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vol 63 / August, 2020
Article

DOI 10.17586/0021-3454-2016-59-9-767-772

UDC 536.6

THE UNCERTAINTY OF MEASURING UNSTEADY SURFACE TEMPERATURE OF MASSIVE BODIES

N. V. Pilipenko
ITMO University, Saint Petersburg, 197101, Russian Federation; Associate professor; Professor


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Abstract. Methodical uncertainties in measurements of unsteady surface temperature of massive bodies using various contact temperature converters are analyzed. Two approaches to the problem of actual temperature retrieving are considered: 1) based on Laplace transform application, leading to operational method of integration of arising differential equations, and 2) an approach using difference-differential models of heat transfer in the system of a thermocouple — object of the study that leads to a numericalanalytical calculation method.
Keywords: temperature, heat flux, measuring converter of temperature, indeterminacy of measurement, differential-difference models

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