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对煤油和空气的混合流体在水平管 ( 19mm× 2 .5mm)内加热时的两相流动进行了实验研究 .实验范围 :空气质量分数为 3%～ 50 % ;混合流体的质量流量为 12 7～ 10 0 0kg/h ;入口压力为0 .135～ 0 .35MPa .采用分相模型对高含气率时的环状流动进行理论分析 ,得到了在高含气率的水平管内 ,煤油不产生相变时两相流动传热和阻力计算的半经验、半理论的准则方程 ,所得到的结果为加氢换热器的设计提供了可靠的依据 .
Experimental study on the two-phase flow of a mixed fluid of kerosene and air heated in a horizontal tube (19 mm × 2.5 mm) was performed in the range of 3% ~ 50%, and the mass flow of the mixed fluid was 12 7 ~ 10 0 0kg / h; inlet pressure is 0 .135 ~ 0 .35MPa. Using the phase-separation model to theoretically analyze the annular flow with high gas-bearing rate, Semi-empirical and semi-theoretical criteria equations for the heat transfer and resistance calculation of two-phase flow during phase transition are provided. The results obtained provide a reliable basis for the design of hydrogenation heat exchanger.