Hop Dryer

The problem: Determining parameters to estimate the time it takes to dry a batch of hops in Eastern Nebraska. Hops are typically harvested at moisture contents over 80% and the dryer temperature must stay below 140 degrees F to preserve the essential oils and acids in the hops. With the varying ambient humidity and temperature of Nebraska, these limitations can greatly affect the drying efficiency and drying time in hops. ~ Annette and Bruce Wiles, Midwest Hop Producers, LLC

                The solution: Temperature, humidity, and air pressure measurements above and below the hops, as well as ambient conditions, during the drying process were taken to determine if the moisture content of the hops when completely dry, approximately 8 – 12%, could be realized without a sample removal or probe being inserted into the dryer.