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Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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
Transcribed Image Text:H.W
1- A stationary gas-turbine power plant operates on a simple ideal
Brayton cycle with air as the working fluid. The air enters the compressor
at 95 kPa and 290 K and the turbine at 760 kPa and 1100 K. Heat is
transferred to air at a rate of 35,000 kJ/s. Determine the power delivered
by this plant (a) assuming constant specific heats at room temperature
and (b) accounting for the variation of specific heats with temperature.
2- A gas-turbine power plant operates on the simple Brayton cycle with
air as the working fluid and delivers 32 MW of power. The minimum and
maximum temperatures in the cycle are 310 and 900 K, and the
pressure of air at the compressor exit is 8 times the value at the
compressor inlet. Assuming an isentropic efficiency of 80 percent for the
compressor and 86 percent for the turbine, determine the mass flow rate
of air through the cycle. Account for the variation of specific heats with
temperature.
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- Steam enters the high-pressure turbine of an ideal reheat Rankine cycle at 10 MPa and 500°C. The low-pressure turbine inlet admits steam at 1 Mpa. Assume that the pump inlet is a saturated liquid at 10 kPa and that 80 MW of power is produced overall. 1. Report the overall thermal efficiency of the cycle as a percentage (number between 0 and 100) to one decimal place using rounding. 2. Report the mass flow rate, in kg/s, to one decimal place using rounding.arrow_forwardA gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1600 kPa. The working fluid is air, which enters the compressor at 40°C at a rate of 850 m3 /min and leaves the turbine at 650°C. Assuming a compressor isentropic efficiency of 85 percent and a turbine isentropic efficiency of 88 percent, determine the net power output.arrow_forward
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