Gritzki R, Richter W, Rösler M
Bibliographic info:
Proceedings of Room Vent 2002 (8th International Conference on Air Distribution in Rooms) - 8-11 september 2002 - Moltke's palace, Copenhagen - Denmark - pp 557-560, 3 Fig., 7 ref.

Natural ventilation is often a highly unsteady phenomenon, therefore steady criteria, very helpful for mechanical systems, cannot be used. This paper presents ideas for evaluating transient flow situations. The theory of the air exchange efficiency is extended to transient flows.