Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 1 (Q.No. 23)
23.
Thermal diffusivity is a
Discussion:
6 comments Page 1 of 1.
Ashutosh kumar said:
1 decade ago
Thermal diffusivity is a physical property because it is the ratio of ability of the medium to conduct heat to the heat absorbing capacity.
Thermal diffusivity, (thermal conductivity/product of density and specific heat at constant pressure).
Thermal diffusivity, (thermal conductivity/product of density and specific heat at constant pressure).
Pranesh said:
1 decade ago
It is a function of temperature, since density is temperature dependent.
It is a physical property of the substance since k, thermal conductivity is a physical property.
It is not a dimensionless parameter.
It is a physical property of the substance since k, thermal conductivity is a physical property.
It is not a dimensionless parameter.
Anil pandey said:
1 decade ago
Yes this is also function of temperature.
Pranay said:
9 years ago
No, it is not at all the function of temperature, density variation in solids with respect to temperature cannot be realized as it can be in liquids and gases.
Diffusivity denotes the ability of a substance to conduct the heat with respect to its ability to store the heat (heat capacity) = k/pc.
Diffusivity denotes the ability of a substance to conduct the heat with respect to its ability to store the heat (heat capacity) = k/pc.
(1)
Omprakash Kumar said:
9 years ago
It is the physical property of material.
Amu said:
8 years ago
Dimensions is m^2/sec.
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