.AixLib.Fluid.MassExchangers.MembraneBasedEnthalpyExchangers.BaseClasses.AirDuct.MassTransfer .AixLib.Fluid.MassExchangers.MembraneBasedEnthalpyExchangers.BaseClasses.AirDuct.MassTransfermodel MassTransfer = BaseClasses.MassTransfer.LocalDuctConvectiveMassFlow;