| 摘要: |
| 为了满足采用同一仿真工具对制冷系统中常用的不同类型的换热器进行仿真，建立了一种通用的制冷剂-空气换热器三维分布参数模型，并据此开发了具有3D交互式图形界面的换热器集成式数字化仿真设计软件HXSIM。HXSIM采用统一的仿真框架对换热器进行模拟，并将翅片管、微通道管翅、丝管和板管划分为四类控制单元。且每个单元均包括制冷剂，空气和管翅（板）三个对象。并根据三个对象的结构特点和传热特性建立了相应的控制方程。为了便于用户使用，在HXSIM中采用OpenGL技术开发了界面友好的3D交互式图形界面。HXSIM对不同类型的换热器都有较高的仿真精度，实验验证表明其换热量的最大预测误差小于10%，空气侧压降的最大预测误差小于1.16 Pa。 |
| 关键词: 热工学 换热器 数字化设计 模型 |
| DOI： |
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| 基金项目: |
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| An Integrated Numerical Design Tool for Air-to-refrigerant Heat Exchangers |
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Ren Tao, Ding Guoliang, Wang Tingting
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| (Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University) |
| Abstract: |
| In order to meet the requirement of simulating different types of heat exchangers which are widely used in refrigerating system by a simulation tool, a general 3D distributed-parameter numerical design tool, HXSIM, is introduced. A general simulation framework was adopted to establish a general purpose solver. With the help of control volume method, all types of heat exchangers can be divided into four types, which are fin-tube control volume, microchannel-fin control volume, wire-tube control volume and plate-tube control volume. There exists three objects in each control volume, which are refrigerant, air and tube fin (tube wire or tube plate), and the governing equations for each object are established according to its heat transfer and pressure drop characteristic. OpenGL was applied in building an interactive graphic user-friendly interface, and in developing HXSIM to facilitate a modular, highly flexible and customized simulation tool. The model prediction with HXSIM were verified against experimental data, which shows the maximum deviation for heat exchange capacity is within 10% and the maximum deviation for air side pressure drop is within 1.16 Pa. |
| Key words: Pyrology Heat exchanger Numerical design Model |
