Abstract: There is a grain aeration system for a grain bin. The system includes a gas entry duct configured to receive gas and a gas distribution pipe extending upwardly from the gas entry duct and having a height. The gas entry duct extends along a base of the grain bin. The gas distribution pipe includes a permeable section and an impermeable section. The permeable section includes a plurality of perforations. The permeable section is above the impermeable section. There is also a grain bin, having a surrounding wall and roof. There is a gas entry duct extending from outside the surrounding wall to inside the surrounding wall and a gas distribution pipe extending upward from the gas entry duct. The gas distribution pipe has a permeable section above an impermeable section.

Abstract: The invention relates to a V-shaped trough comprising two vertical side walls joined by two converging top walls, said walls being provided with a plurality of openings, thereby making the grain columns between the rows of troughs smaller inside the tower and increasing the sped of drying, since the thickness of the grain columns is reduced, thus shortening the drying time.

Abstract: A storage container system comprising an arrangement for adjustable ventilation intended for storing at least one article that is thermally sensitive and/or requires ventilation to the ambient atmosphere. The device includes at least one door and at least one aperture ventilation assembly. The aperture ventilation assembly includes a planar wall aperture array and a corresponding planar shutter aperture array, wherein the sliding relationship between the two arrays results in a plurality of ventilation levels, including a fully open state, and a closed state capable of substantially sealing off the contents of the container from the ambient atmosphere. Certain preferred embodiments include a plurality of storage compartments configured within the container's inner volume wherein each compartment is sealed from one another and possesses its own aperture ventilation assembly for ventilation adjustments.

Abstract: Method and apparatus for accurately determining an air quality level even when the temperature and humidity are varied can be achieved.