I need help on actual cubic feet/min Generation of steam and its utilization in

Question

I need help on actual cubic feet/min Generation of steam and its utilization in the production of electricity in this plant is typical of many power cycles. Steam is generated in the boiler and leaves the boiler and superheater tubes at 1400 °F and 2700 psia. It is expanded through a turbine where its pressure and temperature are reduced to 5 psia and 200°F The low-pressure steam is then condensed at constant pressure and pumped isothermally to the inlet boiler tubes. ii is 17079.18 ftA3/min (a) The air feed in i. lb-mole/min ii. Standard cubic feet/min iii. Actual cubic feet/min

Explanation / Answer

Answer:

the actual air feed in will depend on the efficiency of the condenser

Actual air feed = efficiency X standard air feed in

For a typical thermal power plant the efficiency of condenser in not more than 50%

Hence actual air feed = .5X 17079 = 8539.5 ft3/min

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