Glycol concentration and heat transfer
Glycol concentration and heat transfer
(OP)
In a closed loop cooling system designed to run at 50% Glycol/50% Water, the concentration has dropped to 30% glycol. How will this affect heat transfer capabilities. The temperature range for this fluid is approx. 60 - 120 degF.





RE: Glycol concentration and heat transfer
If you are never going below 60°F or above 120°F, why are you using glycol at all?
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Glycol concentration and heat transfer
RE: Glycol concentration and heat transfer
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Glycol concentration and heat transfer
Therefore it is best to use the lowest possible concentration of glycol in your mix to meet your freeze protection needs.
So good news! Your cooling has become more efficient! (but less freeze protection which doesnt seem to be a problem? so win win?)
Johnny H-S BSc(Hons) MInstMC
Engineers like to solve problems. If there are no problems handily available, they will create their own problems.
RE: Glycol concentration and heat transfer
RE: Glycol concentration and heat transfer
most glycols are sold together with an anti-corrosion package.
if you reduce the glycol concentration, also the concentration of the anti-corrosion additive is reduced. since the anti-corrosion additive is used up during service, this may lead to corrosion problems in the long run.
the heat transfer properties change when the concentration of the glycol changes, but in most cooling systems the capacity is deliberately overrated so this causes no problems as long as you keep the concentration at 50% or lower.