Question

Combustion products are routed to the heat exchanger through a steel pipe (k = 60 W/mK) of 10 mm outside diameter, 6 mm wall thickness, and 400m length. The representative environmental conditions involve air 0 °C and velocity of 3 m/s in a cross flow over pipe. A 8 mm-thick coating of insulation (k = 0.02 W/mK) is at the outer surface of the pipe. Determine the temperature of combustion gases at the pipe outlet. Determine the savings associated with application of the insulation layer compared to the heat loss from an uninsulated pipe.

Answer 1

Answeबहर गजल रकप

Explanation: