How to Measure the Thermal Conductivity of Graphite Sheets
- 1). Measure the length, width and depth of the graphite sheet with a meter stick. Use meters for ease of calculation.
- 2). Measure the temperature on both sides of the graphite sheet with a thermometer. Use degrees Celsius, and add 273 to the measurements to convert them to the Kelvin scale.
- 3). Determine the thermal conductivity coefficient of graphite. A table of these coefficients can be found in a materials textbook, and the coefficient for graphite is 27.06 Watts per meter-Kelvin.
- 4). Multiply the thermal conductivity coefficient by the area of the graphite sheet, and multiply by the difference in temperature on either side of the sheet. Divide this value by the thickness of the sheet to get the heat conduction per unit of time. For example, a sheet 0.1 cm thick and 1 square meter that has a temperature difference of 50-degrees Kelvin would have a heat conduction of (27.06)(50)(1)/(0.001) = 1,353,000 Watts per meter-Kelvin.
Source...