TY - JOUR
N2 - The paper proposes an automated system for measuring the thermal conductivity of solids in the range from 5 to 400 W/(m·K) with increased accuracy and reduced duration of thermal conductivity measurement. The main element of this system is a thermal conductivity measuring transducer built on a bridge diagram balanced by heat flows. Using the theory of thermal circuits, the authors built a mathematical model of the measuring transducer. To implement the automated system for measuring thermal conductivity, materials of heat-conducting elements, reference specimens, and comparative elements were selected, and their design parameters were calculated. The setting parameters of the control system for balancing the bridge measuring diagram were determined. The authors also carried out the calibration of the developed thermal conductivity measuring system using reference specimens and obtained its calibration characteristic with a correlation coefficient R-square of 0.9987.
L1 - http://journals.pan.pl/Content/131359/12_1k.pdf
L2 - http://journals.pan.pl/Content/131359
PY - 2024
IS - No 1
EP - 193
DO - 10.24425/mms.2024.148538
KW - measuring transducer
KW - thermal conductivity
KW - thermal measuring diagram
KW - Heat flux
KW - thermal resistance
A1 - Pistun, Yevhen
A1 - Vasylkivskyi, Ihor
A1 - Fedynets, Vasyl
A1 - Krykh, Hanna
A1 - Matiko, Halyna
PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation
VL - vol. 31
DA - 14.05.2024
T1 - Automated system for measuring thermal conductivity of solid materials
SP - 179
UR - http://journals.pan.pl/dlibra/publication/edition/131359
T2 - Metrology and Measurement Systems
ER -