Water best at heat transfer but AFZ raises boiling point

Posted by John T on July 31, 2012 at 19:07:07 from (216.249.82.117):

In Reply to: Which runs cooler: water or antifreeze? posted by lemmond1 on July 31, 2012 at 18:45:10:

Okay, Im an electrical NOT a mechanical or thermo engineer so no warranty buttttttttt I was under the impression water has a higher coefficient of heat transfer then anti freeze, so YES water is more efficient at heat transfer so it will transfer more heat out of the liquid to the radiator (liquid to air heat exchanger) then anti freeze would.

HOWEVER I believe that anti freeze has another use/advantge in that it raises the boiling point moreso then if water alone was used and since boiling causes water vapor and steam which isnt as good of a heat conductor as water if she boils thats a baddddddddd thing THEREFORE anti freeze is superior as a coolant since it raises the boiling point

I THINK WATER IS BETTER FOR PURE HEAT TRANSFER BUT SINCE AFZ RAISES THE BOILING POINT THATS WHAT YOU (with proper 50 50 or whatever mix) need to use

Wheres a good mechanical or thermo engineer when needed lol Am I right or wrong???

John T

Replies:

• Re: Water best at heat transfer but AFZ raises boiling point John in la 19:54:00 07/31/12 (0)

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