A 12,000 MW gas turbine operating in the simple open cycle has an exhaust gas flow of 80 kg/s. The gas enters a wasteheat recovery boiler at 400°C and leaves at 130°C, specific heat of the gas is 0.85 kJ/kg - K, heat required to produce 1kg of steam at 4.5 MPa and 320°C from feedwater at 110°C is 3.5 kJ. A. Calculate the quantity of steam that can beproduced in kg/hr.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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 A 12,000 MW gas turbine operating in the simple open cycle has an exhaust gas flow of 80 kg/s. The gas enters a wasteheat recovery boiler at 400°C and leaves at 130°C, specific heat of the gas is 0.85 kJ/kg - K, heat required to produce 1kg of steam at 4.5 MPa and 320°C from feedwater at 110°C is 3.5 kJ. A. Calculate the quantity of steam that can beproduced in kg/hr.

B. If the steam produce from this waste heat recovery boiler is used to run a steam turbine-generator setwith a combined steam rate of 6.4 kg/kW-hr, what additional kW capacity can be obtained at no fuel cost?

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