Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.HeadPressure.Validation

Collection of validation models

Information

This package contains validation models for the classes in Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.HeadPressure.

Note that most validation models contain simple input data which may not be realistic, but for which the correct output can be obtained through an analytic solution. The examples plot various outputs, which have been verified against these solutions. These model outputs are stored as reference data and used for continuous validation whenever models in the library change.

Package Content

Name	Description
Controller	Validation head pressure controller

Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.HeadPressure.Validation.Controller

Validation head pressure controller

Information

This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.HeadPressure.Controller. It demonstrates the setpoint controls according to the head pressure control. It has four instances:

It shows the following process:

• For instance enaWSE, since the economizer is enabled, the condenser water pump speed setpoint yConWatPumSpeSet equals the design condenser water pump speed; the maximum tower speed setpoint is maximum (1); and the head pressure control valve setpoint is mapped from the loop output.
• For instance disWSE, the economizer is disabled. The head pressure control valve is fully open. The maximum tower speed setpoint and the condenser water pump speed setpoint are mapped from the loop output, which ranges from 0 to 0.4. Thus, the maximum tower speed setpoint is from 1 to 0.28, and the pump speed setpoint is kept at maximum (1).
• For instance conSpePum, the pump speed is constant. The maximum tower speed setpoint and the head pressure control valve setpoint is mapped from the loop output, which ranges from 0 to 0.4. Thus, the maximum tower speed setpoint is from 1 to 0.28, and the head pressure control valve setpoint is kept at maximum (1).
• For instance varSpePum, the pump speed is variable. The maximum tower speed setpoint and the condenser water pump speed setpoint is mapped from the loop output, which ranges from 0 to 0.4. Thus, the maximum tower speed setpoint is from 1 to 0.28, and the pump speed setpoint is kept at the design condenser water pump speed.

Modelica definition