| 摘要: |
| 在Navier-Stokes方程的基础上，提出一种新的氨水降膜吸收传热模型，通过对降膜过程中的液膜流动特性进行了一维变换，采用Grank-Nicholson方法对降膜特性进行求解，然后根据实验验证了理论模型的仿真结果，实验数据和仿真数据的误差在17%以内，并根据实验数据拟合出了传热系数公式，确定了不同管径下液膜的最大体积流量。
关键词 降膜吸收；传热模型；水平光管；数值解 |
| 关键词: 降膜吸收 传热模型 水平光管 数值解 |
| DOI： |
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| 基金项目:国家科技计划项目（2009GJG00015）资助。 |
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| A Heat Transfer Model of Ammonia Horizontal Falling-film Absorption |
| Zhang Qiang,Yang Yongping |
| (Mechanical Engineering College, Shaanxi University of Technology) |
| Abstract: |
| A new heat and mass transfer model was presented on the basis of Navier-Stokes equation. One-dimensional transformation was conducted on the function of liquid film flow in the process of falling-film, and the Grank-Nicholson Method was used to solve falling-film characteristics. The simulation result of theoretical model was validated with the experiment, and its error is within 17%. Heat and mass transfer coefficient formula was fitted based on the experimental data, and the biggest flow volume of liquid film was obtained in different diameters. |
| Key words: falling-film absorption heat and mass transfer horizontal bare tube numerical simulation |
