.AixLib.Fluid.DistrictHeatingCooling.Demands.ClosedLoop.DHCSubstationHeatPumpDirectCooling.Medium .AixLib.Fluid.DistrictHeatingCooling.Demands.ClosedLoop.DHCSubstationHeatPumpDirectCooling.Mediumpackage Medium = Modelica.Media.Interfaces.PartialMedium;