5 replies to this topic

[lanco]

Hi,

 

I have to design a rising film evaporator for an organic solution.

 

Could someone recommend a literature source to calculate heat transfer coefficient inside tubes?

 

Thanks in advance.

[breizh]

Hi,

For your application and sensitive products, let you consider those papers.

Breizh

Attached Files

•  evaporation of difficult products.pdf   2.5MB   17 downloads
•  agitated film evaporator.pdf   1.55MB   23 downloads

[lanco]

Thank you Breizh for the information shared.

It is not a difficult evaporation, an agitated film evaporator is not necessary, I think a climbing film evaporator is suitable.

[breizh]

Hi,

Let you try our best friend Google; I did not find much.

 

Reading my old notes (Uni time) I found a reference for vertical tubes, HSU and WESTWATER equation.

 

h=0.002 *Re^0.6*(lambdav^3*Rov*(Rol -Rov)*g/Muv^2) ^.333

with lamdav =thermal conductivity vapor, Ro density liquid and vapor ,Muv : viscosity vapor.

 

800< Re <5000

Re calculated at the exit of the pipe based on vapor stream.

 

 

As a general rule, heat transfer coefficients are within the range 100 to 250 kcal/h m2 C.

Good luck

Breizh

Attached Files

•  Evaporator_Handbook_10003_01_08_2008_US.pdf   2.43MB   15 downloads

[lanco]

Thanks again.

Edited by lanco, 26 June 2025 - 02:44 PM.

[breizh]

HI,

The last resource on hands shared with you and others.

Review Chapter 5 Wolverine to support your work. This book was downloadable from Internet years ago. 

Key words: Wolverine engineering data book 

BTW Did you try Pery's chemical engineers' handbook?

EDIT : Extract from Process Heat transfer Robert W Serth

Breizh

Attached Files

•  Process Heat Transfer. Principles, Applications and Rules of Thumb,2nd ed,2014.pdf   1.44MB   13 downloads
•  A Heat Transfer Textbook-Fifth Edition-Phlogiston Press-Cambridge-Massachusetts.pdf   28.86MB   9 downloads
•  ch5_4.pdf   56.76KB   8 downloads
•  db3ch10.pdf   275.64KB   8 downloads
•  ch5_3.pdf   440.75KB   9 downloads