Amount of heat required to change the temperature of one unit of amount of matter under a constant pressure by one unit of temperature:
(1) | c_P = \frac{C_P}{\nu}= \frac{1}{\nu} \cdot \left( \frac{\delta Q}{\delta T} \right)_p |
Symbol | Dimension | SI units | Oil metric units | Oil field units |
---|---|---|---|---|
c_P | M L2 T−2 Θ−1 | J/(mol⋅K) | J/(mol⋅K) |
It is a material property and properly tabulated for the vast majority of materials.
The Isobaric molar heat capacity is related to Isobaric specific heat capacity c_{Pm} and Volumetric Heat Capacity c_{Pv} as:
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|
where
M | molar mass of the substance | V_m | molar volume of the substance |
The Isobaric molar heat capacity of the mixture in thermodynamic equilibrium follows the simple mixing rule:
(4) | c_P = \sum_i \, x_i \, c_{P \, i} |
where
x_i | mole fraction of the i-th mixture component, subjected to \sum_i x_i= 1 |
c_{P\, i} | molar heat capacity of the i-th mixture component |
See also
Physics / Thermodynamics / Thermodynamic process / Heat Transfer / Heat Capacity / Molar Heat Capacity
[ Isochoric molar heat capacity (cV) ]
[ Basic Petroleum Rock and Fluid Properties Handbook ]