Water at 310 K and a flow rate of 5 kg/s enters a black, thin-walled tube, which passes through a large furnace whose walls and air areat a temperature of 700 K. The diameter and length of the tube are 0.25 m and 8 m, respectively. Convection coefficients associatedwith water flow through the tube and airflow over the tube are 300 W/m²-K and 50 W/m².K, respectively.-Tube, D = 0.25 mL = 8 m, & = 1AirT= 700 KWaterm = 5 kg/sImom.i-Furnace, Tur 700 K=Write an expression for the linearized radiation coefficient corresponding to radiation exchange between the outer surface of the pipeand the furnace walls. Determine how to calculate this coefficient if the surface temperature of the tube is represented by thearithmetic mean of its inlet and outlet values. Use these expressions to determine the outlet temperature of the water, Tm,o, in K.

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Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.4P

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