残留在烟道出口并被排放到大气中的可燃物,相当于锅炉燃料的13％高热值。其中许多热量可以用冷凝烟气中的水蒸气的方法回收,使其用于给水加热,空气预热或生产工艺用热水。虽然在这方面,美国的技术被认为是有所创新的,但目前欧洲也已应用了500多台此类设备,并收到了可观的节能效果。 The combustibles that remain at the exit of the flue and are discharged into the atmosphere correspond to 13% of the heating value of boiler fuel. Many of these heat can be recovered by condensing the water vapor in the flue gas, making it useful for water heating, air preheating or hot water for the production process. Although in this regard, U.S. technology is considered to be innovative, more than 500 such devices have been used in Europe and considerable energy savings have been achieved.