水壶用久了,底部和壶壁会结成一层水垢,严重影响水壶的传热效率,浪费燃料,水垢每增厚1毫米,燃料消耗就要增加5%。热水瓶胆内附上一层水垢会影响保温。锅炉出现水垢后若不及时清除,水垢破裂会使锅炉局部过热,超过金属允许的温度导致锅炉损毁,严重时会引起锅炉爆炸。因此,我们必须及时清除水垢。 When the kettle is used for a long time, the bottom and the pot wall will form a layer of scale, which will seriously affect the heat transfer efficiency of the kettle and waste fuel. Each time the scale is thickened by 1 mm, the fuel consumption will increase by 5%. A layer of scale attached to the thermos bile will affect the insulation. If the boiler does not clear in time after scale appears, the scale cracking will cause local overheating of the boiler. If the temperature exceeds the allowable temperature of the metal, the boiler will be damaged, causing serious boiler explosion. Therefore, we must remove scale in time.