2. An air-standard regenerative Brayton cycle operates at steady state and produces 10 MW of power. Given the pressures and temperatures at the various states in Table 1 below, determine: (d) the thermal efficiency (%) of the cycle. (e) Sketch the cycle on a T-s diagram, showing all states and processes. Assume the compressor and turbine isentropic efficiencies are both 80% and that the regenerator effectiveness is 70%.
2. An air-standard regenerative Brayton cycle operates at steady state and produces 10 MW of power. Given the pressures and temperatures at the various states in Table 1 below, determine: (d) the thermal efficiency (%) of the cycle. (e) Sketch the cycle on a T-s diagram, showing all states and processes. Assume the compressor and turbine isentropic efficiencies are both 80% and that the regenerator effectiveness is 70%.
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2. An air-standard regenerative Brayton cycle operates at steady state and produces 10 MW of power. Given the pressures and temperatures at the various states in Table 1 below, determine: (d) the thermal efficiency (%) of the cycle. (e) Sketch the cycle on a T-s diagram, showing all states and processes. Assume the compressor and turbine isentropic efficiencies are both 80% and that the regenerator effectiveness is 70%.
Transcribed Image Text:State
1
2s
2
X
3
4s
4
Y
Table 1: Properties Given for Problem 2
P (kPa)
T(K)
300
100
1200
603.5
1200
Do Not Calculate
1200
Do Not Calculate
1200
1450
100
780.7
100
Do Not Calculate
100
Do Not Calculate
Regenerator
timmt
Imm
Lin
To have
Combustor
tem H
Assumi
2
Compressor
Turbine
cycle
Figure 1.- Schematic of Brayton Cycle for Problem ?
W
h (kJ/kg)
300.19
610.65
h₂ = ?
hx = ?
1575.57
800.78
h4 = ?
hy = ?
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