대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제28권5호
  • /
  • Pages.510-517
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  • 2004
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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다수의 분할된 긴 열선과 짧은 열선을 갖는 새로운 비정상열선법 센서개발

Development of a New Sensor with Divided Multiple Long and Short Wires in Transient Hot-wire Technique

  • 이신표 (경기대학교 기계공학과) ;
  • 이명훈 (경기대학교 대학원 기계공학과)
  • 발행 : 2004.05.01
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초록

A fine hot-wire is used both as a heating element and a temperature sensor in transient hot-wire method. The traditional sensor system is unnecessarily big so that it takes large fluid volume to measure the thermal conductivity. To dramatically reduce this fluid volume, a new sensor fabrication and a data processing method are proposed in this article. Contrast to the conventional and most popular two wire sensor, the new sensor system is made up of divided multiple long and short wires. Through validation experiments, it is found that the measured thermal conductivities of the glycerin are exactly same each other between the conventional and proposed new method. Also some technical considerations in arranging the multiple wires are briefly discussed.

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참고문헌

  1. Roder, H. M., 1981, 'A Transient Hot-Wire Thermal Conductivity Apparatus for Fluids,' Journal of Research of the National Bureau of Standards, Vol. 86, No. 5, pp. 457-493 https://doi.org/10.6028/jres.086.020
  2. Nagasaka, Y. and Nagashima, A., 1981, 'Absolute Measurement of the Thermal Conductivity of Electrically Conducting Liquids by the Transient Hot-Wire Method,' J. Phys. E. Sci. Instrument, Vol. 14, pp. 1435-1440 https://doi.org/10.1088/0022-3735/14/12/020
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  8. Lee, M. H. and Lee, S. P., 2003, 'Analysis of Temperature Distribution of a Heating Wire Both in Axial and in Radial Direction for the Optimal Sensor Design in Transient Hot-Wire Method,' Institute of Industrial Technology Journal, Vol. 25, pp. 87-98