Thermal properties of an object
Heat capacity(c)
A measure of the ability of a material to absorbe heat
energy. It is quantity of heat required toraise the temperature of one grem of material by 1° c.
Thermal storage(C)
The
capability of storing heat C=c.p, p is the density and c=heat.
Thermal conductivity(k)
A measure of the rate that a
substance transfers heat through it . It is the number of calories that will
pass through 1 cm³ of a material in 1
sec when the two opposite faces are maintained with a 1°c temperature difference.
a measure of the ability of a material to transfert heat.
Given two surfaces on either side of the material with a temperature
difference between them, the thermal conductivity is the heat energy
transferred per unit time and per unit surface area , divided by the temperature
difference. It is measured in watts per degree kelvin.
Thermal diffusivity(K)
Material ability to transfer heat
from the surface to interior during heating and vice versa.
Thermal inertia(p)
A measure of the resistance of a
material to change its temperature in response to a change in the temperature
of its surroundings .thermal inertia is computed using the equation:
p=(k*p*c)1/2
where-
k is thermal
conductivity
c is thermal
capacity
p is density (g
cm-³)
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