Chapter 13 Gas Turbine Power Plants
Chapter 13 Gas Turbine Power Plants
Chapter 13 Gas Turbine Power Plants
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<strong>13</strong>.12 A Brayton cycle with regeneration uses air as the working<br />
substance. At the compressor inlet p 01 = 1 atm and T 0] = 300°K,<br />
and at the turbine inlet p 03 =14 atm and T 03 = 1400°K. The mass<br />
flow rate of air is 5.5 kg/s, and compressor and turbine efficiencies<br />
are 0.85. The plant utilizes a regenerator whose effectiveness<br />
is 0.75. Assuming that y varies with average temperature in each<br />
process and using (11.5), determine the cycle efficiency and the<br />
net power developed. Compare the efficiency with that found for<br />
Problem <strong>13</strong>.11.<br />
<strong>13</strong>.<strong>13</strong> A Brayton cycle with regeneration uses air as the working<br />
substance. At the compressor inlet p 01 = 1 atm and T 01 = 300°K,<br />
and at the turbine inlet p 03 = 4 atm and T 03 = 1100°K. The mass<br />
flow rate of air is 7.3 kg/s, and compressor and turbine efficiencies<br />
are 0.85. The regenerator effectiveness is 0.8. Assuming that<br />
y varies with average temperature in each process and using<br />
(11.5), determine the cycle efficiency and the net power developed.<br />
Compare the efficiency with that found for a Brayton cycle<br />
with the same inlet and throttle conditions but without regeneration.<br />
<strong>13</strong>.14 A Brayton cycle with regeneration and a power turbine<br />
(see Figure <strong>13</strong>.6) uses air as the working substance. At the compressor<br />
inlet POI = 1 atm and T 0] - 300°K, and at the H.P. turbine<br />
inlet p 03 - 4 atm and T 03 = 1200°K. The mass flow rate of air<br />
through both turbines is 7.5 kg/s. Compressor and turbine efficiencies<br />
are 0.85, and the regenerator effectiveness is 0.7. Assuming<br />
that y varies with average temperature in each process and<br />
using (11.5), determine the cycle efficiency and the net power<br />
developed. Hint: The work of the H.P. turbine equals the compressor<br />
work.<br />
<strong>13</strong>.15 A Brayton cycle with regeneration and a power turbine<br />
(see Figure <strong>13</strong>.6) uses air as the working substance. At the compressor<br />
inlet p 01 - 1 atm and T ol = 300°K, and at the H.P. turbine
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