water, energy...

[James Knott]

John McGregor wrote:
>> Does anyone on the list know if there is any substance, preferably 
>> liquid, that holds heat energy more readily and has a higher capacity 
>> for heat storage than good ole H20? 
> 
> 
> 
> Yes, Glycol. It is the liquid of choice for heat exchangers.

But doesn't it depend on the quantity of glycol vs water?  As I recall, 
the optimum mix for heat capacity is somewhere around 50% and best 
freezing resistance about 60% glycol.  I don't think straight glycol is 
as good as a mix with water.
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