The laboratory prototype, developed as an alternative soybean harvester, captured over 85% of the seeds that were threshed under laboratory conditions.
The pneumatic clean-ing system was capable of removing over 95% of chaff and material-other-than-grain, but broken stalks need to be removed before the venturi.
Over 92% of the beans fed into the conveying system ended up in the grain tank. Out of the beans that were captured in the collection tray, 8% escaped through the muffler outlet of the secondary cleaning system as losses.
According to the above results, it was concluded that the Noyes and Pfieffer (1985) criteria were effective in designing a dilute-phase pneumatic conveying system