https://reference.wolfram.com/system-modeler/libraries/Modelica/Modelica.Fluid.Pipes.BaseClasses.HeatTransfer.IdealFlowHeatTransfer.html
Modelica: Fluid.Pipes.BaseClasses.HeatTransfer.IdealFlowHeatTransfer - System Modeler Documentation
IdealHeatTransfer: Ideal heat transfer without thermal resistance
system modelermodelicafluidpipesdocumentation