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Besides energy modeling, you may need to use the exceptional calculation methodology (ECM) when any of the following situations occur: The energy software cannot carry out calculations for a specific system like natural ventilation or unusual HVAC eq

Besides energy modeling, you may need to use the exceptional calculation methodology (ECM) when any of the following situations occur: 

  • The energy software cannot carry out calculations for a specific system like natural ventilation or unusual HVAC equipment.
  • Process loads are different in baseline and design cases and can influence total energy cost savings.
  • The proposed design can’t demonstrate savings with the modeling protocol and needs additional calculations. 

Credits: 
EAc1
Project phase: 
Pre-Design
Credit tip type: 
Hot Tip