| 高稳定性大型空气温度校准试验箱的研究 |
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| 引用本文： | 徐含青,徐华太.高稳定性大型空气温度校准试验箱的研究[J].计测技术,2018,38(6). |
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| 作者姓名： | 徐含青 徐华太 |
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| 作者单位： | 苏州市计量测试院，江苏 苏州215128 |
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| 摘 要： | 为满足温度采集仪的校准需求,研制了高稳定性大型空气温度校准试验箱。阐述了该试验箱的箱体结构、工作原理。以箱体内传热过程的理论模型为基础,结合Fluent软件进行了数值模拟,分析了试验箱体内温度场以及空气流速场的分布及变化。通过试验证明该试验箱控温精度高、温度波动度小、温场均匀性好,可推广应用。
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| 关 键 词： | 关键词：试验箱 校准 温度波动度 温度均匀度 控制方程 数值模拟。 |
Investigation on the Large-scale Calibration Test Box with High Stability for Air Temperature |
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| Abstract: | In order to meet the calibration requirements of the temperature acquisition instrument, a high stability large air temperature calibration test chamber was developed. The box structure and working principle of the test box are expounded. Based on the theoretical model of heat transfer process in the chamber, numerical simulation was carried out with Fluent software. The distribution and variation of temperature field and air velocity field in the chamber were analyzed. The test proves that the test box has high temperature control precision, small temperature fluctuation and good uniformity of temperature field, and can be popularized and applied. |
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| Keywords: | test box calibration temperature fluctuation temperature equality degree governing equation numerical simulation |
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