Good afternoon,

My company is developing a LEED Core and Shell evaluation of a warehouse that does not have any climatization systems (it is considered "Unconditioned" because it has a very low permanent occupancy). However, it is expected an extraction system (extraction fans), solely to extract the air from inside the warehouse. In the thermal analysis, that is being developed according to ASHRAE 90.1 and 62.1 with Design Builder and Energy Plus, we are having some doubts about where to consider this system. Should we consider it as part of the process, and include the inputs of energy in “process” (“Activity” sheet), or should it be considered in “miscellaneous”? Also, should we consider it as mechanical ventilation in “Activity” sheet?

Thank you!