EnergyPLus regular and advanced outputs do not match

asked 2017-05-16 03:30:31 -0500

Ehsank gravatar image

My question is about the EnergyPlus outputs in “Annual Building Sensible Heat Gain Components” table (attached). The “Opaque Surface Conduction and Other Heat Removal” is obtained based on the sum of all the other components. However, when I check the advanced outputs of EnergyPlus it doesn’t match. Difference is about 0.5-2 GJ.

For example, when I obtain the following items from advanced outputs, the data related to window heat transfer are correct and similar, which is the same as the table mentioned above. But summation for rest of the data doesn’t match with the “Opaque Surface Conduction and Other Heat Removal”. Am I missing something that is contributing to those numbers in the table that I am not considering?

Advanced outputs that I am talking about are as follow:

  • Surface Average Face Conduction Heat Transfer Energy (For all the opaque components in contact with exterior environment such as exterior walls, roof, and floor)
  • Surface Window Heat Loss Energy
  • Surface Window Heat Gain Energy

5.736+(-0.955)+2.700+(-1.904)= 5.577

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