overall heat transfer coefficient 1

[process8design]

where can I find the typical heat transfer coefficient for air coolers? Thanks.

 

[pmover]

you will need to be a little bit more specific: fins or no fins, forced draft or natural draft, etc.

suggest you start at:
1) GPSA data book,
2) manufacturer's, (Hammco, SmithCo - both located in Tulsa), and you may likely need to provide them process conditions.
-pmover

 

[process8design]

Thanks a lot, pmover.

 

[quark]

Check this link for rough estimation

http://www.cheresources.com/uexchangers.shtml

and this link for U values for refining application.

http://www.processassociates.com/process/heat/uvalues1.htm

Regards,