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Steam steadily enters a fully insulated turbine at 1 bar and 240 C. Pressure at the outlet of the turbine is measured to be 0.5 bar. Turbine extracts 308.6 kJ/kg energy off the inlet flow. Calculate rate of entropy production within this turbine [25 points]. Neglect changes in potential and kinetic energy.

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Answer:

0.133 Wlk.

Explanation:

Given data: P. = I bar = 100 kpa T, = 2400 = 513k P2= a.s bar = .sokpa da = 308.6 kJ /kg we know that in Turbine Reversible adiabatic (fully insulated] . process is takes place 1. Ti - (LV Të 14-1 513 50 To: 420.83 k) In data . Turbine extracts 308.6 kilig. from inlet flow . des is disa Entegy = - de mange : + -308.6 513 30 420 = 0.132 ields= 0.133 Wlk.

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