diffusion chambers of different designs. It is shown that the efficiency of heterogeneous condensation is, to a
substantial extent, governed by the processes of heat and mass transfer inside a chamber condenser. Integral
parameter
(R) representing the probability that a nanoparticle with radius R is covered with a condensate film in a laminar flow chamber is calculated. It is established that, in air–water vapor mixtures, the radius of heter-
ogeneous water droplets may amount to several micrometers and efficient condensation begins on spherical
nanoparticles when their radii exceed 5 nm.