Heat exchanger calculations


Hydraulic diameter

The hydraulic diameter, dh, is used instead of the geometrical diameter for channels of non-circular shape.

dh is defined as:

Hydraulic diameter           

For some typical geometries dh becomes:

circular tube

dh of a circular tube
Geometries
square tube

dh of a square tube
two concentric tubes

dh of two concentric tubes


Back to heat transfer main page
Principles of a heat exchanger
Logarithmic mean temperature and theta value
 

Copyright © 2017 Rheoheat