Thermal Diffusivity Of Marble

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

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

Thermal diffusivity a with the unit mm 2 s is a material specific property for characterizing unsteady heat conduction. In heat transfer analysis thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. All modes in heat transfer are from high temperature to a lower temperature and require an existence of a temperature difference. 39 28 26 24 22 n g.

These will be discussed later in this chapter. It measures the rate of transfer of heat of a material from the hot end to the cold end. Thermal diffusivity and thermal expansion. Thermal diffusivity is usually denoted α but a κ k and d are also used.

14 i 12. 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. 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.

This value describes how quickly a material reacts to a change in temperature.