Flow exponent

Exponent in the relation between air flow rate and pressure difference through an opening or crack. \( Q = C \Delta P ^n \)

Unit: dimensionless quantity

Symbol: \( n \)

Example values

Case Value Source
commercial buildings, USA 0.65 None Gowri et al. 2009 : Krishnan Gowri, David W Winiarski, and Ronald E Jarnagin. Infiltration modeling guidelines for commercial building energy analysis. Technical Report, Pacific Northwest National Lab.(PNNL), Richland, WA (United States), 2009.