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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.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Hot exhaust gases

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.
Transcribed Image Text: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.
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