.Buildings.DHC.ETS.Combined.Controls.HeatPumpModular

Information

This is a controller for the heat pump system, which includes controls for the valves that ensure a minimum condenser outlet and a maximum evaporator outlet temperature.

The system is enabled if any of the input control signals uHeaSpa, uHeaDhw, or uCoo is true. When enabled, the following control is used:

• Two proportional controllers compute the required compressor speed to track the heating or cooling set point.
• Moving averages of these compressor speed signals determine whether the heating or the cooling compressor speed should be taken. The larger of the moving averages determines whether the heat pump is controlled to meet the heating or cooling demand.
• The compressor speed is modulated between a minimum and maximum speed based on the heating or cooling control signal. A rate limiter is used to avoid step changes in demanded compressor speed.
• The condenser and evaporator mixing valves are modulated with a proportional controller to maintain a minimum (resp. maximum) outlet temperature from the heat pump.

Revisions

• November 15, 2025, by Michael Wetter:
  Refactored implementation.
  This is for #4354.
• July 31, 2020, by Antoine Gautier:
  First implementation.