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Description: Full-scale field experiments in 1978 and 1979 demonstrated that ambient and solar-assisted ambient corn drying was no more energy efficient than conventional drying (Otten and Brown 1980). Subsequent simulation results, obtained with a model developed by Mittal and Otten (1980) verified that even at minimum airflow rates, low-temperature drying with continuous fan operation is indeed not energy efficient in poor drying years in Southern Ontario. Despite these disappointing observations, such advantages as high grain quality and flexible harvest schedule were sufficiently important to continue the work. The simulation and experimental results had already indicated that the ambient conditions in Ontario vary significantly throughout the long drying period. Furthermore, with the normally prevailing warm and moist weather, the total allow able drying time is restricted and airflow rates of more than 26L/(sec-m3) are necessary to dry 24% (wet basis) moisture corn without excessive spoilage. It is also possible that during a large part of the drying period little or no drying occurs because of adverse weather conditions. In fact, the data indicate that overall rewetting of the grain occurs frequently with continuous fan operation (Mittal and Otten 1980).

Keywords: evaluation of various fan and heater management schemes for low-temperature corn drying
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Citation: Mittal, G. S. and L. Otten 1981. EVALUATION OF VARIOUS FAN AND HEATER MANAGEMENT SCHEMES FOR LOW-TEMPERATURE CORN DRYING. Canadian Agricultural Engineering 23(2):97-100.
Volume: 23
Issue: 2
Pages 97 - 100
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Date: 1981
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Publication type: Journal
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Coverage: Canada
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