FIELD: aero- and hydrodynamics; heat and mass exchange apparatuses. SUBSTANCE: primary flow of fluid medium is formed as pipe-like at longitudinal translational motion in direction opposite to escape from spatial area; removal of products of interaction is effected inside pipe-like flow. Pipe-like primary flow of fluid medium may be set in vortex motion; M number of flow of interaction products inside spatial area does not exceed 1 as a rule. EFFECT: higher efficiency. 2 cl, 2 dwg
