Quote:
Originally Posted by BenG
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Thanks for the link, but I'm not sure that I agree with their findings. At one point, the FDA stated that Vitamin A was not needed by the human body, and
had the proofs to support their claim. We now realize that they were quite wrong, and they now tell us their figures for RDA is what we should follow.
Based on the times and results in that test, it appears that alcohol would last longer than plain water heated for the same period of time, yet goes on to say that it boils off at 78c when water boils off at 100c,
significantly earlier than water. Bring the liquid to a boil but the alcohol doesn't evaporate, even with a lower boiling point? Something is not right! The alcohol would begin to boil/evaporate out before the liquid even reach 100c.
Try it yourself. Take a dish with 'pure' alcohol and light it. It will burn until there is nothing left in the dish, although slowly as only the surface layer is getting hot enough to burn and evaporate. Add some control to the burn and you have an alcohol stove, the controls limiting the amount of alcohol coming in contact with the flame, heating it to its boiling point. Very different from having a heat source below a pan and the surrounding liquid at 100c. A half cup of alcohol will burn away quickly when put over the fire on a stove. After an hour, there will
NOT be 25% of it left in the pan as the chart suggests. The pan will be empty.
Stitchawl