A steam power plant operates on the reheat Rankine cycle. Steam enters the high-pressure turbine at 12.5 MPa and 550C at a rate of 7.7 kg/s and leaves at 2 MPa. Steam is then reheated at constant pressure to 450C before it expands in the low-pressure turbine. The isentropic efficiencies of the turbine and the pump are 85 percent and 90 percent, respectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the exit of the turbine is not to exceed 5 percent, determine (a) the condenser pressure, (b) the net power output, and (c) the thermal efficiency.
A steam power plant operates on the reheat Rankine cycle. Steam enters the high-pressure turbine at 12.5 MPa and 550C at a rate of 7.7 kg/s and leaves at 2 MPa. Steam is then reheated at constant pressure to 450C before it expands in the low-pressure turbine. The isentropic efficiencies of the turbine and the pump are 85 percent and 90 percent, respectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the exit of the turbine is not to exceed 5 percent, determine (a) the condenser pressure, (b) the net power output, and (c) the thermal efficiency.
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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A steam power plant operates on the reheat Rankine
cycle. Steam enters the high-pressure turbine at 12.5 MPa
and 550C at a rate of 7.7 kg/s and leaves at 2 MPa. Steam is
then reheated at constant pressure to 450C before it expands
in the low-pressure turbine. The isentropic efficiencies of
the turbine and the pump are 85 percent and 90 percent,
respectively. Steam leaves the condenser as a saturated liquid.
If the moisture content of the steam at the exit of the turbine is
not to exceed 5 percent, determine (a) the condenser pressure,
(b) the net power output, and (c) the thermal efficiency.
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