Air at 90°C is being used to dry a solid food in a tunnel dryer. The product, with 1 cm thickness and a 5 cm by 10 cm su

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answerhappygod
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Air at 90°C is being used to dry a solid food in a tunnel dryer. The product, with 1 cm thickness and a 5 cm by 10 cm su

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Air at 90°C is being used to dry a solid food in a tunnel dryer. The product, with 1 cm thickness and a 5 cm by 10 cm surface, is exposed to the heated air with convective mass transfer coeffi cient of 0.1 m/s. Estimate the constantrate drying time, when the initial moisture content is 85% and the critical moisture content is 42%. The air has been heated fro m25°C and 50% RH. The product density is 875 kg/ m3 .
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