Measurement of thermophysical properties at low temperatures by rectangular-shaped pulse heating

Takehiro Ito, Yasuyuki Takata, Hiromi Kubota, Tetsuji Honnami

研究成果: ジャーナルへの寄稿記事

抄録

A transient method with pulse heating has been developed to determine the specific heat and thermal conductivity of Bakelite (phenol-formaldehyde resin) in the temperature range of 4.44-9.15K. The temperature excursion in an infinite cylinder with an insulated outer surface and with a cylindrical heat source embedded in it was calculated initially. In the calculation, the heat source released heat as a rectangular-shaped pulse in the time direction. The ratio of the temperature rise at any two time instances was found to be a function only of the Fourier numbers associated to those instances. Therefore, by measuring that ratio, thermal diffusivity was determined while the specific heat could be calculated by the ultimate temperature rise. It was recognized in the temperature range tested that the specific heat and thermal conductivity increased with temperature while the thermal diffusivity decreased with it. The temperature dependence of the specific heat measured is similar to that for Formite Bakelite varnish in the literature.

元の言語英語
ページ(範囲)2556-2559
ページ数4
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
54
発行部数505
DOI
出版物ステータス出版済み - 1 1 1988

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pulse heating
thermophysical properties
Thermodynamic properties
Heating
Specific heat
Bakelite (trademark)
specific heat
Thermal conductivity
thermal diffusivity
heat sources
Thermal diffusivity
Temperature
temperature
thermal conductivity
phenol formaldehyde
varnishes
conductivity
Varnish
resins
Formaldehyde

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

これを引用

Measurement of thermophysical properties at low temperatures by rectangular-shaped pulse heating. / Ito, Takehiro; Takata, Yasuyuki; Kubota, Hiromi; Honnami, Tetsuji.

:: Transactions of the Japan Society of Mechanical Engineers Series B, 巻 54, 番号 505, 01.01.1988, p. 2556-2559.

研究成果: ジャーナルへの寄稿記事

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