.Buildings.DHC.ETS.Combined.Subsystems.HeatPump

Information

This model represents a water-to-water heat pump, an evaporator water pump, and a condenser water pump. The heat pump model is described in Buildings.Fluid.HeatPumps.Carnot_TCon. By default, a variable speed condenser pump is considered, but a constant speed pump may also be represented by setting have_varFloCon to false. The evaporator hydronics and control are described in Buildings.DHC.ETS.Combined.Subsystems.BaseClasses.PartialHeatPump.

Condenser Controls

The system is enabled when the input control signal uEna switches to true. When enabled, on the condenser side,

• the condenser water pumps are commanded on and supply either the condenser mass flow rate set point provided as an input in the case of the variable speed condenser pump, or the nominal mass flow rate in the case of the constant speed condenser pump,
• the heat pump controller—idealized in this model—tracks the supply temperature set point at the condenser outlet.

Revisions

• November 15, 2023, by David Blum:
  Changed to extend partial base class with added condenser hydronics and control.
• May 3, 2023, by David Blum:
  Assigned dp_nominal to condenser pump.
  This is for issue 3379.
• November 16, 2022, by Michael Wetter:
  Set pumEva.dp_nominal to correct value.
• February 23, 2021, by Antoine Gautier:
  First implementation.