Tube side heat transfer coefficient for natural gas 2

[roaleng]

The question is very simple.
I need a rough approach for sizing S&T gas cooler having the main following characteristics:

- natural gas flowing inside tube at approx pressure of 100 bar
- 3/4" OD x 14 BWG SS316 tubes
- cooling water outside tube thru baffles
- gas temperature from 130°C to 40°C

Information required are as a minimum:
- gas velocity thru tube
- tube side heat transfer coefficient or overall heat transfer coefficient

Thanks in advance

Roal

 

[IRstuff]

Is this for school? It's your system, why don't you know the gas velocity?

TTFN
faq731-376

 

[TD2K]

The GPSA engineering data book and Perry's Chemical Engineering handbook has typical overall heat transfer coefficients for varying services, I'm pretty sure your example is one of them.

Sorry, I don't have my copies right at hand now.

 

[BigInch]

Within typical required sensitivities and errors from other sources, you can use the heat transfer coefficient for carbon steel without any appreciable effects. Evaluate the film coefficients as usual.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek

 

[TD2K]

My copy of the GPSA for 1000 psia gas against water has a typical overall Uo of 80 to 100 BTU/hr/ft2/F