水垢可以降低蒸汽发生器热效率
The scale can reduce the thermal efficiency of steam generator
放出的热量不能敏捷传递给炉水，因而很多热量被烟气带走，构成排烟温度添加，添加排烟热损失，使
蒸汽发生器热效率降低。
The heat that is released can't be passed to the furnace, so a lot of heat is carried away by flue gas, which can be added to the exhaust temperature and added exhaust heat loss, which will reduce the thermal efficiency of the boiler.
在这种情况下，要想保住蒸汽发生器额定参数，就必须更多地向炉膛投加燃料，并加大鼓风和引风来强化焚烧。其结果是使很多未彻底焚烧的物质排出烟囱，无形中添加了燃料消耗。我们知道，锅炉炉膛容积和炉排面积是必定的，不管投加多少燃料，燃料焚烧是受到限制的，因而锅炉的热效率也就不可能进步。
In this case, to keep the boiler's rated parameters, more fuel must be added to the furnace, and the wind and wind should be strengthened to strengthen the burning. The result is that many of the unburned substances are expelled from the chimney, adding fuel consumption to it. We know that boiler furnace volume and floor area are certain, no matter how much fuel is added, fuel incineration is limited, so the thermal efficiency of boilers is impossible to improve.
蒸汽发生器中水垢结生得越厚，热效率就越低，燃料消耗就越大。试验数据标明，当结生水垢达1.5毫米时，就要多消耗6%的燃料；为5毫米时，燃料消耗就要到达15%；为8毫米时，燃料消耗量则增至34%。
The thicker the scale in the boiler, the lower the thermal efficiency and the greater the fuel consumption. Test data indicate that when the water scale reaches 1.5mm, it will consume 6% more fuel. For 5mm, the fuel consumption will reach 15%; For 8 millimeters, fuel consumption increased to 34 percent.
