Aldrich Valloyas

Heat conduction experiments

Measuring the thermal conductivity of a brass bar from steady-state temperature profiles along heated, intermediate and cooled sections.

Fourier's law, measured

filed underEnergy & thermal

ProjectHeat conduction experiments
CourseThermofluids lab
Date2025
TeamTeam of 5
My partTeam member
ToolsExcel, lab instrumentation
Drawn byA. Valloyas
ScaleNTS
Sheet16 of 16
Temperature against position along the bar with linear fits for three sections
heatercoolingT1T2T3T4T5T6T7T8T9heatedintermediatecooledxTq = −k · dT/dx
the system at a glance

A brass bar heated at one end and cooled at the other, with thermocouples along its length. At steady state the temperature drops linearly through each section, and the slope plus the known heat flow gives thermal conductivity through Fourier’s law.

We fitted lines to the heated, intermediate and cooled sections at the same heat input and compared the conductivity calculated from each.