Application of the Three-Omega Method to Measurement of Thermal Conductivity and Thermal Diffusivity of Hydrogen Gas |
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Authors: | E Yusibani P L Woodfield M Fujii K Shinzato X Zhang Y Takata |
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Affiliation: | (1) Department of Mechanical Engineering, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan;(2) Research Center for Hydrogen Industrial Use and Strorage, National Institute of Advanced Industrial Science and Technology (AIST), Nishi-ku, Fukuoka 819-0395, Japan;(3) Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, China |
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Abstract: | Preliminary investigations have been conducted to discuss the possibility of measuring the thermal conductivity of hydrogen
gas by the three-omega method. A one-dimensional analytical solution for the 3ω component is derived which includes the effect of the wire heat capacity. It is shown that it is very important to take into
account the wire heat capacity in the calculation to measure the thermal conductivity of gas by the three-omega method. In
contrast, the wire heat capacity is less important for the thermal conductivity of the liquid or solid phase. The importance
of the wire heat capacity is found to increase with increasing frequency and decrease if the sample thermal conductivity is
high. In order to measure the thermal conductivity of hydrogen gas at atmospheric pressure, a wire of diameter less than 1μm
is necessary if the properties of the wire are to be neglected. |
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Keywords: | Gas Hydrogen Thermal conductivity Three-omega method |
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