From Wikipedia, the free encyclopedia
An antifreeze is a chemical additive which lowers the freezing point of a
water-based liquid. An antifreeze mixture is used to achieve freezing-point
depression for cold environments and also achieves boiling-point elevation
("anti-boil") to allow higher coolant temperature. Freezing and boiling
points are colligative properties of a solution, which depend on the
concentration of the dissolved substance.
Because water has good properties as a coolant, antifreeze is used in
internal combustion engines and other heat transfer applications, such as
HVAC chillers and solar water heaters. The purpose of antifreeze is to
prevent a rigid enclosure from undergoing catastrophic deformation due to
expansion when water turns to ice. Commercially, either the additive or the
mixture may be referred to as antifreeze. Careful selection of an antifreeze
can enable a wide temperature range in which the mixture remains in the
liquid phase, which is critical to efficient heat transfer and the proper
functioning of heat exchangers.
from what I understand, 50/50 is not the ideal mixture. more like 2/3 water
1/3 antifreeze is better.
is there a chemist on the list who can explain what effect, if any,
antifreeze has on the boiling point?
-----Original Message-----
From: John & Pat Donnelly
Sent: Saturday, September 22, 2012 8:47 PM
To: 'Triumphs'
Subject: Re: [TR] Best Anti-Rust Coolant
Just so I understand this correctly, having coolent in the water allows the
water in the cooling system to run more efficiently. So if I have proper
50/50 mix then when the gauge shows an increased temp the car is really
being stressed.
I run straight water with no problems.
Johnnie
'67 tr4a
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