釜式再沸器壳侧管束临界热负荷模拟计算

基于管束沸腾临界点形成的干涸机理，建立了利用釜式再沸器壳侧循环流动与管束传热的分格模型计算管束临界热负荷的方法，考察了管束上方液面高度、管束直径、管间距等对管束临界热负荷的影响，并对管束沸腾临界点形成的干涸机理进行了探讨。

Simulation calculations on critical heat flux outside tube bundles in a kettle reboiler

On the basis of the dryness mechanism on the formation of critical points,the calculating method for critical heat flux was presented using the grid model for circulation flow and boiling heat transfer outside a tube bundle in a kettle reboiler.The effect of height in liquid level above bundles,bundle diameter and tube layout on critical heat flux were examined.The dryness mechanism on the formation of boiling critical points outside tube bundles was approached.