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RE: [EnergyPlus_Support] Control HVAC states in EnergyPlus


“energize at some time point” does not explain your intention very clearly.  However, you should investigate:

·         For time-based availability, use the availability schedule for your heating components.  Stage 1 / Heating coil 1  can be defined independently of Stage 2 / Heating Coil 2, etc

·         Staging of capacity can be accomplished automatically using one of the MultiStage coils

·         Temperature-based staging can be accomplished with some difficulty using separate coil / stage components and EMS (I think this is so, but have not attempted it.)


James V Dirkes II, PE, BEMP, LEED AP
Energy Analysis, Commissioning & Training Services
1631 Acacia Drive, Grand Rapids, MI 49504 USA
616 450 8653


From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of lu.jiakang@xxxxxxxxx
Sent: Monday, October 21, 2013 9:31 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Control HVAC states in EnergyPlus



Hi all,

I am trying to control HVAC states in EnergyPlus with more flexibility than the predefined thermostat. One example scenario is, in the simulation of multistage heating, my control logic would like to energize stage-1 heating only at some time point. Is it possible to do so in EnergyPlus?

My guess is that this may require a customized thermostat module that controls HVAC system via a set of pins/flags. But I did not find how to get it started in the tutorials. How shall I get it started? 


I really appreciate your suggestions. Thank you



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