Specific Enthalpy

Specific enthalpy is a measure of the total energy stored within a substance per unit mass, combining its internal energy (the energy within its molecules) and the energy required to make room for it by displacing its surroundings (pressure-volume work). It is a useful concept in thermodynamics to analyze heat transfer and work during processes like heating, cooling, or phase changes. Essentially, it represents how much energy is contained in a substance's current state, helping engineers understand and optimize energy transfer in systems like engines, refrigerators, and power plants.