Tech Question Max Coolant Temp.

[jkarlsso@metabolex.com (Jonas K.)]

Slightly higher, seeing that it's not pure water in there, but a mix of
Ethylene Glycol and water.

Molecular Weight of ethylene glycol (EG) is 62.07 g/mol
I don't know the density, so assuming it's close to water (1000g/l) then in
one liter of 50/50 mix you'd have 500g EG, or 8.06 moles.

Boiling point elevation for water is 0.52 degrees C per Molar solute, times
dissotiation factor (For EG this is 1), so at ATM the elevation would be

(8.06*0.52*1) = 4.2 C

Not sure how this impacts boiling at 30psi absolute, but I'd say you'd end
up at least at 145.2 C, or as high as 147 C

HTH

Jonas

BTW, last time I spit out scientific calculations, I got it backwards, let's
see if I'm right this time -crossing fingers-  :-)



On 4/8/02 12:59 PM, "Euroroc II" <flaatr@yahoo.com> wrote:

> That would be about 274F or about 141C.
> 
> Seems about right. Anyone care to comment?
> 
> -RGK-
> 
> At 07:20 AM 4/8/02 -0400, you wrote:
>> raffi,
>> i gotta get to work, but for now i can tell ya that the press. relief in
>> our coolant systems is 15
>> psi. that means you need to find out the boiling temperature of water at
>> 30 pounds absolute (from a
>> steam table). that will be the temperature you are looking for.
>> Al
>> 
>> Allyn Malventano, ETC(SS), USN
>> 87 Rieger GTO Scirocco 16v (daily driver, 170k, rocco #6)
>> 86 Kamei Twin 16V Turbo Scirocco GTX ('it has begun', rocco #7)
>> 87 Jetta 8v Wolfsburg 2dr (daily driver, 260k, 0 rattles, original clutch,
>> driveshafts, wheels :)
>> 
>> ----- Original Message -----
>> From: "EUROROC II" <flaatr@yahoo.com>
>> To: <scirocco-l@scirocco.org>
>> Sent: Monday, April 08, 2002 3:08 AM
>> Subject: Tech Question Max Coolant Temp.
>> 
>> 
>>> Anyone know how hot the radiator coolant can get in degrees C or F?
>>> What is the MAX temp it can reach?
>>> 
>>> No I don't plan on melting my motor but I do need to know this temp... or
>>> approximately the highest temp. Project #2 of 8 is back on...
>>> 
>>> Details later when it's working but for now thanks!
>>> 
>>> -Raffi
>>> 
>>> 
>>> _______________________________________________
>>> Scirocco-l mailing list
>>> Scirocco-l@scirocco.org
>>> http://neubayern.net/mailman/listinfo/scirocco-l
>> 
>> 
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