Question

A power plant uses an adiabatic single-flash process coupled with a liquid-vapor separator and a turbine....

A power plant uses an adiabatic single-flash process coupled with a liquid-vapor separator and a turbine. (1) Flash Chamber (2) Seperator (3) Steam Turbine. Saturated liquid water enters the flash chamber (which behaves like a throttling valve) at 230 degrees C at a rate of 44 kg/s and leaves at a pressure of 700 kPa. The stream then enters the separator where the liquid is collected at the bottom of the unit while the vapor portion of the stream continues to the turbine. The steam leaving the turbine has a pressure of 30 kPa and has a quality of 0.93.

(a) What is the quality of the steam immediately after the flash chamber?

(b) What is the rate of liquid extration in the separator unit? (kg/s)

(c) What is the rate of work produced by the turbine? (kW)

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