6.6. Air flows through a 0.25 m diameter duct. At the inlet the velocity is 300 m/s, andthe stagnation temperature is 360 K. If the Mach number at the exit is 0.3,determine the direction and the rate of heat transfer. With the same conditions atthe inlet, determine the amount of heat that must be transferred to the system if theflow is sonic at the exit.

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Engineering

Mechanical Engineering

rate of heat transfer. Wi

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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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

6.6. Air flows through a 0.25 m diameter duct. At the inlet the velocity is 300 m/s, and
the stagnation temperature is 360 K. If the Mach number at the exit is 0.3,
determine the direction and the rate of heat transfer. With the same conditions at
the inlet, determine the amount of heat that must be transferred to the system if the
flow is sonic at the exit.

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