Drying Corn with Coal on Iowa Farms
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A study was conducted to determine the feasibility of using Iowa coal as a fuel source for on-farm corn drying. Two furnaces tested operate at 50 to 55% efficiency. Two existing on-farm systems were described. A cost analysis showed energy costs for coal were less than for propane, but heating system costs are about equal and do not favor a shift to coal.
This article is from Applied Engineering in Agriculture 2 (1986): 241–245, doi:10.13031/2013.26749. Posted with permission.