heat transfer in an annulus
heat transfer in an annulus
(OP)
In the site ht tp://www.c heresource s.com/conv ection.sht ml#annular it refers to the nominal Nu.tube but which tube of the annulus is it referring to? The outer tube diamter Do, or the hydraulic diameter, Dh = Do-Di ?
corus





RE: heat transfer in an annulus
If you notice, the reference for the equations given is: Petukhov and Roizen. That is where you should start looking in order to find the logic and the algorithm employed to come up with the equations.
If it is argued that the presentation of the equation and it's explanation is flawed, I have to agree whole-heartedly. However, that is another forum and the only way to get a full version of what the equation represents is to go to the referenced sources.
RE: heat transfer in an annulus
RE: heat transfer in an annulus
corus