Water is the working fluid in an ideal Rankine cycle. A power plant uses superheated steam which enters the turbine at 16 MPa and 520°C. Turbine and pump efficiencies are 8 and 78%, respectively. The condenser pressure is 8 kPa (T satn = 41.51° C) The mass flow rate of steam entering the turbine is 120 kg/s. The isentropic enthalphy of the exhaust steam in kj /kg steam Given at P = 16 Mpa and T 520C ; H2 = 2580.6 kJ/kg at P = 8 Mpa; HL3 = 172.88 kJ/kg steam Hv3 = 2577.0 kJ/kg steam Hint: Use x in the Isentropic calculation of S O A. -1638.2 O B. -4742.6 O C. 4742.6 O D. 1638.2

Water is the working fluid in an ideal Rankine cycle. A power plant uses superheated steam which enters the turbine at 16 MPa and 520°C. Turbine and pump efficiencies are 8 and 78%, respectively. The condenser pressure is 8 kPa (T satn = 41.51° C) The mass flow rate of steam entering the turbine is 120 kg/s. The isentropic enthalphy of the exhaust steam in kj /kg steam Given at P = 16 Mpa and T 520C ; H2 = 2580.6 kJ/kg at P = 8 Mpa; HL3 = 172.88 kJ/kg steam Hv3 = 2577.0 kJ/kg steam Hint: Use x in the Isentropic calculation of S O A. -1638.2 O B. -4742.6 O C. 4742.6 O D. 1638.2

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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