RE: Cheap Hydrogen & D2O Electrolysis

[Frederick Sparber]

Hmmm, if the resistivity of pure H2O or D2O is 10^7 ohm-cm at STP , then

three orders of magnitude increase in the  ion product constant would drop the

resistivity to 10^4 ohm-cm at the critical temperature (374 C  or 705 F) and pressure (220 Bar or 3,300 PSI).

 

Since resistivity rho = Resistance* Length/Area  or R = rho* L/A  a small diameter concentric Pd -Silver

electrolyzer cell with 0.01cm spacing (~0..004")  ( L )  and an area ( A ) of  100 cm^2 should

have a resistance R = 10^4 * 0.01/100 =  1.0 ohms.

 

Voltage V = 2.5 volts,

 

Power W =  V^2/R  =  2.5^2/1.0  =  6.25 watts

 

Current  I = 6.25 amperes.

 

High Pressure Hydrogen (~3,300 psi out of the electrolysis cell).

 

Small grease gun from WalMart (~$10.00) and a grease fitting/check valve from Pep-Boys

to feed in the make-up H2O or D2O.

 

Will it go OU on D2O?

 

FJS

----- Original Message -----

From: Frederick Sparber

To: vortex-l

Sent: 10/25/05 12:42:36 PM

Subject: Cheap Hydrogen

I think concentric tube electrolysis of  pure water at it's critical temperature and pressure would

give high pressure Hydrogen (small diameter Palladium inner-tube Cathode silver outer tube)

much more efficiently than Ronny Bar-Gadda's wishful thinking. 

 

IOW, diffusion separation.

 

" SCW exhibits properties also characteristic of other SCFs; these include high solvating

power, compressibility and favourable mass transport ability (Section 3.1.). In general,

organic compounds and gases are soluble in SCW, while inorganic compounds such as

salts are insoluble."

"The ion product, or dissociation constant (Kw), for water is about three orders of

magnitude higher in the vicinity of the critical point of water than it is at STP.

Consequently, higher H+ and OH- ion concentrations can be achieved there than at STP.

Near the critical point, the dissociation of water itself generates high H+ ion concentration

and some acid-catalysed reactions may occur without any acid added. However, when the

critical point is exceeded, Kw decreases rapidly. For example, Kw is about nine orders of

magnitude lower at 600°C and 250 atm than it is at STP."

FJS