HVAC tab in model data - Compact HVAC
You can enter details on the cooling system including the maximum capacity (at zone level).
The Cooling capacity can either be entered by hand or can be Autosized using the Cooling Design Calculations. If, immediately prior to a Simulation the Cooling capacity has not been entered (neither by hand nor from a previous Cooling Design Calculation) then a Cooling design autosizing simulation is started to calculate the capacity. The Plant sizing building model option controls the way this works.
You can change cooling capacities by hand if you wish but you should bear in mind that, by default, if Model Options change, all heating and cooling capacities are reset to zero. Set the Plant sizing model option to '2-Manual' to avoid this happening.
At building level select the chiller to be used to provide cold water to cooling coils. Only one chiller can be specified for the whole building in Compact HVAC, i.e. there is only a single cold water circuit served by one chiller in Compact HVAC simulations.
At building level enter the chilled water setpoint temperature to be used for sizing the chilled water loop and associated equipment.
At building level enter the condenser water temperature to be used for sizing the condenser loop and associated equipment.
Select from:
The EnergyPlus equipment object types which are used are CoolingTower:SingleSpeed or CoolingTower:TwoSpeed.
This schedule data is used in conjunction with the cooling setpoint temperatures on the Activity tab to define the time-varying cooling setpoint schedule in the zone. The operation schedule defines the times when full and setback setpoints should be met and the setpoint data on the Activity tab define the actual setpoint values. See Defining setpoint temperature schedules for more on this.