气控钠热管炉热特性实验研究

基金项目:

中国计量科学研究院基本科研项目(AKY0838).

详细信息

Thermal Characteristics of Gas-controlled Sodium Heat-pipe Furnace

1. College of Environment & Energy Engineering, Beijing University of Technology, Beijing 100124, China;
2. National Institute of Metrology, Beijing 100013, China;
3. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
4. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

摘要: 为探索气控热管在计量领域的应用,研究气控钠热管炉热特性.在未控压的状态下,找出加热炉最佳控温点,研究气控钠热管在同一温度计阱不同位置上和不同温度计阱中的温度稳定性和温度场均匀性,对加热炉丝2种不同的绕制方式进行讨论.实验结果表明,将热管内温度控制在655℃、气路压力控制在7.840 kPa的状态下,热管温度稳定性在15 min内达到±0.836 4 mK.
- 气控钠热管 /
- 温度放大器 /
- 计量 /
- 炉温控制 /
- 温度稳定性
Abstract: To explore the application of the gas-controlled heat-pipe in metrology,the thermal characteristics of the gas-controlled sodium heat-pipe furnace is researched.The best temperature control position of the furnace is found without pressure control,the temperature stability and uniformity both in the single thermometer well and among different thermometer wells are studied,and two different winding modes of heating wires are discussed.Experimental results show that the temperature stability reaches ±0.836 4 mK within 15 min,controlling heat-pipe inner temperature at 655 ℃,and the gas line pressure at 7.840 kPa.
- gas-controlled sodium heat-pipe /
- temperature amplifier /
- metrology /
- furnace temperature control /
- temperature stability

[1]	MERLONE A,MARCRINO P.The“TemperatureAmplifier”for very accurate temperature measurementsbetween Al and Ag fixed points[C]∥Proceedings ofTEMPMEKO2004 9th International Symposium onTemperature and Thermal Measurements in Industry andScience.Zagerb,Croatia:FSB/LPM,2005:227-232.
[2]	MARCRINO P,MERLONE A.Towards new temperaturestandards for contact thermometry above 660℃[J].Metrologia,2002,39:395-398.
[3]	MERLONE A.The euromet project 772 on the temperatureamplifier,from its proposal to the present status[J].International Journal of Thermophysics,2008,29:1858-1866.
[4]	MERLONE A,ZHANG Jin-tao,YAN Xiao-ke,et al.INRIM and NIM cooperation on the temperature amplifier[J].International Journal of Thermophysics,2008,29:1867-1875.
[5]	CHIS W.Heat pipe theory and practice[M].WashingtonDC:Hemisphere Publishing Corporation,1976:140-148.
[6]	MERLONE A.Gas-controlled heat-pipes for platinumresistance thermometry[M].Torino:Politecnico diTorino,2002:7-9.
[7]	MARCRINO P,MERLONE A.Thermodynamic tempera-ture amplification by means of two coupled gas-controlledheat-pipes[C]∥Temperature:its Measurement andControl in Science and Industry.Chicago,USA:AmericanInstitute of Physics,2003:951-956.
[8]	HILL K D,GOTOH M.The vapor of sodium between 660℃and 960℃[J].Metrologia,1996,33:49-60.