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以核化理论为基础 ,在考虑沸腾表面微结构分布的影响下 ,确定了流动沸腾换热关系式中Chen模型抑制因子的表达式。并以R134a和R2 2为实验工质在 14mm内径的水平光滑管内进行了流动沸腾换热实验 ,对获得的实验数据采用Chen模型建立流动沸腾换热关系式 ,抑制因子采用笔者得到的表达式 ,该换热关系式能很好地和实验数据吻合 ,表明笔者确定的抑制因子表达式能有效提高采用Chen模型建立的流动沸腾换热关系式的准确度。
Based on the nucleation theory and under the influence of the distribution of the microstructure of the boiling surface, the expression of the suppression factor of the Chen model in the flow boiling heat transfer relationship was determined. The flow boiling heat transfer experiments were carried out in a horizontal smooth tube with a diameter of 14mm using R134a and R2 2 as experimental materials. The flow boiling heat transfer relationship was established by using the Chen model for the experimental data obtained. The suppression factor was obtained by the author’s expression, The heat transfer equation is well consistent with the experimental data, indicating that the author determines the inhibition factor expression can effectively improve the use of Chen model to establish the flow boiling heat transfer relationship accuracy.