Question: I need the answer as soon as possible Q4. Cubical copper pellets (20mm aside) are used to store heat in a heat recovery process. The

I need the answer as soon as possible

Q4. Cubical copper pellets (20mm aside) are used to store heat in a heat recovery process. The pellets are to be heated from 70C to 180C using air at 250C. The convective heat transfer coefficient attainable is 60 W/ mK. The pellets are then to be cookd to WC using air at 20C with a convective heat transfer coefficient of 40 W/mK. Determine the batch time (heating and cooling). Ako, calculate the heat recovered for 1 kg of material per batch

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