5. Steam is supplied at 17.5 bar and 300° C to a 5-stage turbine and exhausts at 0.04 bar. The enthalpies after actual expansion and isentropic expansion in kJ/kg are as follows: 2 2746 2700 2901 2842 3 2592 2550 4 2416 2374 5 2232 2207 Stage No. Actual expansion. Isentropic expansion If the reheat factor for the turbine is 1.04, determine the stage efficiencies and the overall efficiency.

5. Steam is supplied at 17.5 bar and 300° C to a 5-stage turbine and exhausts at 0.04 bar. The enthalpies after actual expansion and isentropic expansion in kJ/kg are as follows: 2 2746 2700 2901 2842 3 2592 2550 4 2416 2374 5 2232 2207 Stage No. Actual expansion. Isentropic expansion If the reheat factor for the turbine is 1.04, determine the stage efficiencies and the overall 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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4Air enters the compressor of a simple gas turbine at p1 = 14 lbf/in2, T1 = 520°R. The isentropic efficiencies of the compressor and turbine are 83 and 87%, respectively. The compressor pressure ratio is 12 and the temperature at the turbine inlet is 2500°R. The volumetric flow rate of the air entering the compressor is 9000 ft3/min. Use an air-standard analysis. a) Determine the net power developed, in Btu/h. b) Determine the thermal efficiency of the cycle. c) The temperatures at the compressor and turbine exits in °R. d) The temperatures at the compressor and turbine enters in °R rmine the net power developed, in Btu/h .
Brayton cicle Based on a gas turbine with superheat and intercooling, determine: 1) The thermal efficiency (ƞterm), in %. Use the expression ƞterm= 1 –(qL/ qH)2) How does gas turbine intercooling influence thermal efficiency?3) How and why? It is said that the gas turbine cycle with intercooling, reheating and regeneration is close to the Ericsson cycle.
Air enters the compressor of a simple gas turbine at p1 = 14 lbf/in2, T1 = 520°R. The isentropic efficiencies of the compressor and turbine are 83 and 87%, respectively. The compressor pressure ratio is 12 and the temperature at the turbine inlet is 2500°R. The volumetric flow rate of the air entering the compressor is 9000 ft3/min. Use an air-standard analysis. a) Determine the net power developed, in Btu/h. b) the percent thermal efficiency of the cycle.c) the back work ratio.
Figure 1 shows a regenerative gas turbine power plant. Air enters the compressor with a mass flow rate of 1 bar, 27°C and 0.562 kg/s and is compressed to 4 bar. The isentropic efficiency of the compressor is 80% and the regenerator efficiency is 90%. All the power generated from the high pressure turbine is used to run the compressor. The low pressure turbine provides net power output. The isentropic efficiency of each turbine is 87% and the temperature at the inlet of the high pressure turbine is 1200 K. a) Net power output (kW) ? b) thermal efficiency ? c) Calculate the temperature (K) of the air at states 2, 3, 5, 6 and 7. find it
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Based on a gas turbine with superheat and intercooling, determine: 1) The thermal efficiency (ƞterm), in %. Use the expression ƞterm= 1 –(qL/ qH)2) How does gas turbine intercooling influence thermal efficiency?3) How and why? It is said that the gas turbine cycle with intercooling, reheating and regeneration is close to the Ericsson cycle.
Pls. answer thank you! The following performance data were generated by a gas turbine having intercooling: LP compressor inlet conditions of 14.7 psia and 520’’R: LP compressor isentropic discharge temperature, 743.8 R. compressor isentropic efficiency. 78 percent; HP.compressor inlet temperature, S20 degree R: HP compressor isentropic discharge temperature, 743.8 R. HP compressor isentropic efficiency, 82%; turbine inlet temperature, 2000R; and turbine isentropic efficiency, 90%, Calculate the net cycle work Btu/lb.
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