"Morten" wrote in message
...

"spiral_72" wrote in message
oups.com...
Alright, I've got this idea. Boy, that sounds like the beginning to an
end.

The chemical reaction is:

NaHCO3(aq) + HCl(aq) = CO2(g) + H20(aq) + NaCL(aq) + energy


I've done a few calculations and 100g of baking powder together with 0.1447
litre of 30%HCl should give 52.39g CO2 which at room temperature / pressure
should be arround 26.65 Litre of CO2 gas which in turn should be about 2540
bubbles (based on a bubble size of 0.0952ml)

I also did some calculation on the yeast / sugar method and found that 200g
sugar gave about 48.86g CO2 or 24.87 Litre CO2 at room temperature, which is
about 2368 bubbles given the same bubble size as above...

So say that we use a standard Yeast / Sugar batch of ca. 200g sugar that
gives ca. 4700 bubbles over ca. 2 weeks. The Baking powder / Acid mix will
give approximately the same, but because the reaction is self regulating we
can make much bigger batches, ie. we could use 500g of baking powder and
0.723Litre of 30% HCl that would give 12700 Bibbles, lasting 37 days instead
of 14 days for a batch...


And of course the Baking powder / acid method can be shut off and run slow
or fast depending on need, where the yeast / sugar method cannot be
controlled easily with out venting / loosing the CO2 when not needed or
cleaning up the mess after a little mishap...


I still thinks this is a great idea, just haven't had a chance to implement
it yet.

Hmm, I wonder if B&Q are open now...



/Morten





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