Q3. The steam at 215 bar and 500 °C is supplied to a steam turbine. It expands to 40 bar and 280 °C. It is then reheated to 490 °C and expands to 8 bar and 270 °C. The steam coming out from the second expansion of the turbine is further reheated to 490 °C and expands to condenser pressure of 0.07 bar. The steam entering into the condenser is dry saturated. Assuming the pressure losses in first heater of 1 bar and in second heater 0.5 bar, find (a) the thermal efficiency and power developed if the flow of steam is 10 kg/s (b) the isentropic efficiency of the expansion stages. Neglect the pump work. Mis (42.8 % 1738 kA/ 70 COC
Q3. The steam at 215 bar and 500 °C is supplied to a steam turbine. It expands to 40 bar and 280 °C. It is then reheated to 490 °C and expands to 8 bar and 270 °C. The steam coming out from the second expansion of the turbine is further reheated to 490 °C and expands to condenser pressure of 0.07 bar. The steam entering into the condenser is dry saturated. Assuming the pressure losses in first heater of 1 bar and in second heater 0.5 bar, find (a) the thermal efficiency and power developed if the flow of steam is 10 kg/s (b) the isentropic efficiency of the expansion stages. Neglect the pump work. Mis (42.8 % 1738 kA/ 70 COC
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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Transcribed Image Text:1d.J70, 1574.3 KJ/Kg).
Q3. The steam at 215 bar and 500 °C is supplied to a steam turbine. It expands to 40
bar and 280 °c. It is then reheated to 490 °C and expands to 8 bar and 270 °C. The
steam coming out from the second expansion of the turbine is further reheated to 490
°C and expands to condenser pressure of 0.07 bar. The steam entering into the
condenser is dry saturated. Assuming the pressure losses in first heater of 1 bar and in
second heater 0.5 bar, find (a) the thermal efficiency and power developed if the flow
of steam is 10 kg/s (b) the isentropic efficiency of the expansion stages. Neglect the
(42.8 %, 1738 kW,78.5%,95.4 %, 87%)
pump work.
Mis-n-n
04. The steam .
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