There are plenty of literature research studies investigating two-phase heat transfer characteristics of propane under varying operational conditions. Based on the collected data retrieved from the experimental measurements, several flow boiling heat transfer correlations have been proposed up to now. However, the prediction accuracy of the proposed correlations for propane refrigerant is still in question as most of the correlation is developed for their measurements or derived for a limited range of operational conditions. To conquer this drawback, this study proposes a new flow boiling heat transfer model for smooth tubes based on a propane experimental database compiled of 2179 points obtained from different eighteen laboratories around the world. Operational conditions of the database cover mass fluxes between 50 and 600 kg/m²s, saturation temperatures between − 35.0 and 43.0 °C, heat fluxes between 2.5 and 227.0 kW/m², hydraulic diameters between 0.3 and 7.7 mm, and thermodynamic qualities 0.01 to 0.99. Estimations performed by the new flow boiling model have been compared to those obtained by the literature correlations, and comparative results indicate that the proposed model surpasses the existing flow boiling in terms of prediction accuracy with a mean absolute error of 19.1% and mean relative error of 1.7%.

有大量文献研究研究了在不同运行条件下丙烷的两相传热特性。到目前为止，基于从实验测量中获得的收集数据，已经提出了几种流沸腾传热的相关性。但是，丙烷制冷剂的拟议相关性的预测准确性仍存在疑问，因为大多数相关性是针对它们的测量而开发的，或者是针对有限范围的运行条件而得出的。为了克服这一缺点，本研究基于丙烷实验数据库，提出了一种新的光滑管流动沸腾传热模型，该数据库汇编了从全球18个实验室获得的2179个点。数据库的运行条件覆盖了50至600 kg / m的质量通量² s，饱和温度在− 35.0和43.0°C之间，热通量在2.5和227.0 kW / m ²之间，水力直径在0.3和7.7 mm之间，热力学性质为0.01至0.99。新的流动沸腾模型进行的估计已与文献相关性进行了比较，比较结果表明，该模型在预测准确度方面超过了现有的流动沸腾，其平均绝对误差为19.1％，平均相对误差为。 1.7％。