Development and Calibration of Heat Transfer Coefficient Sensor for Rotational State

摘要：

This paper describes the design, manufacture, and calibration of heat transfer coefficient sensor. The intended application of this instrument is on a high rotational speed test disc. In the experiments, the heat transfer coefficient sensor is calibrated under static state and rotational state respectively. The calibration under the static state is accomplished in a pipe: the inside diameter (ID) is 0.048 m and the total length is 4 m, the distance between the sensor and the inlet of the pipe is 3.5 m; the standard value is measured using a self-made calibrator. The calibration under the rotational state is accomplished using a rotating disc: the diameter and thickness of the stainless disc are 800 mm and 25 mm, respectively; the sensor is installed at the location of r=250mm; the rotating disc driven by a 30 kW direct current motor can supply the maximum rotational speed of 3000 rpm. The standard value under rotational state is provided by an approximate empirical formula. The results show that the designed sensor can measure heat transfer coefficient directly under rotational state and static state with good accuracy and stability; the correlation factor of k are constant under static state and rotational state.

关键词： rotational state steady method heat transfer coefficient sensor

作者: QUAN Yongkai XU Guoqiang LUO Xiang ZHANG Da

作者单位: School of Jet Propulsion BUAA Beijing, China

会议类型: 国际会议

会议名称: The 3rd International Symposium on Jet Propulsion and Power Engineering(第三届喷气推进与动力工程国际会议 ISJPPE)

会议地点: 南京

会议语种:英文

页码: 343-347

在线出版日期: 2010-09-13（万方平台首次上网日期，不代表论文的发表时间）