Thermal Conductivity Of Marble

In the summer you feel cold when you touch marble.

Thermal conductivity of marble.

It depends on several factors. 0 9 to 1 2 x 10 5. The ability of the material at which the heat is transferred is called thermal conductivity. Cement concrete quartzite.

Higher the thermal conductivity of the material more will be the heat transferred. The thermal conductivity of the marble is more than the surface of the ground. Cement concrete sand stone. 1 2 to 1 3 x 10 5.

Generic limestone r is relatively pure polycrystaline calcite solidity is the quotient of the solid grain volume divided by the bulk volume and k is thermal conductivity in w m 1 k 1. The presence of water increases the thermal conductivity i e enhances the flow of heat 3 pressure a high pressure increases the thermal conductivity by closing cracks which inhibit heat flow 4 temperature and 5 isotropy and homogeneity of the rock. The thermal conductivity normally found in tables is the value valid for normal room temperature. This value will not differ much between 273 and 343 k 0 70 c.

The si unit of thermal conductivity is w mk. There are certain applications where this heat transfer or thermal conductivity of a natural stone becomes an important factor in selecting the best material and design. A stone surround at a fireplace or cooktop between the heat source and a flammable outer material is an example where the conductivity of the stone should be carefully. Thermal conductivity is a material property that describes ability to conduct heat thermal conductivity can be defined as the quantity of heat transmitted through a unit thickness of a material in a direction normal to a surface of unit area due to a unit temperature gradient under steady state conditions.

Conductivity of the particulates reinforced sustainable composites was as low as 0 23 w m1k1at a 200c molding temperature with 20 and 40 filler concentrations and the maximum thermal conductivity was 0 48 w m1k1at a 160c molding temperature with 80 filler concentration. The thermal conductivity of a substance as defined as a heat flow per unit area per unit time when the temperature decreases by one degree in unit distance. The marble dust 8 16 and 24 wt is initially mixed in the matrix material using magnetic stirrer thereafter the mixture is sonicated for 02 h. Thermal properties of tile and marble noor zanizawati zainol.

1 chemical composition of the rock i e mineral content 2 fluid content type and degree of saturation of the pore space. The filler material marble dust md average particle size 10 μm thermal conductivity 2 07 w m k collected from local marble cutting industries of rajasthan india.