ספק כח לאלקטרוליזה

תשובות לרוב השאלות אתה יכול לקחת מכאן :

Hydrogen is generated at the rate of 0.0373 gram/ampere-hour, and Oxygen is generated at the rate 0.2984 gram/ampere-hour, assuming 100% electrode efficiency. The 1:8 ratio corresponds to the H2:O weights of water. I.e., H2O will be electrolytically decomposed at the rate of (0.0373 + 0.2984) = 0.3357 grams/ampere-hour.
http://www.finishing.com/GIFS/crib.GIF

Now, for voltage needed. A table of 'The Standard emf Series' shows
O2 + 4H+ + 4 e- = 2 H2O at +1.229 Volts, and
2H+ + 2 e- = H2 at 0.000 Volts. Subtracting 2x the 2nd rzn. from the first gives
O2 + 2H2 = 2 H2O at +1.229 Volts
However, due to polarization at the electrodes, to get the reaction to go at a reasonable rate requires an overvoltage. In this case, figure an extra 0.5 V at each electrode, for a total driving voltage of -2.229 Volts.

Now for an overall rate of 1000g H2O decomposed per hour, the current required is 1000/0.3359 = 2977 amp-hours. At 2.229 Volts, the power consumed is 6636 volt-amp-hr = 6.636 Kwatt-hr

מתוך :
http://www.eng-tips.com/viewthread.cfm?qid=43898

ספק כח לאלקטרוליזה - שאלה