Question

SKMM 3443) Nitrogen gas is flowing in a pipe of a2m-diameter and 10-m-length. The gas enters the pipe at 150 Citha owt of 0.03 kgs. For safety, the ostide surface temperature of the pipe is maintained at a comstant tempernture of a5 C Measurement indicates that the inner surface temperature of the pipe is chose to 45 C Using nitrogen gs peroperties at 100 C. determine n) the sompersture of the gas at the ??) tht tweofheat transfer from the gas, Eat 02 (a) pipe exuit. "C and 20 marka (b) If the cicular pipe in part (a) above is replaced with a pipe of square coss section wil the beat transfier rate increase, decreaset, or unchangn 25m 25 Explain (3 marka)

Answer 1