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1 弓I言 近年来国内外对管壳式壳侧两相流动的研究正在逐步开展’‘-‘’,但现有的研究均以具有单程壳体的TEMA-E型换热器为对象,尚末对石油化工中使用的TEMA-F型换热器（具有1个纵向折流板,把壳体分为2个壳室）进行研究.本文在较宽广的实验参数范围内,对空气-柴油两相混合物在TEMA-F型理想换热器模型中的流动特性进行了较系统的实验研究.2 实验装置、测试系统及实验方法 在空气-油两相流动特性试验台上进行实验,实验系统见图1.试验用理想换热器模型示于图2,模型中换热管与横向折流板、横向折流板与壳体之间无间隙,为防止边壁的旁通泄漏,还安装了非整圆假管.当纵向折流板垂直放置时,换热器左右对称,故图2中试验元件只给出整个换热器的一半（见图中实线部分）,试验元件用有机玻璃制造.在前、后端面上观察流型.平均截面含气率用快速关闭阀门法测量. “PAsTg 123 4 图1 实验系统 图2 换热器模型立体图 Fig.IExperlmental flow loop Fig.2 Heatexchanger model 1一空气压缩机;2一空气稳压器;3一空气冷却器;l一壳;2一纵向折流板;3一横向折流板;4一换热管 4一油箱;5一气液分离器;6一油流量计;7一试验 段;8一空气流量计;9一油稳压计J一油泵3 实验结果及讨论3.l 两相流型及其转变3.1.1 流型划分 在本文实验?
In recent years, the research on shell-and-tube two-phase flow in the world has been progressively carried out. However, the existing researches all take the TEMA-E heat exchanger with one-way shell as the object, The TEMA-F heat exchanger used in the petrochemical industry (with one longitudinal baffle and the shell divided into two shell chambers) was not studied yet.In this paper, the air- Diesel two-phase mixture in TEMA-F ideal heat exchanger model of the flow characteristics of a more systematic experimental study.2 Experimental equipment, test systems and experimental methods in the air-oil two-phase flow characteristics of the test bench experiments, experiments The system is shown in Figure 1. The ideal heat exchanger model for the test is shown in Figure 2, with heat exchange tubes and lateral baffles in the model, no gaps between the lateral baffles and the housing, and to prevent by-pass leakage from the side walls When the vertical baffle is placed vertically, the heat exchanger is symmetrical, so the test element in Figure 2 only gives half of the whole heat exchanger (see the solid line in the figure), and the test element Plexiglass .Flow profiles were observed on the front and rear faces. The average cross-section gas content was measured with a quick shut-off valve France measurement. "PAsTg 123 4 Figure 1 Experimental system Figure 2 Schematic diagram of the heat exchanger model Fig. IExperlmental flow loop Fig.2 Heatexchanger model 1 an air compressor; 2 an air regulator; 3 an air cooler; ; 2 a vertical baffle; 3 a lateral baffle; 4 a heat exchanger tube 4 a tank; 5 a gas-liquid separator; 6 an oil flow meter; 7 a test section; 8 an air flow meter; Stabilizer J a pump 3 experimental results and discussion 3.l two-phase flow and its transformation 3.1.1 flow pattern in this experiment?