METHOD TO CONTROL AIR PERMEABILITY OF FENCING BUILDING STRUCTURES OF CAVITY OF CLOSED SEALED CONTOUR Russian patent published in 2013 - IPC G01M3/26 

FIELD: testing equipment.

SUBSTANCE: plenum and exhaust ventilation systems are used, which service this cavity of the closed sealed contour (CSCC), at the same time with the disconnected exhaust ventilation system and its closed stop and control device (SCD), the permissible excessive pressure is developed in the CSCC by a fan of the plenum ventilation system, controlling the excessive pressure value, afterwards volume speeds are measured, which arrives into the CSCC of the air duct of this plenum ventilation system, and the air flow arriving from the CSCC, besides, the value of actual specific air permeation of one m² of OSK of CSCC at the permissible excessive pressure in the CSCC shall not exceed the value of rated specific air permeation of one m² of OSK at the above permissible excessive pressure in the CSCC, and the value of the actual specific air permeation of one m² of OSK at the permissible excessive pressure in the CSCC and the rated specific air permeability of one m² of fencing building structures of the cavity of the closed sealed contour at the permissible excessive pressure in it is defined by the method described in the formula clauses.

EFFECT: possibility to use the method when testing aseptic objects with higher requirements to air permeation of their fencing building structures.

2 cl, 1 dwg