Modelling of heat transfer in the region of convection-controlled film boiling

On the basis of experimental investigations, a model is derived, which desc ribes the momentum and the heat transfer in the region of convection-contro lled film boiling. The model considers the slip of the liquid flow at the h ot wall surface and the influence of the movement of the vapour/liquid inte rface on the heat transfer using measurements of intensive cooling of fast moving wires. The description of the influence of liquid subcooling is based on measureme nts of Huang [1]. The proposed model is suitable for predicting the pressur e drop and heat transfer well in cases of similar conditions. It therefore can be used in designing tools for cooling lines.