Unformatted text preview: K . 3. (50) Consider the Rankine cycle below. ±ind boiler turbine condenser 3 4 1 2 P 3 = 15 MPa T 3 = 400 ˚C P 4 = 10 kPa x 4 = 1 P 1 = 10 kPa x 1 = 0 m = 100 kg/s . cold lake water in warm lake water out, Δ T = 20 ˚C pump P 2 = 15 MPa T 2 = 60 ˚C heat loss from non-adiabatic turbine = 5000 kW (a) the heat transfer rate to the boiler ( kW ), (b) the power output of the turbine ( kW ), (c) the overall thermal e²ciency, (d) the thermal e²ciency of a Carnot cycle operating between the same temperature limits, (e) an accurate sketch of the cycle on a T-s diagram, (f) the mass ³ow rate of external lake cooling water to exchange heat with the condenser if the lake cooling water temperature rise is designed to be 20 ◦ C ....
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This note was uploaded on 03/02/2012 for the course THERMO 20231 taught by Professor Powers during the Spring '10 term at Notre Dame.
- Spring '10