Common Terms

  • Aeration: Conditioning of grain accomplished by fanning air through a grain pile, cooling it and thereby, preserving its quality
  • Airflow: The rate at which fanned air flows through a grain pile; this flow is measured in cubic feet per minute through a bushel of grain (cfm/bu)
  • Ambient Air Temperature: The surrounding (outside) air temperature of a grain bin or grain pile
  • BTU: British Thermal Units - a measure of heat output
  • Bulk Storage: Grain stored in a contained or uncontained pile inside or outside, usually on a temporary basis
  • Centrifugal: A force impelling air outward from the center of rotation
  • Drying Front: A horizontal layer of wet grain in a bin or pile, approximately one foot thick, which is formed during the drying process; this front moves in a vertical direction through the grain pile. Its moisture is eventually exhausted through wall vents or roof vents into the outside air.
  • Equilibrium: Condition of a system where all influences are balanced
  • Exhaust: Expelling, or expelled air originating within stored grain
  • Fines: Impurities in a grain pile such as dust, grain fragments, chaff, etc.
  • Fungus: Moulds, rusts, mildews, smuts, etc.
  • Impellor: Fan wheel assembly
  • Infestation: Spreading or swarming in or over in a sample causing contamination
  • Louvered: Pertaining to a device, which has slotted openings allowing air to flow out, but which prevents grains from entering
  • Microorganism: An organism (living thing) of microscopic size
  • Mites: Minute arachnids (spiders)
  • Pulse Crop: Peas, beans, lentils and other edible leguminous seeds
  • Quonset: A prefabricated shelter with a semicircular arching roof, set on a foundation
  • Relative Humidity: The amount of water vapour present in air expressed as a percentage of the amount needed for saturation at the same time
  • Static Pressure: The amount of airflow force needed to push fanned air through a grain pile, measured in inches of water column
  • Uniform: Not varying or variable, always having the same form or manner; even distribution