Хранение и экономика
Porosity of grain bulk
Porosity is the fraction of the volume of voids between grain kernels relative to the total volume of the grain bulk.
Также говорят: void fraction of grain, grain bulk porosity
Porosity determines the airflow resistance of a grain mass, which is a critical parameter for designing aeration and drying systems. Proper estimation ensures that cooling fans have enough pressure to move air effectively through the entire depth of the silo.
Common mistakes involve failing to account for the impact of impurities or high moisture content, which can compact the bulk and drastically reduce porosity. This leads to uneven air distribution, hotspots, and potential spoilage of stored grain.