Heat capacity

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heat capacity

(
Also called thermal capacity.) The ratio of the energy or enthalpy absorbed (or released) by a system to the corresponding temperature rise (or fall).

Heat capacities are defined for particular processes. For a constant volume process,
ams2001glos-He3
where U is the internal energy of a system and T is its temperature. For a constant pressure process,
ams2001glos-He4
where H is the system enthalpy. The heating rate, Q, for a constant volume process is
ams2001glos-He5
whereas in a constant pressure process,
ams2001glos-He6

See specific heat capacity.