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A computer-controlled transient needle-probe thermal conductivity instrument for liquids

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Abstract

A computerized system utilizing the transient needle-probe technique has been developed for thermal conductivity measurements on solids and liquids. Thermal conductivities are determined to an accuracy of better than 5%. The instrument is unique in that it uses “off the shelf” components such as a personal computer and analog-to-digital conversion devices, together with software developed in our laboratory. The initial expense and time required to begin measurements are less than 20% of those for normal transient hot-wire measurements. Typical results are presented for liquid tertiary butyl alcohol, 1-methylnaphthalene, and glycerin.

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Authors and Affiliations

  1. Chemical Engineering and Petroleum Refining Department, Colorado School of Mines, 80401, Golden, Colorado, USA

    G. B. Asher & E. D. Sloan

  2. SynGas Incorporated, 80401, Golden, Colorado, USA

    M. S. Graboski

Authors
  1. G. B. Asher
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  2. E. D. Sloan
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  3. M. S. Graboski
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Asher, G.B., Sloan, E.D. & Graboski, M.S. A computer-controlled transient needle-probe thermal conductivity instrument for liquids. Int J Thermophys 7, 285–294 (1986). https://doi.org/10.1007/BF00500155

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  • DOI: https://doi.org/10.1007/BF00500155

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