Improved energy efficiency in juice production through waste heat recycling

摘要: Berry juice concentrate is produced by pressing berries and heating up the juice. The by-products are berry skins seeds in a press cake. Traditionally, these have been composted, but due to their valuable nutrients, it could be profitable sell them instead. need separated dried moisture content of less than 10 %wt (on dry basis) order avoid fermentation. A plant north Sweden has studied increase energy resource efficiency, with special focus on drying system. This was done means process integration mass balance, theory from thermodynamics psychrometry along measurements plant. Our study indicates that system operated at full capacity without any external heat supply using waste supplied would achieved increasing efficiency dryer recirculation air flue gases industrial boiler. decrease about 52%. total use for thereby decreased 1262 kW 1145 kW. improvements compromising production quality.