Question
The pressure, temperature and velocity of air flowing in a pipe are 5 bar, 500 K and 50 m/s,
respectively. The specific heats of air at constant pressure and at constant volume are 1.005 kJ/kgK
and 0.718 kJ/kgK, respectively. Neglect potential energy. If the pressure and temperature of the
surroundings are 1 bar and 300 K, respectively, the available energy in kJ/kg of the air stream is
respectively. The specific heats of air at constant pressure and at constant volume are 1.005 kJ/kgK
and 0.718 kJ/kgK, respectively. Neglect potential energy. If the pressure and temperature of the
surroundings are 1 bar and 300 K, respectively, the available energy in kJ/kg of the air stream is
Answer: Option B
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