FUND OF ENG THERMODYN(LLF)+WILEYPLUS
9th Edition
ISBN: 9781119391777
Author: MORAN
Publisher: WILEY
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Chapter 4, Problem 4.76P
i.
To determine
Temperature of steam after heat exchanger
ii.
To determine
The power output by the second turbine (in kW).
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4.105 Separate streams of steam and air flow through the tur-
bine and heat exchanger arrangement shown in Fig. P4.105.
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. Determine (a) T3, in K,
and (b) the power output of the second turbine, in kW.
W 10,000 kW
WE2 ?
Turbine
Turbine
P3= 10 bar
T3 = ?
T2= 400°C
Pz= 10 bar
T 240°C
P4=1 bar
Steam
www
www
in
1.
4.
T = 600°C
P=20 bar
Ts 1500 K
5 Ps 1.35 bar
m= 1500 kg/min
Heat exchanger
VT= 1200 K
P6=1 bar
Air in
4.105 Separate streams of steam and air flow through the tur-
bine and heat exchanger arrangement shown in Fig. P4.105.
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. Determine (a) T3, in K,
and (b) the power output of the second turbinc, in kW.
W 10,000 kW
W =
Turbine
Turbine
P3 = 10 bar
T3= ?
T= 400°C
P2= 10 bar
T=240°C
P4 =1 bar
Steam
in
ww
www
4.
T = 600°C
P= 20 bar
Ts= 1500 K
5 Ps=1.35 bar
m = 1500 kg/min
+6
Heat exchanger
VT= 1200 K
P6=1 bar
Air in
Fig 4.105
solve the following problem:
Steam enters a turbine operating at steady state at 850oF and 450 lbf/in2 and leaves as a saturated vapor at 1.4 lbf/in2. The turbine develops 12,000 hp, and heat transfer from the turbine to the surroundings occurs at a rate of 2 x 106 Btu/h. Neglect kinetic and potential energy changes from inlet to exit. Determine the exit temperature, in oF, and the volumetric flow rate of the steam at the inlet, in ft3/s.
Chapter 4 Solutions
FUND OF ENG THERMODYN(LLF)+WILEYPLUS
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