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How do you measure the thermal conductivity of graphite sheets 2011-04-18
The thermal conductivity is a property that indicates how quickly a substance is the heat. Graphite Sheets are used as seals, and knowing its thermal conductivity can tell how much heat can be lost at any given time. The heat is transferred through a Graphite Sheet leaf surface and the temperature difference on both sides of the sheet, and a variable called thermal conductivity. The higher the ratio, the heat moves through the sheet.
Difficulty:
Instructions
Measure length, width and depth of the graphite sheet with a standard. Use meters from a simple calculation.
Measure the temperature of both sides of the graphite sheet with a thermometer. Use degrees Celsius, and 273 to add steps to convert to the Kelvin scale.
Determine the thermal conductivity of graphite. A table of these coefficients can be in a textbook are materials, graphite and the coefficient of 27.06 watts per meter Kelvin.
Multiply the thermal conductivity through the surface of the graphite sheet, and multiplied by the temperature difference on both sides of the sheet. This value for the thickness of the sheet in the heat to maintain the unity of time. For example, a sheet of 0.1 cm thick and 1 square meter of the temperature difference of 50 degrees Kelvin, thermal conductivity (27.06) (50) (1) / (0.001) = 1,353 billion watts per meter Kelvin would .