I have a CS project in which the AHU will be provided by the tenant, since our energy modelling has been already simulated, we have no energy savings because of the missing information for the AHU fans of the tenant. With this, we decided to put the requirement on the tenant guidelines to be followed by the tenant in the future and that will be our proposed design to be used for energy modelling. But the bigger problem is, I don't know what are the requirements for the AHU fan power and besides, I've already searched the AHU fan power requirement in BHP over cfm or kw/cfm in the reference guide but I didn't see any tables or list. Is there someone who can give a tip where should I check or what guide should I check? Please help. 

Thanks a lot!