Hot exhaust gases leaving a stationary diesel engine at 450 °C (1 atm) enters into a 15-cm-diamter pipe at an average velocity of 4.5 m/s. The surface temperature of the pipe is 180 °C. Determine the pipe length if the exhaust gases are to leave the pipe at 250 °C after transferring heat to water in a heat recovery unit. Use properties of air for exhaust gases. T, = 180°C Exhaust D= 15 cm gases 450°C 250°C 4.5 m/s L.

Hot exhaust gases leaving a stationary diesel engine at 450 °C (1 atm) enters into a 15-cm-diamter pipe at an average velocity of 4.5 m/s. The surface temperature of the pipe is 180 °C. Determine the pipe length if the exhaust gases are to leave the pipe at 250 °C after transferring heat to water in a heat recovery unit. Use properties of air for exhaust gases. T, = 180°C Exhaust D= 15 cm gases 450°C 250°C 4.5 m/s L.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.34P

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