In Combined power plant, the gas-turbine cycle has two stages of compression, with an intercooler between the stages. Air enters the first stage at 102 kl'a, 27 °C. The pressure ratio across each compressor stage is 4.7, and each stage has an isentropic efficiency of 82%. Air exits the intercooler at 70 °C. The maximum cycle temperature is 1400 °C, and the gas cycle has a single-turhine stage with an isentropic efficiency of 84%. The exhanst is rejected at 300°C. While the steam power plant operates on the reheat-regenerative Rankine cycle with a closed feed-water heater. A 20 kg/s of steam enters the high-pressure turbine. Assuming that the isentropic efficiency of 85 percent for the pumps. Hints hu=his Find the specific works, specific input and ejected heat, the thermal efficiency of combined power plant and the air mass flow rate stale 10 11 12 13 14 15 16 17 18 82 550 2 0.8 P MPa T 0.015 °C 500 12 High P turbine Low-P Boiler turbine 13 16 1-y 14 11 Mixng Cosed 15 FWH chanber 17 Conkner 18 10 PI Cooe 2 Comprer 1 Crpreer2 lutne DO 3.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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In Combined power plant , the gas-turbine cycle has two stages of compression, with an
intercooler between the stages. Air enters the first stage at 102 kla, 27 °C. The pressure
ratio across each compressor stage is 4.7, and each stage has an isentropic efficiency of
82%. Air exits the intercooler at 70 °C. The maximum cycle temperature is 1400 °C, and
the gas cycle has a single-turbine stage with an isentropic efficiency of 84%. The exhaust is
rejected at 300°C.
While the steam power plant operates on the rcheat-regenerative Rankinc cycle with a
closed feed-water heater. A 20 kg/s of steam enters the high-pressure turbine. Assuming
that the isentropic efficiency of 85 percent for the pumps. Hints h1=his
Find the specific works, specific input and ejected heat, the thermal efficiency of
combined power plant and the air mass flow rate
state
10
11
12
13
14
15
16
17
18
P MPa
2
0.8
0.015
T
°C
550
500
12
7
High-P
lurbine
Low-P
turbine
Boiler
13
16
1-y
14
11 Mixing
Closed
15 Y
chamber
17
FWH
Condenser
18
10
PII
PI
1
Cooe
9.
2.
5
Compresser 1
Crpreser 2
lưtne
DO
9,
3.
Transcribed Image Text:In Combined power plant , the gas-turbine cycle has two stages of compression, with an intercooler between the stages. Air enters the first stage at 102 kla, 27 °C. The pressure ratio across each compressor stage is 4.7, and each stage has an isentropic efficiency of 82%. Air exits the intercooler at 70 °C. The maximum cycle temperature is 1400 °C, and the gas cycle has a single-turbine stage with an isentropic efficiency of 84%. The exhaust is rejected at 300°C. While the steam power plant operates on the rcheat-regenerative Rankinc cycle with a closed feed-water heater. A 20 kg/s of steam enters the high-pressure turbine. Assuming that the isentropic efficiency of 85 percent for the pumps. Hints h1=his Find the specific works, specific input and ejected heat, the thermal efficiency of combined power plant and the air mass flow rate state 10 11 12 13 14 15 16 17 18 P MPa 2 0.8 0.015 T °C 550 500 12 7 High-P lurbine Low-P turbine Boiler 13 16 1-y 14 11 Mixing Closed 15 Y chamber 17 FWH Condenser 18 10 PII PI 1 Cooe 9. 2. 5 Compresser 1 Crpreser 2 lưtne DO 9, 3.
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