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18 March, 22:30

Many cereals are made with high moisture content so that the cereal can be formed into various shapes before it is dried. A cereal product containing 58% by mass is produced at the rate of 1000. kg/h. How much water must be evaporated per hour if the final product contains only 22% water?

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  1. 19 March, 02:20
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    461.54 kg/h

    Explanation:

    First lets calculate the mass flow of the dry product:

    Md=1000 kg/h * (1-0.58) = 420 kg/h

    The mass flow of the moist final product is then:

    Mm = 420 kg/h / (1-0.22) = 538.46 kg/h

    The water to be evaporated is then the difference between the feed and the product.

    W = 1000 kg/h - 538.46 kg/h = 461.54 kg/h
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