Air terminal units, air terminal devices, dampers and valves: Sound power level by sound intensity (NT ACOU 091) Posted onJanuary 15, 1995October 2, 2020Author Report #: NT ACOU 091 Approved: January 1995 Download pdf Size: 207.25 KB Abstract This NORDTEST method specifies the way in which the sound power level of air terminal units, high/low velocity/pressure assemblies, dampers and valves used in air diffusion and air distribution is to be determined using sound intensity.
