Enthalpy - An Overview

Enthalpy  of a system is the sum of the internal Energy and the product of pressure and volume.

Enthalpy represents the total energy stored in the system.

H = U + pV

where
H is the enthalpy
U is the internal energy
p is the pressure and
V is the volume

Enthalpy and Temperature
The change in enthalpy is directly proportional to the change in temperature.

dH = m C_p(T₂-T₁) Where C_p is the specific heat at constant pressure