Geothermal steam at 172°C condenses in the shell side of a heat exchanger over the tubes through which water flows. Water “C_ = 4201 J/kg.K, k = 0.673 W/m.°C, p = 968.1 kg/m , µ = 3.33E-4 Pa.s, Pr= 2.08" enters the 4-cm-diameter, 9.5m-long tubes %3D %3D %3D

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Chapter10: Thermal Physics
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Geothermal steam at 172°C condenses in
the shell side of a heat exchanger over the
tubes through which water flows. Water
“C, = 4201 J/kg. K, k = 0.673 W/m.°C, p =
968.1 kg/m, µ = 3.33E-4 Pa.s, Pr = 2.08"
enters the 4-cm-diameter, 9.5m-long tubes
at 20°C at a rate of 0.3 kg/s. What is the
exit temperature of water “°C"? Assume
fully developed flow, if turbulent flow
099
Dittus-Boelter equation: Nu = 0.023
Re Pr.
us,8
Select one:
А. 150.71
В. 139.86
C. 143.40
D. 147.09
E. 154.18
Transcribed Image Text:Geothermal steam at 172°C condenses in the shell side of a heat exchanger over the tubes through which water flows. Water “C, = 4201 J/kg. K, k = 0.673 W/m.°C, p = 968.1 kg/m, µ = 3.33E-4 Pa.s, Pr = 2.08" enters the 4-cm-diameter, 9.5m-long tubes at 20°C at a rate of 0.3 kg/s. What is the exit temperature of water “°C"? Assume fully developed flow, if turbulent flow 099 Dittus-Boelter equation: Nu = 0.023 Re Pr. us,8 Select one: А. 150.71 В. 139.86 C. 143.40 D. 147.09 E. 154.18
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