Pressure ratio of a Brayton cycle with air operated regenerator 8. The lowest and highest temperatures...
Pressure ratio of a Brayton cycle with air operated regenerator 8. The lowest and highest temperatures of the cycle are 310 K and 1150 K. Adiabatic efficiency of compressor and turbine 75% and 82%, respectively. the efficiency of the regenerator is 65%. The cycle in the T-s diagram Show. Consider the variation of specific temperatures with temperature. a) the temperature of the air at the turbine outlet, b) Net work of the cycle, c) Calculate the thermal efficiency of the cycle.
Homework Answers
![Answer: Given data: - ¥ Temperature Ti = 310K * Temperature 1* = 1150 K of Turbine Efficiency fre] - 82% 82 -0.82 too * Compr](http://img.homeworklib.com/questions/fe70df60-a49d-11ec-857e-7bc3a32406be.png?x-oss-process=image/resize,w_560)
![from the air property table. [CP) = 1,023 kJ/xgK] # Specific heat in turbine at mean qemperature: - Tm= T4 + T5 2 1150 + 727:](http://img.homeworklib.com/questions/ffb4e130-a49d-11ec-b8b9-ffa526a36043.png?x-oss-process=image/resize,w_560)
![44 c] Calculate the thermal efficiency of the cycle. * Specific heat in regenera At mean temperature: - tor: Tm = 3+T4 2 698.](http://img.homeworklib.com/questions/0059dca0-a49e-11ec-baf4-cb5625fe9640.png?x-oss-process=image/resize,w_560)
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Pressure ratio of a Brayton cycle with air operated
regenerator 8. The lowest and highest temperatures...
1. A regenerative Brayton cycle operates over a pressure ratio of 8. The minimum and maximum...
1. A regenerative Brayton cycle operates over a pressure ratio of 8. The minimum and maximum temperatures in the cycle are 310 K and 1150 K, respectively. Assume an isentropic compressor efficiency of 75%, an isentropic turbine efficiency of 82%, and a regenerator effectiveness of 0.65. Using constant properties (Cp - 1.005 kJ/kgK, k = 1.4), determine: a) The T-s diagram for all processes including the isentropic processes b) The air temperature at the turbine exit c) The specific network...
Help Save & Exit Submit Required information A Brayton cycle with regeneration using air as the...
Help Save & Exit Submit Required information A Brayton cycle with regeneration using air as the working fluid has minimum and maximum temperatures in the cycle are 310 and 1150 K. Assume an isentropic efficiency of 75 percent for the compressor and 82 percent for the turbine and an effectiveness of 68 percent for the regenerator. Use variable specific heats for air a pressure ratio of 7. The Determine the air temperature at the turbine exit. (You must provide an...
An air-standard Brayton cycle includes a regenerator which is shown in the below figure. The air...
An air-standard Brayton cycle includes a regenerator which is shown in the below figure. The air enters the compressor at 100 kPa, 20℃. The pressure ratio across the compressor is 9:1. The highest temperature in the cycle is 1100℃, and the flow rate of the air is 10 kg/s. The regenerator operates at effectiveness 80 percent. Both the efficiencies of the turbine and the compressor are 85%. Do not use Table A-22. Assuming constant specific heat ( cp = 1.004...
Problem 1 A Brayton-cycle power plant takes in air at 100 kPa and 26.7°C. Compression in two stag...
please solve by exact analysis
Problem 1 A Brayton-cycle power plant takes in air at 100 kPa and 26.7°C. Compression in two stages with intercooling, and each stage has a pressure ratio of 2.38 and an efficiency of 84%, with intercooling to 26.7°C The maximum temperature of the cycle is 676.7°C Turbine efficiency is 82%. The turbine and compressor are assumed adiabatic. A regenerator heats the compressed air to 326.7°C before sending it to the combustor. Calculate (a) the back...
thermodynamic question.please just solve 9-84 9-82 A simple Brayton cycle using air as the working fluid has a pressure ratio of 10. The minimum c and maximum temperatures in the cycle are 295 an...
thermodynamic question.please just solve 9-84
9-82 A simple Brayton cycle using air as the working fluid has a pressure ratio of 10. The minimum c and maximum temperatures in the cycle are 295 and 1240 K. Assuming an isentropic efficiency of 83 percent for the com pressor and 87 percent for the turbine, determine (a) the air temperature at the turbine exit, (b) the net work output, and (c) the thermal efficiency. 9-84 Repeat Prob. 9-82 using constant specific heats...
A brayton cycle with regeneration and intercooling has a pressure ratio of 4 across each compressor...
A brayton cycle with regeneration and intercooling has a
pressure ratio of 4 across each compressor while the total pressure
ratio across the turbine is 16. Air enters each compressor at 298K
while the inlet gas temperature to the turbine is 1200K. If the
regenerator effectiveness is 100%, calculate the cycle thermal
efficiency from the heat addition and rejection.
3. A Brayton cycle with regeneration and intercolinig aeross the turbine is across each compressor while the total pressure ratio across...
Air enters the compressor of a cold air-standard Brayton cycle with regeneration at 100 kPa, 300...
Air enters the compressor of a cold air-standard Brayton cycle with regeneration at 100 kPa, 300 K, with a volume flow rate of 5 m3/s. The compressor pressure ratio is 8, and the turbine inlet temperature is 1400 K. The turbine and compressor each have isentropic efficiencies of 80% and the regenerator effectiveness is 80%. For the air, k = 1.4 and the ambient temperature is T0 = 300 K. -Determine the thermal efficiency of the cycle. -determine the back...
A simple ideal Brayton cycle operates with air with minimum and maximum temperatures of 27°C and...
A simple ideal Brayton cycle operates with air with minimum and
maximum temperatures of 27°C and 727°C. It is designed so that the
maximum cycle pressure is 2000 kPa and the minimum cycle pressure
is 100 kPa. The isentropic efficiency of the turbine is 96 percent.
Determine the net work produced per unit mass of air each time this
cycle is executed and the cycle’s thermal efficiency. Use constant
specific heats at room temperature. The properties of air at room...
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of...
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of 100 m3/s at 0.8 bar, 280 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 2100 K. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. For a regenerator effectiveness of 86%, determine: (a) the net power developed, in MW. (b) the rate of heat addition in the combustor, in MW. (c)...
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of...
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of 20 m3/s at 0.8 bar, 280 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 1950 K. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. For a regenerator effectiveness of 86%, determine: (a) the net power developed, in MW. (b) the rate of heat addition in the combustor, in MW. (c)...
1. A regenerative Brayton cycle operates over a pressure ratio of 8. The minimum and maximum temperatures in the cycle are 310 K and 1150 K, respectively. Assume an isentropic compressor efficiency of 75%, an isentropic turbine efficiency of 82%, and a regenerator effectiveness of 0.65. Using constant properties (Cp - 1.005 kJ/kgK, k = 1.4), determine: a) The T-s diagram for all processes including the isentropic processes b) The air temperature at the turbine exit c) The specific network...
Help Save & Exit Submit Required information A Brayton cycle with regeneration using air as the working fluid has minimum and maximum temperatures in the cycle are 310 and 1150 K. Assume an isentropic efficiency of 75 percent for the compressor and 82 percent for the turbine and an effectiveness of 68 percent for the regenerator. Use variable specific heats for air a pressure ratio of 7. The Determine the air temperature at the turbine exit. (You must provide an...
please solve by exact analysis
Problem 1 A Brayton-cycle power plant takes in air at 100 kPa and 26.7°C. Compression in two stages with intercooling, and each stage has a pressure ratio of 2.38 and an efficiency of 84%, with intercooling to 26.7°C The maximum temperature of the cycle is 676.7°C Turbine efficiency is 82%. The turbine and compressor are assumed adiabatic. A regenerator heats the compressed air to 326.7°C before sending it to the combustor. Calculate (a) the back...
thermodynamic question.please just solve 9-84
9-82 A simple Brayton cycle using air as the working fluid has a pressure ratio of 10. The minimum c and maximum temperatures in the cycle are 295 and 1240 K. Assuming an isentropic efficiency of 83 percent for the com pressor and 87 percent for the turbine, determine (a) the air temperature at the turbine exit, (b) the net work output, and (c) the thermal efficiency. 9-84 Repeat Prob. 9-82 using constant specific heats...
A brayton cycle with regeneration and intercooling has a
pressure ratio of 4 across each compressor while the total pressure
ratio across the turbine is 16. Air enters each compressor at 298K
while the inlet gas temperature to the turbine is 1200K. If the
regenerator effectiveness is 100%, calculate the cycle thermal
efficiency from the heat addition and rejection.
3. A Brayton cycle with regeneration and intercolinig aeross the turbine is across each compressor while the total pressure ratio across...
A simple ideal Brayton cycle operates with air with minimum and
maximum temperatures of 27°C and 727°C. It is designed so that the
maximum cycle pressure is 2000 kPa and the minimum cycle pressure
is 100 kPa. The isentropic efficiency of the turbine is 96 percent.
Determine the net work produced per unit mass of air each time this
cycle is executed and the cycle’s thermal efficiency. Use constant
specific heats at room temperature. The properties of air at room...
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of 20 m3/s at 0.8 bar, 280 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 1950 K. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. For a regenerator effectiveness of 86%, determine: (a) the net power developed, in MW. (b) the rate of heat addition in the combustor, in MW. (c)...
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