2. A steam power plant operates on the Rankine cycle with reheat. Steam enters the high pressure turbine at 12.5 MPa and 550°C at a rate of 7.7 kg/s and leaves at 2 MPa. The steam is then reheated at constant pressure to 450°C before expanding in the low pressure turbine. The isentropic efficiencies of the turbine and pump are 85 percent and 90 percent, respectively. The steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the turbine exit is not to exceed 5 percent and the maximum efficiency of the cycle is to be 37%, determine: a) the condenser pressure and b) the net power output. c) Draw the T-s graph of the complete system and the diagram with all the components and processes of both cycles, indicate all the states in both cases (1, 2, 3….)
2. A steam power plant operates on the Rankine cycle with reheat. Steam enters the high pressure turbine at 12.5 MPa and 550°C at a rate of 7.7 kg/s and leaves at 2 MPa. The steam is then reheated at constant pressure to 450°C before expanding in the low pressure turbine. The isentropic efficiencies of the turbine and pump are 85 percent and 90 percent, respectively. The steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the turbine exit is not to exceed 5 percent and the maximum efficiency of the cycle is to be 37%, determine: a) the condenser pressure and b) the net power output. c) Draw the T-s graph of the complete system and the diagram with all the components and processes of both cycles, indicate all the states in both cases (1, 2, 3….)
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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2. A steam power plant operates on the Rankine cycle with reheat. Steam enters the high pressure turbine at 12.5 MPa and 550°C at a rate of 7.7 kg/s and leaves at 2 MPa.
The steam is then reheated at constant pressure to 450°C before expanding in the low pressure turbine. The isentropic efficiencies of the turbine and pump are 85 percent and 90 percent, respectively. The steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the turbine exit is not to exceed 5 percent and the maximum efficiency of the cycle is to be 37%, determine:
a) the condenser pressure and
b) the net power output.
c) Draw the T-s graph of the complete system and the diagram with all the components and processes of both cycles, indicate all the states in both cases (1, 2, 3….)
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