.Buildings.Templates.Plants.Controls.HeatRecoveryChillers.Validation.EnableAndModeControl

Information

This model validates Buildings.Templates.Plants.Controls.HeatRecoveryChillers.Enable and Buildings.Templates.Plants.Controls.HeatRecoveryChillers.ModeControl. Consequently, it also validates Buildings.Templates.Plants.Controls.HeatRecoveryChillers.Controller, which is composed of the two former blocks.

The validation uses varying ∆T for HW across the HRC condenser and CHW across the HRC evaporator. The model verifies that:

• The HRC is effectively disabled when it is controlled in cooling mode and the leaving HW temperature is high.
• The HRC control mode switches from cooling to heating when the cooling load exceeds the calculated evaporator heat flow rate in heating mode.

Revisions

• December 10, 2024, by Michael Wetter:
  Updated input of hysteresis block and changed threshold to guard against numerical noise.
  This is for issue 4074.
• May 31, 2024, by Antoine Gautier:
  First implementation.