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Transfer Calibration Validation Tests on a Heat Flux Sensor in the 51 mm High-Temperature Blackbody

机译:在51 mm高温黑体中的热通量传感器上进行传递校准验证测试

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摘要

Facilities and techniques to characterize heat flux sensors are under development at the National Institute of Standards and Technology. As a part of this effort, a large aperture high-temperature blackbody was commissioned recently. The graphite tube blackbody, heated electrically, has a cavity diameter of 51 mm and can operate up to a maximum temperature of 2773 K. A closed-loop cooling system using a water-to-water heat exchanger cools electrodes and the outer reflecting shield. This paper describes the newly developed blackbody facility and the validation tests conducted using a reference standard Schmidt-Boelter heat flux sensor. The transfer calibration results obtained on the Schmidt-Boelter sensor agreed with the previous data within the experimental uncertainty limits.
机译:美国国家标准技术研究所正在开发表征热通量传感器的设备和技术。作为这项工作的一部分,最近调试了大口径高温黑体。电加热的石墨管黑体的腔直径为51 mm,最高可运行温度为2773K。使用水对水热交换器的闭环冷却系统可冷却电极和外部反射罩。本文介绍了新开发的黑体设备以及使用参考标准Schmidt-Boelter热通量传感器进行的验证测试。在Schmidt-Boelter传感器上获得的转移校准结果与实验不确定度范围内的先前数据相符。

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