Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
EnergyPlus has a fairly recent feature that can model this. You'll want to use the ZoneControl:Thermostat's Temperature Difference Between Cutout And Setpoint. So you would specify the setpoint as 21C and then specify this temperature difference field as 1C. When you use this feature, you will probably want to run EnergyPlus with very short timesteps to get the desired behavior. I don't know offhand if the openstudio application exposes this input.
Note that this is not a commonly used feature. Most use of EnergyPlus relies on longer timesteps (10 mins to an hour), where EnergyPlus calculates the fraction of the timestep that the HVAC system needs to operate to perfectly maintain the desired setpoint (21C in your case).
| | 2 | No.2 Revision |
EnergyPlus has a fairly recent feature that can model this. You'll want to use the ZoneControl:Thermostat's ZoneControl:Thermostat's Temperature Difference Between Cutout And Setpoint. So you would specify the setpoint as 21C and then specify this temperature difference field as 1C. When you use this feature, you will probably want to run EnergyPlus with very short timesteps to get the desired behavior. I don't know offhand if the openstudio application exposes this input.
Note that this is not a commonly used feature. Most use of EnergyPlus relies on longer timesteps (10 mins to an hour), where EnergyPlus calculates the fraction of the timestep that the HVAC system needs to operate to perfectly maintain the desired setpoint (21C in your case).
