Thermal Diffusivity Of Marble

It has the si derived unit of m s thermal diffusivity is usually denoted α but a h κ k and d are also used.

Thermal diffusivity of marble.

Thermal diffusivity and thermal expansion. Definition of thermal diffusivity. All modes in heat transfer are from high temperature to a lower temperature and require an existence of a temperature difference. 14 i 12.

In heat transfer analysis thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. Conduction convection and radiation. W 1 i0 sioux quartzite o berea sandstone o st. Heat loss or gain can occur in three modes.

39 28 26 24 22 n g. It has the si unit of m s. Clouo qranodiorite v dresser basalt 300 400 500 600 700 800 900 i000 temperature k fig 4. In heat transfer analysis thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure.

These will be discussed later in this chapter. It measures the rate of transfer of heat of a material from the hot side to the cold side. It is observed that the values of thermal conductivity thermal diffusivity and specific heat for these marble samples are in close agreement with the earlier reported 1 results 2 3 00 w w m k x 1 23 mm2 s and pc 2 66 mj m3 k on black marble. Thermal diffusivity a with the unit mm 2 s is a material specific property for characterizing unsteady heat conduction.

It measures the rate of transfer of heat of a material from the hot end to the cold end.