Expansion Tank - 25% Ethylene Glycol 1

[CeaserMech]

Hi,

I just joined the boards today, and am a recent graduate for mechanical engineering.

I am designing an expansion tank for a chilled water loop, and it asks for the expansion coefficient for ethylene glycol.

I cannot find a ethylene glycol expansion table anywhere. were going from 21F to 60F (25% EG)

So If anyone can point me to an EG expansino table, that would be excellent!

Steve

 

[imok2]

Try this:

http://www.engineeringtoolbox.com/ethylene-glycol-d_146.html

 

[CeaserMech]

Nope, but thanks for the link!

I used the densities from the ASHRAE 2005 Fundamentals handbook, they give the density of 20% and 30% Ethylene glycol at multiple temperatures.

I was able to acquire a sufficient calculation from the density, the only problem is I would love to verify it with a second source.

 

[BillyTanschik]

hi Dude,

attached is a pdf file with the required properties graphs for Ethylene & Propylene Glycol for all the different concentrations including the state equations ....

 

[ginsoakedboy]

Try to locate "Carrier System Design Manual". It has all the info you should need. I think the file posted by BillyTanschik quotes data from this manual.

 

[ChasBean1]

sjbayer3, not sure what you're still needing after Imok's helpful post. the 60° solution is about 99% of the volume of the 21° solution. If you have a 1,000 gallon system, you should size for at least 10 gal. acceptance.

What second source are you referring to? It's not like it's a medical opinion or something...