Comparison of Concurrent-Flow, Crossflow, and Counterflow Grain Drying Methods (Classic Reprint)

Comparison of Concurrent-Flow, Crossflow, and Counterflow Grain Drying Methods (Classic Reprint) PDF

Author: T. L. Thompson

Publisher: Forgotten Books

Published: 2018-10-07

Total Pages: 36

ISBN-13: 9781391309125

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Excerpt from Comparison of Concurrent-Flow, Crossflow, and Counterflow Grain Drying Methods Heated-air grain dryers are used on many farms and at most grain elevators in the Midwest. Field shelling of corn places a heavy seasonal load on these drying systems because most of this com has to be dried before it is acceptable for market or storage. Many attempts have been made to speed up grain drying processes. Grain dryer capacity can be increased by using higher drying air temperatures, but the quality of the dried grain is generally lowered. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Drying and Storage Of Grains and Oilseeds

Drying and Storage Of Grains and Oilseeds PDF

Author: Donald B. Brooker

Publisher: Springer Science & Business Media

Published: 1992-01-31

Total Pages: 478

ISBN-13: 9780442205157

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This text and reference discusses the drying of grains, in particular the staple cereals, maize, rice, and wheat, and the oilseeds, soybeans and canola. The basic physical and thermodynamic properties of grain and air are examined, and the theory of the drying process is developed. Design of the optimum operating conditions for on-farm and off-farm dryers are presented. The book is written as an engineering text, but should also prove beneficial to all who are interested in the proper drying and storage of grains. Examples and problems are given in both S.I. and Imperial units.

Predicted Performances and Optimal Designs of Convection Grain Dryers

Predicted Performances and Optimal Designs of Convection Grain Dryers PDF

Author: T. L. Thompson

Publisher:

Published: 1967

Total Pages: 138

ISBN-13:

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Mathematical drying models were formulated to predict the performance of the three basic convection grain dryer designs. Energy and equilibrium relationships from the literature and the results from experimental investigations were used as building blocks for the development of the models. Simultion of the movement of thin layers of grain in conveention grain dryers led to evaluations of the performance of crossflow, concurrent flow, and conterflow grain dryers. In a crossflow dryer the drying air flows perpendicular to the flow of grain, where as in concurrent and counterflow dryers the drying air flows in the same direction as and conterflow dryers the drying and air flows in the same direction as and in the opposite direction to the flow of grain, respectively. The performance characteristics of the three dryer desingns were found to be significantly different. Crosflow dryers overdried the grain on the air input side and underdried it on the exhaust air side. The concurrent flow process removed most of the moisture during the initial stages of drying and then bad a built-in tempering period to relieve some of the drying stress. Counterflow grain dryers have a higher moisture removal rate per foot of bed depth than either of the other two drying methods operating with the same drying conditions. (...).

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