At 03:17 PM 10/9/03 -0700, Gary wrote: > Only reason not to use full strength is >that it's heat capacity is lower and boiling point is >lower. Alcohol freezes at a much lower temperature >than water. Ethylene gycol is an alcohol. Water >absorbs more heat per gram than alcohol but it freezes >at 0 centigrade. Take a cup of antifreeze and put it >in your freezer. Maybe at minus 70 you will see >ethylene glycol freeze.
Perhaps "freeze" isn't the best word, even though the manufacturers themselves use it, but the chart here <http://www.gi.alaska.edu/ScienceForum/ASF6/680.html> is a fairly good visual of the temperature:mixture ratio at the point where the ethylene glycol will not have the proper flow characteristics that it has in it's liquid form. |
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