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本文研究了蒸气和不凝性气体混合物在水平平板上的紊流强制对流膜状凝结过程,阐明了不凝性气体对凝结换热量的影响。理论分析首先是针对广泛的工质而进行的,然后应用于水蒸汽—空气物系。在常用的参数范围内,反映了不凝性气体的存在对凝结换热量的影响,指出了不凝性气体对紊流凝结换热的影响要比其对层流凝结换热的影响小,并且只有在低压时不凝性气体的影响才变得显著。
In this paper, turbulent forced convection film-like coagulation of steam and non-condensable gas mixtures on horizontal plates is studied, and the influence of non-condensable gases on the heat transfer of coagulation is illustrated. The theoretical analysis is carried out first for a wide range of working fluids and then for water vapor-air systems. The influence of the non-condensable gases on the condensation heat transfer is reflected in the commonly used parameters. It is pointed out that the influence of the non-condensable gases on the heat transfer of turbulent condensation is smaller than that on the condensation heat transfer of laminar flow, And the effect of non-condensable gases becomes significant only at low pressures.