Characteristics of enhancement of flow boiling heat transfer with kerosene inside internally ribbed tube

To meet the need of modifying the boiling equipment for petrochemical industry, flow boiling heat transfer experiments with kerosene in smooth tube and internally ribbed tube were conducted respectively under the condition of 3×105 Pa(absolute atmosphere pressure). It shows that the flow boiling heat transfer coefficients in the internally ribbed tube are 1.6-2 times that in the smooth tube and flow boiling heat transfer under the condition of smaller temperature difference can be achieved in the internally ribbed tube. On the basis of the experimental results, a correlation of flow boiling heat transfer coefficient of kerosene in the internally ribbed tube was proposed. The characteristics of flow boiling heat transfer with kerosene and the mechanism of enhanced heat transfer in internally ribbed tube were analyzed.