Application and discussion of noise limit and air leakage rate of modular air handling units

Through the discussion on the limit of sound pressure level in GB/T 14294-2008 Central-station air handling units, proposes a reasonable calculation method of noise limit, which provides a reference for deriving the noise limit at high static pressure and large air rate. In addition, in combination with EN 1886-2007, compares the judgment criteria of the air leakage rate and provides the optimization suggestion of the correct air leakage rate according to the surface area and the design static pressure of the unit.