Abstract: A system provides pneumatic conveyance of grain or other dry, loose commodities. The system conveys the commodity from a first piece of equipment, for example a grain dryer, to a second piece of equipment, for example, a grain bin. A variable speed blower motor is mounted to drive air through a transport pipe, and the blower motor speed is controlled by a processor and software providing a desired pressure to efficiently move the commodity based on the rate of discharge into the transport pipe, while minimizing wasted energy or damage to the commodity that is often experienced when more than the required pressure is provided by a blower motor. Parameters used in determining the blower motor speed may include the gauge pressure measured in the transport pipe, the rate of discharge of commodity into the transport pipe, and the blower motor current or power.

Abstract: A system provides pneumatic conveyance of granular materials, for example, grain or other dry, loose commodities. They system conveys the commodity from a first piece of equipment, for example a grain dryer, to a second piece of equipment, for example, a grain bin. A variable speed blower motor is mounted to drive air through a transport pipe, and the blower motor speed is controlled by a processor and software to provide a desired pressure to efficiently move the commodity based on the rate of discharge into the transport pipe, while minimizing wasted energy or damage to the commodity that is often experienced when more than the required pressure is provided by a blower motor. Parameters used in determining the blower motor speed may include the gauge pressure measured in the transport pipe, the rate of discharge of commodity into the transport pipe, and the blower motor current or power.