I'd love to read what you have on the subject.
Paul Mele
>> and another where someone said it was a blend of R290 (which
>> I believe is
>> propane) and R600A.
>> http://www.refrigeration-engineer.com/forums/showthread.php?p=68039
>
> Sorry, forgot to mention : R600A is isobutane.
>
> If anyone is interested, I have a document with information on how to make
> a
> propane/isobutane mix at home. Apparently the biggest problem with this
> mix (other than being flammable) is that the system works so well it's apt
> to ice up on humid days. If that's a problem for you, you can increase
> the
> proportion of isobutane a bit to bring the evaporator temperature up (and
> reduce efficiency).
>
> Unfortunately I've lost the video of R12 burning brightly.
>
> Randall
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