Ventilation : Simple determination of air flow rate in thermal plumes (NT VVS 113) Posted onMay 18, 1997September 18, 2020Author Report #: NT VVS 113 Approved: May 1997 Download pdf Size: 100.97 KB Abstract The scope of this Nordtest method is to describe a simple procedure for measuring air flow rate in thermal free-, walland corner plumes over heat sources. Categories and tags