METHOD OF DETERMINING AIR FILTRATION RATE IN METAL SILO Russian patent published in 2020 - IPC A01F25/16 

FIELD: agriculture.

SUBSTANCE: invention relates to agrarian industry, namely, to storage of grain in metal silos. Differential pressure gauge is used to measure pressure and pressure drop of air inside silo. Air pressure inside the silo is collected by 12 nozzles arranged at three height levels. At first level, at height from 0.9 to 1.1 meters from air distributing grid. Same arrangement of nozzles at the second level at height from 1.8 to 2.2 meters from the grid. On the third level, at height of 3.6 to 4.4 meters from the grid, four nozzles are installed through 90° relative to each other. Height of the grain mass of from 10 to 25 meters, the mesh size of the ventilation grating of 0.08 to 0.2 meters, the air extraction channel cross section of 0.05 to 0.15 m² in the process of venting, when the air supplying from 9.6 to 10.4 m³/h t.

EFFECT: technical result is higher accuracy of determining air filtration rate for stored grain, providing longer storage life due to timely, energy-efficient and accurate monitoring of parameters: humidity and temperature.

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