Question

In: Mechanical Engineering

A gas turbine expands air adiabatically at 1000 kPa and 550 ⁰C to 120 kPa and...

A gas turbine expands air adiabatically at 1000 kPa and 550 ⁰C to 120 kPa and 130⁰C. Air enters the
turbine through a 0.25 m
2 opening with an aveage velocity of 45 m/s, and exhausts through a 1 m2
opening. Assume the air is ideal gas with constant specific heats. Take the constant pressure specific
heat and gas constant of air as Cp= 1.05 kJ/(kg K) and R=0.287 kJ/(kg K), respectively. Determine;
(a) the mass flow rate of air through turbine and
(b) the power produced by the turbine.

Solutions

Expert Solution

Using the Continuity equation and SFEE we can solve both parts as below-


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