Propylene Glycol 2

[sensiblesteve]

I am working on a thermal project [experimental] in which 100% [PG] will be used as my transfer fluid and I am having trouble sourcing valid thermal properties at various temps.
The application of this unit will cover a very broad temp. range [233K to 373K].
I was hoping someone could help to point me in the right direction.
Thanks

 

[speco]

Steve,

Dow chemical makes quite a few varieties of both propylene and ethylene glycol. You can find most properties on their website.

By the way, pure glycol does not make a very good heat transfer fluid because:

1. Vicsosity is high

2. Thermal Conductivity is low

3. Specific heat is low

Glycols work much better when mixed with water.

Regards,

speco (

http://www.stoneprocess.com)

 

[IRstuff]

see:

http://www.dow.com/heattrans/tech/data.htm

-40ºC is pretty low for PG; its viscosity is pretty mushy at that temperature.

TTFN

FAQ731-376

 

[sensiblesteve]

Thank you very much!
I'm reviewing the tables right now and see what you mean, now that I have the info.[re: mixtures]
This is just what I needed.
Thank's

 

[IRstuff]

You should also determine material compatibility with glycol-based HTFs:

http://www.dow.com/heattrans/fsa/system.htm

TTFN

FAQ731-376

 

[IRstuff]

Whatever corrosive properties of PG there are, they pale in comparison to stomach acid, so that's not necessarily an indicator for not having inhibtors.


TTFN

FAQ731-376