Question

Air at 10°C and 80 kPa enters the diffuser of a jet engine with a velocity of 200 m/s. The inlet area of the diffuser is 0.4 m2. The air leaves the diffuser with a velocity that is very small compared with the inlet velocity. Determine the mass flow rate of the air in kg/s.

Answer 1

A. The mass flow rate of air would be 78.8 kg/s

B. The exit temperature would be 303 K

Step-by-step explanation:

The principle of heat exchange and balance is used to solve the problem as contained in the attached images;