电热水锅炉水垢有哪些危害?

1、电热水锅炉http://www.veamadrid.com/水垢的导热性能极差,其导热系数比一般锅炉刚才小几十倍,甚至几百倍,锅炉结构后会使受热面传热情况恶化。排烟温度升高,降低锅炉热效率,浪费燃料。
Electric water boiler scale thermal performance very poor, its thermal conductivity is smaller than the average boiler just a few times, even hundreds of times, the situation will worsen after the heating surface heat boiler structures.Exhaust gas temperature, reducing the thermal efficiency, waste fuel.
2、电热水锅炉正常运行时,金属受热后很快将热量传递给锅炉金属,壁面与锅炉水的温差30--100℃之间,结生水垢后金属受热面吸收的热量由于受到水垢层阻碍很难传递给锅炉,因而壁温急剧升高,强度急剧下降,当锅炉内生了3mm后的水垢时,钢材温度有280℃上升到580℃而抗拉强度有400兆帕(Mpa)下降到100兆帕(Mpa),引起钢材内部组织变化。
Electric water boiler is operating normally, and soon after the metal is heated to transfer heat to the boiler metal, between the wall and the boiler water temperature difference 30--100 ℃, knot raw scale metal heating surface after heat absorption is difficult due to the scale layer hampered passed to the boiler, thus a sharp rise in the wall temperature, a sharp decline in strength, when the boiler scale 3mm after birth, the steel temperature rose to 280 ℃ and 580 ℃ tensile strength of 400 MPa (Mpa) down to 100 megabytes Pa (Mpa), causing changes in the internal organization of the steel.

3、由于电热水锅炉产热不良是蒸发量下降,减小锅炉出力,出力小的管子流通面积减小,增加水循环阻力,严重时将管子完全堵死造成爆管事故。
Because electric water boiler heat production decreased adverse evaporation, reducing the boiler output, output of small tubes circulation area is reduced, increasing the circulation resistance, serious tubes completely blocked pipe explosion caused the accident.

4、为了电热水锅炉http://www.veamadrid.com/除垢需经常停炉洗炉增加检修费用,由于经常采用机械方法和化学方法,会使受热面损伤,缩短锅炉的使用年限,结垢十分严重时甚至是锅炉报废。
For electric water boiler furnace shutdown need regular cleaning maintenance costs increase, due to the frequent use of mechanical and chemical methods, heating surface damage will shorten the useful life of the boiler, scaling is very serious or even scrapped boiler.


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