A steam power plant operates on the reheat Rankine cycle. as shown in the schematic diagram (Fig Q 2). Steam enters the high-pressure turbine at 12.5 MPaand 550°C at a rate of 7.7 kg/s and leaves at 2...


A steam power plant operates on the reheat Rankine cycle. as shown in the schematic diagram<br>(Fig Q 2). Steam enters the high-pressure turbine at 12.5 MPaand 550°C at a rate of 7.7 kg/s and<br>leaves at 2 MPa. Steam is then reheated at constant pressure to 450° C before it expands in the<br>low-pressure turbine. The isentropic efficiencies of the turbine and the pump are 85% and 90%, re-<br>spectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at<br>the exit of the turbine is not to exceed 5%, then make all the necessary assumptions and determine<br>(a) the condenser pressure,<br>(b) the net power output, and<br>(c) the thermal efficiency.<br>Draw an accurate T-s diagram of the cycle and label all the property values on this diagram.<br>(3<br>High-P<br>Turbine<br>Low-P<br>Turbine<br>4<br>Boiler<br>Reheater<br>6)<br>2<br>(Pump-<br>Condenser<br>Fig. Q 2<br>

Extracted text: A steam power plant operates on the reheat Rankine cycle. as shown in the schematic diagram (Fig Q 2). Steam enters the high-pressure turbine at 12.5 MPaand 550°C at a rate of 7.7 kg/s and leaves at 2 MPa. Steam is then reheated at constant pressure to 450° C before it expands in the low-pressure turbine. The isentropic efficiencies of the turbine and the pump are 85% and 90%, re- spectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the exit of the turbine is not to exceed 5%, then make all the necessary assumptions and determine (a) the condenser pressure, (b) the net power output, and (c) the thermal efficiency. Draw an accurate T-s diagram of the cycle and label all the property values on this diagram. (3 High-P Turbine Low-P Turbine 4 Boiler Reheater 6) 2 (Pump- Condenser Fig. Q 2

Jun 11, 2022
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