CHAPTER 7 DRYING - NZIFSTExplore further
2019-2-24u2002·u2002The value of U can be estimated from the conductivity of the drum material and of the layer of foodstuff. Values of U have been quoted as high as 1800 Jm-2s-1oC-1 under very good conditions and down to about 60 Jm-2 s 1 oC-1 under poor conditions. In cases where substantial quantities of heat are transferred by radiation, it should be
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