Given, T1=600C, constant temperature of wall 800 , length of wit exchanger L=3m

Given, T1=600C, constant temperature of wall 800 , length of
wit exchanger L=3m, dia=25 mm, Cp=14.91 KJ/kg.K, density
ρ=914 kg/m3,mean velocity vm= 2 m/s, film heat transfer
coefficient hf=72 Kcal/h.m2.K, what is the outlet temperature?

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