Theoretical analysis and site testing of energy consumption per unit air volume for fan transportation

The value of the energy consumption per unit air volume for fan transportation calculated according to JGJ/T 177-2009 do not meet the requirements of GB 50189-2005 during the on-site energy efficiency testing. Based on the theoretical analysis and field testing，considers that the calculation methods of energy consumption per unit air volume for transportation listed in the two standards have the same meaning but with different scopes of applicability, the former is used for design, and the latter is for AHU and mechanical ventilation systems. It will result in wrong result if the methods are improperly used.