The turbine drives an electric generator to produce electricity, and part of ste
ID: 2993403 • Letter: T
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The turbine drives an electric generator to produce electricity, and part of steam is extracted to provide heating to campus buildings. The boiler provides 106 kg/h of steam at 8 MPa, 480
The turbine drives an electric generator to produce electricity, and part of steam is extracted to provide heating to campus buildings. The boiler provides 106 kg/h of steam at 8 MPa, 480 degree C, of which 4 times 105 kg/h is extracted between the first and second turbine stages at 1 MPa and diverted to the building heating load. Condensate returns from the building heating load at 0.95 MPa, 120 degree C and is mixed with liquid exiting the lower-pressure pump at 0.95 MPa. The entire flow is then pumped to the boiler pressure. Saturated liquid at 8 kPa leaves the condenser. The turbine stages and the pumps operate with isentropic efficiencies of 86 and 80%, respectively. The efficiency of the electric generator is 95% in converting turbine mechanical power to electricity.Explanation / Answer
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