projects often use closed cooling tower, and generally this kind of cooling tower needs to operate all year round. Therefore, anti freezing measures should be taken in winter operation, and the unused cooling tower can be drained.

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    閉式冷卻塔的排熱能力是按照夏季最熱的天氣來設計選型的,在其它季節,特別是冬季,排熱能力就可能過大了。閉式冷卻塔運行時,即使環境溫度高於零度,閉式冷卻塔也可能將管內水降至零度,甚至結冰。閉式冷卻塔內循環或噴淋水結冰,可能引起配管、換熱管和塔內其它部件的破裂,爲了防止這類事故的發生,冬季設備防凍,尤其是北方地區的設備防凍就特別重要。

    The heat removal capacity of closed cooling tower is designed and selected according to the hottest weather in summer. In other seasons, especially in winter, the heat removal capacity may be too large. When the closed cooling tower is running, even if the ambient temperature is higher than zero, the closed cooling tower may reduce the water in the pipe to zero, or even freeze. Freezing of circulating or spraying water in closed cooling tower may cause the rupture of piping, heat exchange tube and other parts in the tower. In order to prevent such accidents, it is particularly important to prevent the equipment from freezing in winter, especially in northern areas.

    閉式冷卻塔主機由殼體、換熱器、風機、噴淋水泵、收水器、水槽及管路閥門等零部件組成。閉式冷卻塔將冷卻塔和熱交換的功能合在一起,將工藝流體的溫度降低到相當接近空氣溼球溫度情況下,系統工作時。需要冷卻的工藝流體在蛇形的熱交換器盤管內部流動,外部有噴淋系統以持續溼潤盤管表面。噴淋到盤管上的水流經一段具有高效冷卻作用的PVC熱交換層進行冷卻後再落至集水盤中以再循環利用。空氣同時吸入並通過盤管和PVC熱交換層,使得一部分水蒸發。氣流中所夾帶的所有水分均由飛濺水擋水板進行回收,並送回至集水盤。藉由蒸發,將熱量從噴淋水中帶走,進而冷卻盤管及盤管中工藝流體。

    The main engine of closed cooling tower is composed of shell, heat exchanger, fan, spray water pump, water collector, water tank and pipeline valve. Closed cooling tower combines the function of cooling tower and heat exchange, and reduces the temperature of process fluid to close to the wet bulb temperature of air. The cooling process fluid flows inside the serpentine heat exchanger coil, and the external spray system is used to continuously wet the coil surface. The water sprayed on the coil is cooled by a section of PVC heat exchange layer with high cooling effect, and then falls to the water collecting tray for recycling. Air is sucked in at the same time and passes through the coil and PVC heat exchange layer, causing part of the water to evaporate. All water entrained in the air flow is recovered by the splash water baffle and sent back to the water collecting tray. By evaporation, the heat is removed from the spray water to cool the coil and the process fluid in the coil.