Release:2016, Vol. 2. №1
About the authors:Pavel Yu. Mikhailov, Cand. Sci. (Phys.-Math.), Associate Professor, Department of Multiphase Systems Mechanics, Institute of Physics and Technology, Tyumen State University; email@example.com
The article dwells upon the problem of incorrect operation of the heat meter due to unreliable measurement of the actual temperature of non-isothermal coolant flow caused by scale deposition on the surface of the temperature sensor pocket. The presented design procedure allows to estimate the time required for the reliable determination of the actual flow temperature, accounting for the thickness of calcification and its thermal properties. The described technique is based on the solution of non-stationary heat equation with the help of control volume method accounting for the problem’s radial symmetry. On the most frequent example in the composition of the heat meter resistance thermometers (RTD-5071) the curves of the temperature inertia are constructed, and economic losses for different thicknesses of sulfate scale are evaluated.