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对于各种间歇使用的加热设备,在能量平衡计算中必须考虑其壁面保温材料的蓄热损失。由于设备使用的非连续性,各个壁面处于非稳定导热状态,壁面内部温度分布随时间而变化。如果采用稳态导热计算显然误差很大,且不符合实际情况。为了准确求得壁面内部的温度分布,对非稳态导热方程((?)/(?)t)=a((?)/(?)x)采用有限差分方法来求解。系统
For a variety of intermittent use of heating equipment, in the energy balance calculation must consider the wall heat preservation material heat loss. Due to the non-continuous use of equipment, each wall is in an unstable thermal state and the temperature distribution inside the wall varies with time. If using steady-state heat transfer calculation is obviously a big error, and does not meet the actual situation. In order to obtain the temperature distribution inside the wall accurately, the finite difference method is used to solve the unsteady heat conduction equation () / (t) = a ((?) / (? system