In the process of cleaning, after the discharged dirty hot water enters into a backwater tank, the hot water can preheat the cold water in a preheating tube and the residual heat is fully utilized.
清洗中所排出的污热水进入回水箱后，可对预热管内的冷水进行预热，能充分地利用余热。
Depending upon the requirements of cold end temperature of tube wall of air preheaters, the method of cold air preheating and the criterion of selection for air heater are put forward.
根据空气预热器冷端壁温的要求，提出了冷风预热的方法以及暖风器选择的原则。
应用推荐