Question: Question 5 . The combined cycle. ( 2 0 pt ) Below is a TS diagram for a combined cycle ( Brayton cycle and Rankine

Question

5 .

The combined cycle.

(20

)

Below is a TS diagram for a combined cycle

(

Brayton cycle and Rankine cycle

) .

Energy is recovered from the exhaust gases by transferring it to the steam in a heat exchanger that serves as the boiler. The temperature enters the heat exchanger at

T_{8}

and exits at

T_{9} .

Assume the heat exchanger has an efficiency of

_{h e} = 0.85 .

Determine the ratio of the mass flow rates of the steam

(m_{s}^{})

and the combustion gases

(m_{g}^{})

AND the efficiency.

(

Hint:

Q^{} = m^{} h .

Assume you know all the enthalpy values for each point

)

Question 5 . The combined cycle. ( 2 0 pt ) Below

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