三维肋管空预器在热处理炉中的应用实践

Application of Three-dimensional Ribbed Tubular Air Pre-heater in the Heat Treatment Furnace

介绍了采用新型的高效节能换热元件三维肋管制造的空气预热器在热处理炉中回收烟气余热的应用实例,分析指出:空气预热器的传热系数为55 W/(m^(2)·℃),约为光管换热器的2倍,所需传热面积将减少一半,有利于紧凑布置;空气预热温度可达400℃以上,天然气节能率约为14%,经济效益显著。

An application example of air pre-heater is introduced in heat treatment furnace,which is made by three-dimensional ribbed tubes as a new type of high efficiency and energy saving heat exchange element.The results indicates that:the heat transfer coefficient of air pre-heater is about 55 watts per square meter per degree,which is two times of the light tube heat exchanger,and the required heat transfer area will be reduced by half in favor of a compact arrangement;air pre-heat temperature can reach above four hundred degree;the energy-saving rate of natural gas is about fourteen percent;and the economic is remarkable.