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Drying grain, especially corn, with conventional artificial drying methods requires great quantities of petroleum fuel during a short harvest period. Two systems of drying are used: high-speed, high-temperature batch or continuous-flow and low temperature in-storage drying. Solar energy was studied as an alternative or supplemental energy source for low-temperature drying at several different Midwest locations. Adoption of solar grain drying depends on supply and price of petroleum fuel and on competition for scarce fuel for other agricultural uses such as powering field operations and manufacturing fertilizer.


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