Application Guide for EMS — EnergyPlus 9.2

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Variable Types[LINK]

Various types of output variables in EnergyPlus can be used as sensors in the EMS. It is important to understand some distinctions.

  • Reported variables have two update frequencies: zone and system. Zone variables are updated for each zone timestep. System variables are updated for each system timestep.

  • Reported variables have two types of content: averaged and summed. Averaged variables are state variables such as temperature and mass flow rate. Summed variables are quantities of energy such as electricity use.