What is the term for the measurement of total heat content of air in BTUs per pound?

The term that refers to the measurement of total heat content of air in BTUs per pound is enthalpy. Enthalpy is a thermodynamic quantity that combines the internal energy of a system with the product of its pressure and volume. When discussing air, it considers both sensible heat (the heat that causes a change in temperature) and latent heat (the heat absorbed or released during phase changes, such as evaporation or condensation).

This comprehensive measurement makes enthalpy particularly valuable in HVAC applications, where understanding the total heat content in air is crucial for effective heating, ventilation, and air conditioning design and operation. By using BTUs per pound as a unit, it allows for clear calculations and assessments of energy transfer in thermal systems, facilitating better energy management and efficiency in HVAC designs.