Heat Transfer Questions & Answers  


Right, both answers for A8Q1 were not for this problem. I fixed them: check again.




The friction factor mentioned in the “hint” is valid for both laminar or turbulent flows.




For a gas, you don't need to assume constant density but you need to assume negligible kinetic energy change. I think I mentioned this in class..




Yes, this sounds correct.




I don't understand what you write. What is $L_u$ and $L_t$? How do you calculate this? You need to define these new terms and explain how you got them.




You're on the right track!



$\pi$ 