Sherman M.H. Grimsrud D.T. Sonderegger R.C.
Bibliographic info:
Proceedings ASHRAE/DOE. Conference "Thermal performance of the exterior envelopes of buildings" Dec. 3-5 1979 Florida.

Outlines the problems of modelling air infiltration. Reports measurements of the leakage function measured at low pressures using an alternating pressure source with variable frequency and displacement. Synchronous detection of the indoor pressure signal created by the source eliminates the noise due to fluctuations caused by the wind. Presents comparisons between these results and extrapolations of direct fan leakage measurements.