Discussion on Testing Method of Ventilation System Air Leakage Rate

The air leakage of duct is an important indicator to inspect the quality of ventilation and air-conditioning system project. The strength and tightness of air duct in the ventilation and air-conditioning system is one of the important indicators to measure the processing and production quality of duct. According to the relevant provisions of the specification, the duct should be tested for its tightness according to the system category after the production and installation. In the construction, the tightness test of duct system is more cumbersome, and there is some difficulty in operation to really do well in the air leakage test of the duct system, as the testing task needs not only special testing equipment, instruments and, meters, but also certain technicians. This paper introduces a simplified air leakage testing method in accordance with the specification. The application and inspection in practical projects prove that the method is a correct and simple test method with strong operability.