Isenthalpic definition
Isenthalpic means that neither heat nor work is exchanged with the environment. In a real process, entropy increases as the energy is dissipated inside the throttle during the process. A certain proportion of the refrigerant is evaporated during the throttling process. The value of this proportion can be identified from p-h diagrams. They contain lines that show the constant vapour content x in the wet steam area. This basically depends on the evaporation temperature and the supercooling of the refrigerant in the condenser.