Heat Capacity at Constant Pressure

At constant pressure, abbreviated as C_p, some of the heat goes to doing work.  The value of heat capacity depends on whether the heat is added at constant volume, constant pressure, etc. 

Some C_p values for gasses can be found here (SI Units) or here (US Units). 

 

Heat Capacity at Constant Pressure Formula

\(\large{ Q = n \; C_p \; \Delta T }\)

Where:

Units	English	Metric
\(\large{ C_p }\) = heat capacity at constant pressure	\(\large{\frac{Btu}{F}}\)	\(\large{\frac{kJ}{K}}\)
\(\large{ n }\) = amount of substance	\(lbm\)	\(kg\)
\(\large{ Q }\) = heat transfer	\(\large{\frac{Btu}{hr}}\)	\(W\)
\(\large{ \Delta T }\) = temperature differential	\(\large{F}\)	\(\large{K}\)

 

Energy Conversion

 

Mass Conversion