5 replies to this topic

[breizh]

The method should be the same than for a Shell and tube HX , error and trial .

Viscosity correction factor
The viscosity correction factor will normally only be significant for viscous liquids.
To apply the correction an estimate of the wall temperature is needed. This can be
made by first calculating the coefficient without the correction and using the following
relationship to estimate the wall temperature:
hitw
t D UT
t 12.16
where t D tube-side bulk temperature (mean),
tw D estimated wall temperature,
T D shell-side bulk temperature (mean).
Usually an approximate estimate of the wall temperature is sufficient, but trial-and-error

Hope this helps

Breizh

[breizh]

Hi Stuman
Here is the calculation based on the previous post .


Hope this helps .
Breizh

[breizh]

Hi Stu ,
I found an example in the attached link :
http://www.heattrans...Plate_Calc.html

The methodology applied to your example gave results not far from what you got from your software:


Hope it helps

Breizh

Edited by breizh, 14 July 2011 - 12:37 AM.