Separate streams of steam and air flow through the turbine and heat exchanger arrangement shown in the figure below, where ms = 1500 kg/min and W,1 = 12,000 kW,. Steady-state operating data are provided on the figure. Heat transfer with the surroundings can be neglected, as can all kinetic and potential energy effects. Wn = ? Turbine Turbine P3 = 10 bar T= ? T = 400°C P2= 10 bar T = 240°C PA =1 bar Steam, of in T = 600°C wwww Pi = 20 bar +6 Ts = 1500 K +5 ps = 1.35 bar Heat exchanger A ms VT = 1200 K P6 =1 bar Air in Determine: (a) T3, in K. (b) the power output of the second turbine, in kW.

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Separate streams of steam and air flow through the turbine and heat exchanger arrangement shown in the figure below, where m5 =
1500 kg/min and W,1 = 12,000 kW,. Steady-state operating data are provided on the figure. Heat transfer with the surroundings can
be neglected, as can all kinetic and potential energy effects.
Wn
W2 = ?
Turbine
Turbine
P3 = 10 bar
T3 = ?
T = 400°C
P2 = 10 bar
T = 240°C
P4 = 1 bar
Steam
in
T = 600°C
Pi = 20 bar
T5 = 1500 K
+5 Ps = 1.35 bar
-9-
Heat exchanger
V T = 1200 K
P6 =1 bar
Air in
Determine:
(a) T3, in K.
(b) the power output of the second turbine, in kW.
Transcribed Image Text:Separate streams of steam and air flow through the turbine and heat exchanger arrangement shown in the figure below, where m5 = 1500 kg/min and W,1 = 12,000 kW,. Steady-state operating data are provided on the figure. Heat transfer with the surroundings can be neglected, as can all kinetic and potential energy effects. Wn W2 = ? Turbine Turbine P3 = 10 bar T3 = ? T = 400°C P2 = 10 bar T = 240°C P4 = 1 bar Steam in T = 600°C Pi = 20 bar T5 = 1500 K +5 Ps = 1.35 bar -9- Heat exchanger V T = 1200 K P6 =1 bar Air in Determine: (a) T3, in K. (b) the power output of the second turbine, in kW.
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