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A dryer is fed with 1500 kg/hr of wet potatoes. The product is 12 wt%moisture and the heat from the evaporated stream is recovered as itcools from steam at 100 °C to liquid water at 20 °C. The heat recoveredis 1092 MJ. Assuming a thermal recovery efficiency of 95%, calculate:

1.

i) the mass of water evaporated
Information
Heat of vapourisation of H2O(l) = 40.6 kJ mol[font="Arial"]-1
Heat capacity of H2O(l) = 4.18 J g-1 K-1



(edited 9 years ago)

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