Question

Air is expanded isentropically in an adiabatic turbine, to produce 115 kW of power. If the mass flow rate is 0.75 kg/s, and the air at the exit is 500 K and 155 kPa, then what is the temperature and pressure at the inlet of the turbine?

(a) The temperature is? K

(b) The pressure is? kPa

NOTE: Do NOT approximate the air as having a constant specific heat.

Answer #1

NO INTERPOLATION REQUIRED
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Isentropic power in kW
b. the temperature at the turbine exit
temperature at exit in degrees C
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