A 10 m long stainless steel (AISI 347) pipe is delivering saturated liquid water at 140 °C. The inner and out diameter is 20cm and 22cm, respectively. Ambient air at 27 °C flows over this pipe as cross flow at 5 m/s. The convection heat transfer between internal surface and water is 200W/m^2*K. If you need the external surface temperature in finding property of air, you can assume the pipe external surface temperature is 127 °C.
(1) Find the heat transfer from water to ambient air.
(2) Find the actual external surface temperature.



A 10 m long stainless steel (AISI 347) pipe is delivering saturated liquid water at 140...
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