Engineering :: Heat Transfer

@ : Home > Chemical Engineering > Heat Transfer

Dittus-Boelter equation NNu = 0.023 (NRe)0.8(NPr)n where n = 0.4 for heating the fluid and n = 0.3 for cooling the fluid is applicable for

[A].	10.000 < NRe < 1.2 x 105	[B].	0.7 < NPr < 120
[C].	L/D > 60	[D].	all the above

Answer: Option D