Thanks Jones. I just ordered one of those anodes. I am also going to cross check with a graphite anode. I was using standard nickels and a thoriated tungsten rod all plated with an extra layer of nickel as a cathode. I also added a small amount of nickel sulfate to the electrolyte after approximately 24 hours of run time.
For my analysis above, I'm simply looking at the relative volume occupied by the iron oxide versus the water. If you use the equations for Q=mc(delta T), you can see that less energy is needed to cause the same amount of temperature change in iron oxide versus water. I do also think a lot of the heat was coming from oxidization throughout the run (as noted with the temperature checked on the anode vs. cathode with an IR thermometer). On Thu, Jun 13, 2013 at 8:45 PM, Jones Beene <jone...@pacbell.net> wrote: > ** ** > > *From:* Jack Cole **** > > ** ** > > This produced apparent (but false) excess heating of up to 50% in several > of my experiments. Is this analysis sensible?**** > > ** ** > > Not so sure that this analysis is precise – but apparent gain could be due > to iron as a consumable and must be eliminated. If iron is leaching, then > gain would be due as much to oxidation as a change in heat capacity (a bit > of both). **** > > ** ** > > There are ways to check. Simplest: you could use a nickel anode to > cross-check… or plate the stainless or a copper anode with nickel or Pt or > Pd. **** > > ** ** > > For an complementary anode - which may be as active as a nickel cathode - > success has been seen with what is called MMO or “mixed metal oxide” coated > titanium anodes … which are used in swimming pools and spa chlorinators and > not too dear.**** > > ** ** > > I see one on eBay now for 15 bucks.**** > > ** ** > > > http://www.ebay.com/itm/MMO-coated-expanded-titanium-mesh-anode-2-by-6-/171058056592?pt=LH_DefaultDomain_0&hash=item27d3dacd90 > **** > > ** ** > > Jones**** >
