This model allows a specified amount of heat flow rate to be "injected" into a thermal system at a given port. The constant amount of heat flow rate Q_flow is given as a parameter. The heat flows into the component to which the component FixedHeatFlow is connected, if parameter Q_flow is positive.
This model is identical to
Modelica.Thermal.HeatTransfer.Sources.FixedHeatFlow, except that
the parameters alpha and T_ref have
been deleted as these can cause division by zero in some fluid flow models.