A continuous countercurrent drier is used to dry 425.6 kg dry solid / h containing 0.035...
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A continuous countercurrent drier is used to dry 425.6 kg dry solid / h containing 0.035 kg total moisture / kg dry solid. The granular solid enters at 25° C and leaves at 60°C. The heating medium is air which enters at 84.2° C and has a humidity of 0.0175 kg moisture/ kg dry air and leaves at 32.8° C. Calculate the air flow rate and the outlet humidity, assuming the heat losses from the drier to be 9300 kJ/h. The constant heat capacity of the dry solid is 1465 kJ/kg K. (12) (April '98). A continuous countercurrent drier is used to dry 425.6 kg dry solid / h containing 0.035 kg total moisture / kg dry solid. The granular solid enters at 25° C and leaves at 60°C. The heating medium is air which enters at 84.2° C and has a humidity of 0.0175 kg moisture/ kg dry air and leaves at 32.8° C. Calculate the air flow rate and the outlet humidity, assuming the heat losses from the drier to be 9300 kJ/h. The constant heat capacity of the dry solid is 1465 kJ/kg K. (12) (April '98).
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To calculate the air flow rate we have to determine the amount of moisture that needs to be removed ... View the full answer
Related Book For
Elementary Principles of Chemical Processes
ISBN: 978-0471720638
3rd Edition
Authors: Richard M. Felder, Ronald W. Rousseau
Posted Date:
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