Buildings: Total flow rate of air – continuous measurement (NT VVS 048) Posted onFebruary 21, 1986September 25, 2020Author Report #: NT VVS 048 Approved: February 1986 Download pdf Size: 81.15 KB Abstract The scope of the Nordtest method is to describe a method for continuous measurement of air-change rates in occupied and unoccupied buildings. Categories and tags