The prevalent over-temperature caused tube bursting of high-temperature heating surface in large-capacity boilers in recent years has seriously endangered the safe and economic operation of units.
近年来，大容量锅炉高温受热面超温爆管现象普遍，严重危及了机组的安全、经济运行。
Low consumption, high heating efficiency, big capacity, little location.
能耗低、效率高、量大、地面积小。
Secondly, the heating layer heating time is prolonged largely by using high-capacity external battery.
其次，采用大容量的外置电池使得发热层的发热时间也大大延长。
Secondly, the heating layer heating time is prolonged largely by using high-capacity external battery.
其次，采用大容量的外置电池使得发热层的发热时间也大大延长。
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