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Old 06-02-2008, 11:14 AM   #1
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cold weather and hho generator

I have been researching the HHO generators. I have not found information on what to do with sub-freezing temperatures. Does anyone have any experience with the generator and cold temps?
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Old 06-02-2008, 11:29 AM   #2
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With a sodium hydroxide solution, which is what baking soda becomes, in low concentrations 1-20% or thereabouts, the freezing point drops to below -20C... but it clibs rapidly back above 0C at 30% concentration by weight. Therefore the concentration should be carefully maintained at 20% or a little lower for best freeze resistance.

See...

http://www.dow.com/webapps/lit/litor...7.pdf&pdf=true
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Old 06-02-2008, 01:02 PM   #3
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I have done some work on that here:
http://flapdoodledinghy.com/HHO_control.html

In a home freezer at -5F I found that the cells do not hard freeze, but rather become sort of a slush. I did not break the glass jars. You can add a little ethyl or iso alcohol, but avoid ethylene glycol
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