Maximizing Drying Efficiency

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Fotosearch_k10159421One of the things that makes grain drying a challenge is the number of uncontrollable variables—such as different moistures, temperatures, wind speeds, and humidities. But there are a few things you may have some control over (at least some of the time) that can make your drying more efficient. In this post we are going to highlight two of them:

Longer dryer runs. The trend to larger dryers has meant that in some cases there is only enough product for short runs, so the dryer may only run for a couple of hours, then be turned off for a few hours. The problem is that the grain that is left in the dryer during the shutdown will tend to come out over dried. And of course, the more often there are shutdowns the more grain will come out over dried. Ideally, the goal should be to try for longer dryer runs when possible because a dryer is most efficient when running continuously at capacity.

Tempering. Many times on the graphs we download from our customers, we can see the clear difference in moisture variation between day time and night time operation.

During the day, incoming product may go straight into the dryer, but as the product is coming from different locations, the moisture may vary significantly from one truck load to the next. This variation in moisture makes drying to a constant target that much more of a challenge.

In contrast, the product being dried at night may have sat for a few hours in storage having some time to temper—or an opportunity to mix with other product. The result is more consistent moisture going into the dryer and an easier process to control.

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