Heat Capacity

on . Posted in Thermodynamics

open system 1Tags: Thermal Conductivity Heat Heat Capacity

Heat capacity, abbreviated as C or \(c_p\), is the amount of enerigy required to increase the temperature of a substance by 1°C.  The heat gain or loss results in a change in temperature and the state and performance of work.  The heat capacity of a substance is an important property in thermodynamics as it helps to determine the amount of energy needed to heat or cool a substance or system.  It also influences the rate at which a substance changes temperature in response to thermal energy transfer.

Different substances and systems have different heat capacities due to variations in their molecular structure and composition.  The heat capacity of a substance may also vary with temperature, particularly for materials that undergo phase transitions or exhibit other complex thermal behavior.


Heat capacity formula

\(\large{ C = \frac{ \Delta Q }{ \Delta T }   }\)     (Heat Capacity)

\(\large{ \Delta Q = C \; \Delta T  }\)

\(\large{ \Delta T = \frac{\Delta Q}{ C }  }\)

Symbol English Metric
\(\large{ C }\) = heat capacity \(\large{\frac{Btu}{F}}\) \(\large{\frac{kJ}{K}}\)
\(\large{ \Delta Q }\) = heat transfered amount \(\large{\frac{Btu}{hr}}\) \(\large{ W }\)
\(\large{ \Delta T }\) = temperature differential \(\large{ F }\) \(\large{ K }\)


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Tags: Thermal Conductivity Heat Heat Capacity