2.15). An auxiliary gas turbine uses a single-shaft configuration with air bled from the compressor discharge for workshop services. The unit must provide 1.5 kg/s bleed air and a shaft power of 200 kW. Calculate (a) the total compressor air mass flow and (b) the power available with no bleed flow, assuming the following: Combustion Compressor pressure ratio 3.80 chamber Turbine inlet temperature 1050K 3 Compressor isentropic efficiency, nc 0.85 Gen. Turbine isentropic efficiency, Ne 0.88 Compressor Turbine Mech. transmission efficiency, nmt 0.99 Mechanical drive efficiency, Nmd 0.98 Combustion Pressure losses, App 0.12 bar Ambient conditions,pa, Ta 1 bar, 288 K [4.78 kg/s, 633 kW] 2.16). Using the data from problem 2.15 and assuming a reheat pressure of 13 bar, evaluate the power and thermal efficiency for reheat temperatures of 1525, 1425 and 1325 K. Would this be a good strategy for part-load operation? [240, 214.6, 189.2 MW, efficiency almost constant]

2.15). An auxiliary gas turbine uses a single-shaft configuration with air bled from the compressor discharge for workshop services. The unit must provide 1.5 kg/s bleed air and a shaft power of 200 kW. Calculate (a) the total compressor air mass flow and (b) the power available with no bleed flow, assuming the following: Combustion Compressor pressure ratio 3.80 chamber Turbine inlet temperature 1050K 3 Compressor isentropic efficiency, nc 0.85 Gen. Turbine isentropic efficiency, Ne 0.88 Compressor Turbine Mech. transmission efficiency, nmt 0.99 Mechanical drive efficiency, Nmd 0.98 Combustion Pressure losses, App 0.12 bar Ambient conditions,pa, Ta 1 bar, 288 K [4.78 kg/s, 633 kW] 2.16). Using the data from problem 2.15 and assuming a reheat pressure of 13 bar, evaluate the power and thermal efficiency for reheat temperatures of 1525, 1425 and 1325 K. Would this be a good strategy for part-load operation? [240, 214.6, 189.2 MW, efficiency almost constant]

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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