Enthalpy
Enthalpy, abbreviated as H, measures the sum of internal energy changes in heat under constant pressure of the system.
Enthalpy formula
\(\large{ H = U + p \; V }\) |
Where:
Units | English | Metric |
\(\large{ H }\) = enthalpy of a system | \(\large{\frac{Btu}{lbm}}\) | \(\large{\frac{kJ}{kg}}\) |
\(\large{ U }\) = internal energy of work done in a system | \(\large{Btu}\) | \(\large{J}\) |
\(\large{ p }\) = pressure | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
\(\large{ V }\) = volume of a system | \(\large{ft^3}\) | \(\large{m^3}\) |