Fan efficiency definition
Fan efficiency. (ηfan) means efficiency of the individual fan(s) in the ventilation unit as defined in and tested in accordance with Commission Regulation 327/2011.
Fan efficiency. (η) means the ratio of the fan gas power output Pu and the electric input power Pe, both expressed in W and determined at BEP, multiplied with correction factors for power conversion Cp, part load compensation Cc and guard compensation Cguard, with a distinction between ‘static’ or ‘total’ efficiency depending on whether the fan gas power Pu has been determined with respectively the fan static pressure or fan pressure, in accordance with point