FLOW BOILING − A SIMPLE CORRELATION FOR CONVECTIVE HEAT TRANSFER COMPONENT
A simple new correlation is presented for the convective component of flow boiling heat transfer. This correlation relates the F factor (the ratio of two phase to single phase heat transfer coefficient) to a parameter based on quality, reduced pressure ( pr = p/pc) and molecular weight of a fluid. Apart from its simplicity it offers an extra advantage, over the other correlations, of being able to predict the data equally well for water, organic fluids and refrigerants. The correlation appears to work well for both vertical and horizontal flows with channel geometries as widely different as tubes and plate-fin passages.