Technological and theoretical principles for increasing the accuracy and reliability of the direct measurement of the thermal conductivity of solids are considered. Methods of minimizing the errors in measuring the thermal conductivity by compensating the lateral outflows of thermal energy from a gradient heater and from the side surface of the sample due to heat transfer and radiation are proposed and tested. The optimum procedural and apparatus solutions which minimize the errors of the thermal conductivity of solids, depending on the specific measurement conditions, are determined.
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This research was supported by the Ministry of Education and Science of the Russian Federation as part of the State Assignment No. 2014/376 to Educational Organization of Higher Education (Project No. 59).
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Translated from Izmeritel’naya Tekhnika No. 4 pp. 22–26 April 2014
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Bochegov, V.I., Grabov, V.M. & Parakhin, A.S. Technical Devices for the Direct Measurement of the Thermal Conductivity of Solids. Meas Tech 57, 401–408 (2014). https://doi.org/10.1007/s11018-014-0468-2
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DOI: https://doi.org/10.1007/s11018-014-0468-2