Amount of heat required to change the temperature of one unit of volume by one unit of temperature:
c_v = \frac{\delta Q}{\delta V \cdot \delta T} |
| Symbol | Dimension | SI units | Oil metric units | Oil field units |
|---|---|---|---|---|
| M L-1 T−2 Θ−1 | J/(m3⋅K) | J/(m3⋅K) |
Volumetric Heat Capacity depends on the way the heat is transferred and as such is not a material property.
The two major heat transfer processes are isobaric and isohoric which define:
| Isobaric volumetric heat capacity | Isochoric volumetric heat capacity |
|---|---|
Both and
are material properties and properly tabulated for the vast majority of materials.
Volumetric Heat Capacity relates to Specific Heat Capacity
and density of the matter
as:
c_v = \frac{c_m}{\rho} |
In many technical papers the "m" or "v" index is omitted which leads to confusion between Specific Heat Capacity and Volumetric Heat Capacity
.
The other confusion is made between Volumetric Heat Capacity and Isochoric Heat Capacity
.
For multiphase fluid in thermodynamic equilibrium the Volumetric Heat Capacity is:
c_v = \sum_\alpha s_\alpha c_{v \alpha} |
where
| |
Physics / Thermodynamics / Thermodynamic process / Heat Transfer / Heat Capacity
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