Stencil: Zone HVAC Controls Sensors Stencil: Zone Temperature Controller
Type: Zone Control Temperature
Sub Type: Thermostat
EnergyPlus Object - ZoneControl:Thermostat
EnergyPlus Object - ZoneControl:Thermostat:TemperatureAndHumidity
The thermostatic zone control object is used to control a zone to a specified temperature. ZoneControl:Thermostat references a control type schedule and one or more control type objects which in turn reference one or more setpoint schedules. The example at the end of this section illustrates a complete zone thermostat specification including the control type and setpoint schedules.
The control type schedule and the list of control type/name pairs are directly related. The schedule defines the type of control that is to be used throughout the simulation. Valid Control Types are:
0 - Uncontrolled (No specification or default)
1 - Single Heating Setpoint
2 - Single Cooling SetPoint
3 - Single Heating/Cooling Setpoint
4 - Dual Setpoint (Heating and Cooling) with deadband
Thus, if the schedule referenced in the ZoneControl:Thermostat statement has a control type of 4 for a particular time period, this indicates that during that time period "Dual Setpoint with deadband” control is to be used. The specific "Dual Setpoint (Heating and Cooling) with deadband" control object to be used is specified in the list of control type/name pairs. Then the specific control type objects reference the thermostat setpoint temperature schedule to be used. Because only one control can be specified for each control type in a ZoneControl:Thermostat statement, there are only four pairs possible in a particular ZoneControl:Thermostat type/name list. This is because individual controls can be defined throughout the simulation, thus giving the user a full range of flexibility. Since putting in the name of the control type directly in the schedule would be very cumbersome, the control types are assigned a number which is used in the schedule profile.
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