Question

How is thermal Effusivity measured?

Answer 1

Explanation:

For materials of relatively high effusivity, the slope will be lower, than materials of low effusivity. Mathematically, thermal effusivity equates to the square root of the product of thermal conductivity (W/m•K), Density (kg/m3) and Heat Capacity (J/kg•K).

Answer 2

Answer:

The slope of temperature against a special function of time, is used to calculate the thermal effusivity of the material. ... Mathematically, thermal effusivity equates to the square root of the product of thermal conductivity (W/m•K), Density (kg/m3) and Heat Capacity (J/kg•K).

Explanation: