2) A steam power plant operates on an ideal regenerative rankine cycle with superheated steam leaving…
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Question “2) A steam power plant operates on an ideal regenerative rankine cycle with superheated steam leaving…”
2) A steam power plant operates on an ideal regenerative rankine cycle with superheated steam leaving the boiler, entering the turbine at 10 mPa,600C. X fraction of steam is extracted from the turbine at 0.6 mPa pressure for the high pressure open feedwater heater. Then x fraction more of steam is extracted from the turbine at 0.2 mPa pressure for the low pressure open feedwater heater . The condenser pressure in the cycle is 5 kPa. The mass flow rate of the steam (m) circulating in the cycle is 27kg/sec. a)Draw the sketch and the corresponding t-s diagram. b)Calculate the x fraction of steam extracted from the turbine at 0.2 mPa pressure for the low pressure open feedwater heater. c)calculate the Y fraction of steam extracted later from the turbine at 0.2 mPa pressure for the low pressure open feedwater heater. d)Calculate qH added to the system at the boiler ha e)calculate qL extracted from the cycle at condenser f)calculate the net power output (Wn) of the power plant 8) calculate the thermal efficiency of the power plant
2) A steam power plant operates on an ideal regenerative rankine cycle with superheated steam leaving the boiler, entering the turbine at 10 mPa, 600C. X fraction of steam is extracted from the turbine at 0.6 mPa pressure for the high pressure open feedwater heater Then x fraction more of steam is extracted from the turbine at 0.2 mPa pressure for the low pressure open feedwater heater. The condenser pressure in the cycle is 5 kPa.The mass flOw rate of the steam (m) circulating in the cycle is 27kg/sec a) Draw the sketch and the corresponding t-s diagram b)Calculate the x fraction of steam extracted from the turbine at 0.2 mPa pressure for the low pressure open feedwater heater. c) calculate the Y fraction of steam extracted later from the turbine at 0.2 mPa pressure for the low pressure open feedwater heater d) Calculate qH added to the system at the boiler e) calculate qL extracted from the cycle at condenser f)calculate the net power output (Wn) of the power plant g)calculate the thermal efficiency of the power plant
Answer
Answer 1
Answer 2
Q3: A steam-powered plant uses a perfect regenerative Rankine cycle and two open feedwater heaters. The turbine receives steam at 10 MPa, 600degC, and it exhausts to the condenser with 5 kPa. The turbine extracts steam at 0.6 MPa and 0.2MPa. Both feedwater heaters are saturated with water. 22 kg/s is the steam flow rate through the boiler. The T-s diagram shows the cycle. Determine (a) the net energy output of the power station and (b) its thermal efficiency.
Conclusion
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