Definition: Total heat content of a refrigerant, including both sensible heat (temperature change) and latent heat (phase change). Measured in kJ/kg (kilojoules per kilogram).
Why It Matters: Refrigeration cycle calculations use enthalpy differences to determine system capacity and efficiency. Critical for proper system design and performance analysis.
Related Terms: Latent Heat, Sensible Heat, Pressure-Enthalpy Diagram