D.4 Gas Penetration into Buildings
285
Integration of this equation with the boundary condition of c i (t = 0) = 0 yields:
c i = c a
1 − e
−
˙
V
V t
(D.12)
According to this model, a building with low air exchange rate (where ˙
V /V is
ca. 0.5 hr −1 ) provides significantly more protection than the interior of a car (where
˙
V /V is ca. 30 hr −1 ).
285
Integration of this equation with the boundary condition of c i (t = 0) = 0 yields:
c i = c a
1 − e
−
˙
V
V t
(D.12)
According to this model, a building with low air exchange rate (where ˙
V /V is
ca. 0.5 hr −1 ) provides significantly more protection than the interior of a car (where
˙
V /V is ca. 30 hr −1 ).