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| 个人信息 |
|---|
| 学号 | 0228307 |
姓名 | 李含瑛 |
| 学院 | 城市建设与环境工程学院 |
专业 | 供热、供燃气、通风及空调工程 |
| 申请学位 | 硕士 |
指导教师 | 王瑾(高级工程师); |
| 论文信息 |
|---|
| 论文标题 | 冷藏集装箱机械制冷机组热工性能试验台的设计与实验研究 |
| Title | 无信息 |
| 关键词 | 冷藏集装箱 计算流体力学 气流组织 控制 热工性能 |
| Keyword | Thermal container, CFD, Fluid arrangement, Control, Thermal property |
| 完成时间 | 2004年12月 |
中图号 | TU8 |
| 摘要 | 随着冷藏货运量的增加，机械制冷冷藏集装箱得到广泛的应用。机械制冷冷藏集装箱的制冷机组作为整套设备的核心部件，其性能的优劣直接影响到冷藏货运的质量。制冷机组的性能是否达标，要靠专用的测试试验台来检测。
国内在这方面起步比较晚，所建成的试验台和相关的研究资料都比较少。本文提供的设计方法，以及对环境室模拟与实测的结果，希望能给以后的相关研究提供参考。
本文依据冷王（Thermo King）集装箱温度控制（苏州）有限公司制冷机组试验台项目。论述了该项目的研制标准和研制方案。
设计按照ARI标准1110进行，使用校准箱法。分别对环境室和校准箱的结构和设备进行设计，在环境室送回风设计中采用“上送上回”的形式取代以往常用的“水平送风”形式；设计控制系统，通过PID技术实现电加热对控制温度的自动调节。设计数据采集系统，使用数据采集仪通过自主开发的软件实现数据的微机采集和保存。
应用模拟计算来辅助设计。模拟计算采用计算流体力学（CFD）的方法，应用CFD软件FLUENT对环境室的流场和温度场进行了模拟。并用实测数据证明了模拟情况和实际情况的一致性。模拟计算和实测都证明了“上送上回”的形式同样能满足ARI标准的要求。
试验台经过“校准工况”和“性能测试工况”的调试并最终完成后，通过了美国船级社的认证，并已在工厂投入了使用，取得了良好的效果。 |
| Abstract | With the increasing cold storage freight, thermal cargo container has been widely used. The mechanical refrigeration unit is a core part of thermal cargo container, whose characteristic directly affects the quality of freight. We have to rely on the practice of special test-bed to test whether the capability of mechanical refrigeration unit has satisfied the requirement or not.
China has been left behind in this field. There are very limited accomplished test-beds and little access to correlative materials for reference. I hope the designing and the results of numerical simulation and field test for environmental chamber can somewhat make up the absence.
Based on the project of Thermo King(Su Zhou) refrigeration unit capability testing, this article discussed on its standard and the scheme of this project.
The experiment was based on the ARI Standard 1110-Standard for Mechanical Transport Refrigeration Units and applied the Calibrated-Box Method. Great efforts were put into the design of the structure and equipment respectively for the environmental chamber and the Calibrated-Box. Concerning air supplying and returning design of the environmental chamber, this project adopted the type of up supplying and up retuning instead of the usually used type of horizontal supplying. As for the control system, the heater realized the automatic adjustment of the control temperature by PID technology. As for data collection, using data recorder with self-made software realized the data automatic collection and saving.
The design also used the numerical simulation as an assistant method. This method adopted CFD method and its software tool, FLUENT in simulating the flow space and the temperature space of the environmental chamber. And the actual data proved the comparability between the objective model and actual situation. The numerical simulation and the fact testing together indicated that the type of up supplying and up retuning can satisfy the requirement of ARI.
Our test-bed passed through both the Calibrated test condition and the Capacity test condition, and finally achieved the certificate of American Bureau of Shipping. It also has brought out favorable effect after its application in relative factories. |
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