IMPINGEMENT STEAM DTYING OF PAPER

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Abstract
A mathematical model is presented to predict the drying rates and energy consumption for the process of impingement steam drying of paper during the constant-rate drying period. Preliminary experiments have verified the validity of the simulation model. The predicted results show consumption may be as low as 640 kJ/kg water evaporated while hot air Yankee dryers typically consume 5020 to 7100 kJ/kg water evaporated