Problem 2 - Steam Power Cycle with Reheat and Irreversibility A steam power plant operates on the reheat Rankine cycle with irreversibilities at steady-flow conditions. Steam enters the high-pressure turbine at 12.5 MPa and 550°C at a rate of 8 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 percent and 75 percent, respectively. Steam leaves the condenser as a saturated liquid at 15 kPa. Assume that the turbines are adiabatic and the changes in kinetic and potential energy are negligible. Please answer the following: a. As you solve this problem, complete the values in the table below. Assume that the pressure drops are negligible. Some of the values from the problem statement are already entered. State P (kPa) T (°C) 15 1 53.97 2 3 4 4s 5 66 12,500 550 15 6s 15 450 Boiler Pump X = 1.00 h(kJ/kg) s(kJ/kg-K) Quality or region for state Sat. liquid Turbine Condenser

Problem 2 - Steam Power Cycle with Reheat and Irreversibility A steam power plant operates on the reheat Rankine cycle with irreversibilities at steady-flow conditions. Steam enters the high-pressure turbine at 12.5 MPa and 550°C at a rate of 8 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 percent and 75 percent, respectively. Steam leaves the condenser as a saturated liquid at 15 kPa. Assume that the turbines are adiabatic and the changes in kinetic and potential energy are negligible. Please answer the following: a. As you solve this problem, complete the values in the table below. Assume that the pressure drops are negligible. Some of the values from the problem statement are already entered. State P (kPa) T (°C) 15 1 53.97 2 3 4 4s 5 66 12,500 550 15 6s 15 450 Boiler Pump X = 1.00 h(kJ/kg) s(kJ/kg-K) Quality or region for state Sat. liquid Turbine Condenser

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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