Thermal resistance of the contact connection of birch wood and the heating element
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Keywords

Contact thermal resistance
birch wood
conductive heating

How to Cite

Popov, V., & Dornyak, O. (2022). Thermal resistance of the contact connection of birch wood and the heating element. Industrial Processes and Technologies, 2(3(5), 88–94. https://doi.org/10.37816/2713-0789-2022-2-3(5)-88-94

Abstract

The results of an experimental study of the thermal and mechanical contact of the elements of a compound made of dissimilar materials - freshly cut hardwood (birch) and a plate made of alloy D16T are presented. The experiment was carried out on a special installation that allows using thermocouples to obtain a temperature profile in contact pairs in a steady-state heat transfer process. The contact pair is subjected to compressive forces, while the pressure range at the outer boundary of the contact pair is from 0.1 to 1.5 MPa. The results of the study revealed a tendency to decrease with increasing pressure in the contact zone of the magnitude of the temperature jump. At the same time, the value of the heat flux density increases. Experimental data are approximated by analytical dependencies. It is shown that increasing the pressure on the wood sample to 1.5 MPa leads to a decrease in the thermal resistance of the contact by more than 2 times. The experimental data can be used in engineering calculations of the operating parameters of the process of conductive drying and heating of birch lumber.

https://doi.org/10.37816/2713-0789-2022-2-3(5)-88-94
pdf (Русский)
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