Chillers

Chiller:Electric:EIR

Used in:   Chilled water loop, supply side

Chillers provide chilled water to cooling coils, chilled beams and cooled ceilings. Chiller components are used in both Compact and Detailed HVAC:

• When using the Compact HVAC model option, a chiller component can be selected at building level on the HVAC tab when the main HVAC system type is VAV or CAV or if one or more zone in the model has a fan coil unit.
  
  
• When using the Detailed HVAC model option, chiller can be added only when you are currently located in a Chilled water supply loop. Chillers can be placed using the Add Chiller command.

When using Detailed HVAC, to edit an existing chiller go to the Chilled water supply loop (HVAC System > Chilled water loop > Supply loop) level where the chiller is placed, click on the chiller icon to highlight it then either right click and select the Edit selected component menu option or, when using Learning mode, click on the Edit icon in at the top of the info panel.

These chiller types are available in Detailed HVAC:

• Chiller - Constant CoP - a simple model with constant efficiency, i.e. not using performance curves.
• Chiller - EIR - a more detailed model using 3 performance curves to determine cooling capacity and CoP from the chiller load and outside air temperature.