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在实验观测到的水平管管内凝结分层流基础上，建立了水平管管内凝结分层流的稳态两相流数学模型；计算出了两相流区内一些重要参数空隙率、干度、汽相速度、液相速度和凝结换热系数沿冷凝管长的变化曲线；分析计算了在冷凝器中加入汽液分离器对提高冷凝器冷凝性能的作用和效果．相的剪切力也随之增加，并超过了壁面摩擦阻力的增加，所以平均速度会先升高，随着汽相速度的迅速下降，这两种力的变化很快达到转折处，然后液相速度就渐渐降下来．图６汽相速度随管长变化Ｆｉｇ．６Ｖａｐｏｒｐｈａｓｅｖｅｌｏｃｉｔｙｖａｒｉｅｔｉｅｓａｌｏｎｇｗｉｔｈｐｉｐｅｌｅｎｇｔｈ图７液相速度随管长变化Ｆｉｇ．７Ｌｉｑｕｉｄｐｈａｓｅｖｅｌｏｃｉｔｙｖａｒｉｅｔｉｅｓａｌｏｎｇｗｉｔｈｐｉｐｅｌｅｎｇｔｈ４汽液分离器对冷凝效果的影响要想提高冷凝器的冷凝效果，如何把冷凝液及时排出是很关键的．因为冷凝液的热阻相对来讲非常大，由图４也可以看出，在冷凝管入口处，冷凝液每增加一点，都会使凝结换热系数降低很多．汽液分离器能够把液体从管内及时引出，使得热阻降低，凝结换热系数大幅度提高，从而达到提高冷凝器换热性能的目的．在计算中，汽液分离器的位置取在冷凝管五分之一管长处．由图８?
Based on the experimentally observed stratified stratified flow in horizontal tube, a steady-state two-phase flow mathematical model of stratified stratified flow in horizontal tube was established. Some important parameters such as porosity, dryness, Vapor phase velocity, liquid phase velocity and condensation heat transfer coefficient along the length of the condenser tube were calculated. The effect and effect of adding the vapor-liquid separator to the condenser to improve the condensation performance of the condenser were analyzed and calculated. The shear force of the phase also increases and exceeds the increase of the frictional resistance of the wall, so the average velocity will increase first, and as the vapor phase velocity decreases rapidly, the changes of these two forces reach the turning point quickly, and then the liquid phase Slow down the speed. Figure 6 vapor phase velocity changes with the tube length. 6Vaporphasevelocityvarietiesalongwithpipelength Figure 7 liquid velocity with tube length changes Fig. 7Liquidphasevelocityvarietiesalongwithpipelength4 vapor-liquid separator on the condensing effect To improve the condensing effect of the condenser, how to discharge the condensate in time is crucial. Because the thermal resistance of the condensate is relatively large, it can also be seen from Fig. 4 that for each additional point of the condensate inlet, the condensation heat transfer coefficient will be greatly reduced. The vapor-liquid separator can lead the liquid out of the tube in time, so that the thermal resistance is reduced and the condensation heat transfer coefficient is greatly increased, thereby achieving the purpose of improving the heat exchange performance of the condenser. In the calculation, the vapor-liquid separator is taken at a quarter of the length of the condenser tube. From Figure 8?