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Description: In conventional dryers air is used as the heat and moisture transfer medium because it can be easily handled and does not by itself contaminate the grain. The low heat transfer coefficient of air coupled with the resistance to moisture diffusion within grain results in extended drying time and relatively low drying efficiency. A heated solid heat transfer medium is an alternative method of improving drying efficiency. Research conducted by various investigators on solid medium drying were summarized by Mittal et al. (1983). Earlier experiments conducted by Mittal et al. (1983) revealed that hot sand having a 12-30 grade rating was effective in reducing the moisture content of wheat from 17.0 to 14.5% wet basis (WB) with out damage to its milling quality. A 12-30 grade describes sand grains which pass a 12-mesh screen and are retained on a 30-mesh screen. Sand-to-grain mass ratios (SGMR) ranging from 3:1 to 5:1 were found to be effective in removing moisture from wheat with sand temperatures ranging from 90 to 110

Keywords: feasibility of drying wheat with various solid heat transfer media
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Citation: Mittal, G.S., Lapp, H.M. and J.S. Townsend 1985. FEASIBILITY OF DRYING WHEAT WITH VARIOUS SOLID HEAT TRANSFER MEDIA. Canadian Agricultural Engineering 27(2):121-126.
Volume: 27
Issue: 2
Pages 121 - 126
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Date: 1985
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Coverage: Canada
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