A mechanistic heat transfer model for horizontal two-phase flow

摘要

In this study, convective heat transfer for gas-liquid two-phase flow was investigated experimentally and theoretically. Experimental data on convective two-phase heat transfer, as well as flow pattern and liquid holdup, were acquired with a crude oil-natural gas system at cooling conditions using a large diameter (52.5 mm ID.), high pressure (3.1 kPa) test facility. A comprehensive mechanistic heat transfer model was developed by flow pattern dependent approach for stratified, intermittent, annular and dispersed bubble flows in horizontal pipes. The model is capable of predicting flow pattern first and then predicting convective heat transfer coefficient based on the predicted flow pattern. Comparing with experimental data, the model can predict two-phase flow heat transfer coefficient within 35% error. The model shows better overall performance than existing correlations.