A stationary gas-turbine power plant operates on a simple ideal Brayton cycle with air as theworking fluid. The air enters the compressor at 95 kPa and 290 K and the turbine at 760 kPa and1100 K. Heat is transferred to air at a rate of 35000 kJ/s. determine the power delivered by thisplant and the mass flow rate of air assuming constant specific heats at room temperature.

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Answered: A stationary gas-turbine power plant…

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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Steam generated at a power plant at 8.0 MPa and 600.°C is fed to a turbine. Exhaust from the turbine enters a condenser at 25 kPa where it is condensed to a saturated liquid, which is then pumped to the boiler. What is the thermal efficiency of a Rankine cycle with a reversible adiabatic turbine operating at these conditions?
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 accounting for the variation of specific heats with temperature.
Consider a simple ideal Brayton cycle with air as the working fluid. The pressure ratio of the cycle is 7.2, and the minimum and maximum temperatures are 300 K and 1350 K, respectively. Now the pressure ratio is doubled without changing the minimum and the maximum temperatures in the cycle. Assuming constant specific heats for air at room temperature; show the initial process and process change in a T-s diagram; calculate the change in the net work output per unit mass; and determine the change in thermal efficiency of the cycle.
Please solve this problem, Thank you very much
Find the entropy production and determine if the cycle operates irreverisbly, reverisbly, or impossibly. A refrigeration cycle operates between the freezer compartment at 268K and the ambient air at 295K. The rate of heat transfer from the freezer compartment is 8000 kJ/h and the power input for the cycle is 3200 kJ/h. Determine the entropy production for this cycle in kJ/K·h (do not convert h to s). Enter the answer without units, but with a minus sign if applicable. This cycle operates irreversibly reversibly impossibly.
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.
Consider a simple Brayton cycle that uses air as the working fluid to operate a gas-turbine power plant between the pressure limits of 100kPa and 900kPa. Air enters the compressor at 298K and leaves at 610K at a mass flow rate of 1200kg/min. The maximum cycle temperature is 1380K. The net power output from the cycle is measured experimentally to be 55 MW. Assuming constant properties (Cv,Cp, R, and k) for air at 300K: a) Sketch a T-s diagram for the cycle b) Determine the isentropic efficiency of the turbine c) Determine the thermal efficiency
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Please use property tables. Thank you 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. Using the property tables for both the inlet and outlet of the pump, determine the enthalpy in kJ/kg of the pump outlet. Report your answer to two decimal places using rounding. 2. Report the amount of heat added, in kJ/kg, in the boiler before the high-pressure turbine to one decimal place using rounding. 3. Report the amount of work produced in the high-pressure turbine, in kJ/kg, to one decimal place using rounding.
Q5/ For a steam power plant, the turbine operates isentropically and adiabatically with inlet steam at 6800 kPa and 550 °C and the exhaust steam enters the condenser at 50 °C. Saturated liquid water leaves the condenser, and is pumped to the boiler. Neglecting pump work and kinetic and potential energy changes, determine the thermal efficiency of the cycle?
None
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. Using the property tables for both the inlet and outlet of the pump, determine the enthalpy in kJ/kg of the pump outlet. 2. Report the amount of heat added, in kJ/kg, in the boiler before the high-pressure turbine to one decimal place using rounding. 3. Report the amount of work produced in the high-pressure turbine, in kJ/kg, to one decimal place using rounding. 4. Report the amount of heat added in the reheat process, in kJ/kg, to one decimal place using rounding. 5. Report the amount of work produced in the low-pressure turbine, in kJ/kg, to one decimal place using rounding.

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