Question: Air at 1 atm and 15oC flows through a long rectangular duct 7.5 cm by 15 cm. A 1.8-m section of the duct is maintained

Air at 1 atm and 15oC flows through a long rectangular duct 7.5 cm by 15 cm. A 1.8-m section of the duct is maintained at 120oC, and the average air temperature at exit from this section is 65oC. Calculate the airflow rate and the total heat transfer.

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75 15 cm L 18 m air at 1 atm T w 120C T b inlet 15C T b exit 25C A c ... View full answer

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