.Buildings.DHC.ETS.Combined.Subsystems.BaseClasses.PartialHeatPump

Information

This model represents a water-to-water heat pump, as described in Buildings.Fluid.HeatPumps.Carnot_TCon, the condenser pump, and the evaporator side hydronics and control.

Evaporator Controls

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

• the evaporator pump is commanded on and supplies the nominal mass flow rate,
• a three-way diverging valve is used to bypass flow through the evaporator and is controlled by a PI controller to maintain dT_nominal across the district supply and return flows.

Contents

Name	Description
Medium1	Medium model on condenser side
Medium2	Medium model on evaporator side

Revisions

• February 15, 2024, by Ettore Zanetti:
  Made heat pump model dynamic and added junction.
• November 15, 2023, by David Blum:
  Changed to partial base class with evaporator hydronics and control.
• November 16, 2022, by Michael Wetter:
  Set pumEva.dp_nominal to correct value.
• February 23, 2021, by Antoine Gautier:
  First implementation.