Determine the exit temperature of the air and the rate of

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Hot air at atmospheric pressure and 80oC enters an 8-m long un-insulated square duct of crosssection 0.2mx0.2m and negligible thickness. The duct air passes through the attic of a house at a rate of 0.15m3/s. The duct surface is isothermal at 60oC. Determine the exit temperature of the air and the rate of heat loss from the duct to the attic space. Assume fully-developed flow in the duct throughout.

Reference no: EM13633248

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