Glow discharge in light water with W electrodes by T. Mizuno

Calculation for a heat balance is simple. Input power is only from electric power source. Out put is divided to several parts. The first is heat of water decomposition. It is easily calculates from the total electric current. Second is electrolyte enthalpy. It is also very easy to calculate from solution temperature difference. The Third is heat bring by coolant. It is also easy to measure from the temperature difference between coolant in and out. The forth is heat release from the cell. This is rather complicated and decided by a semi empirical equations. The fifth is heat release by vapor from the cell. This factor is difficult to measure precisely. However, the equation can only be employed for the normal electrolysis. If there are excess hydrogen and oxygen gas, so we have to measure the gas volume precisely. I am going to show you that the first factor of Hg, water decomposition have to change other equation.

This shows the gas measurement sketch. The condenser passes the hydrogen gas that mixes the oxygen and vapor, and removes only water. The 8-mm diameter of Tigon tube connected with the gas exit of the condenser, and it installed with a hydrogen flow element. The flow meter element was model-3100 made by Kofloc Co., and the controller was CR-700 made by same Co. The flow to voltage transformer element is a heated tube of thermal flow meter system, the minimum detection rate of hydrogen gas flow is 0.001 cc/s, and the resolution is within 1%. The power output from the measurement system was led to the computer through a logger.

We changed the input voltage as this graph. In this case, the plasma electrolysis occurred at 120V. Once plasma start, input current suddenly dropped. Meanwhile, the solution temperature is around 80degree. And then we increased the voltage as stepwise to 350V and then decreased to 100V. Plasma continued at 100V and ceased at 80V.

The gas from the cathode room is calibrated by the Q-mass continuously as shown in this graph. These gases are the main composition. Hydrogen gas was appeared once electrolysis start and it decreased after the plasma electrolysis occurred. At the same time, oxygen gas increased. This oxygen gas means the direct water decomposition started.Here, the behaviors of the hydrogen isotope molecules show the same as hydrogen molecular ion.

This graph shows the time changes for hydrogen and oxygen molecules and their ratio. The ratio increase as input voltage, it shows 0.45 at 2500s of 350v of voltage. It means the gas from the cathode was occupied by direct decomposed of water gas.

Figure shows the changes of hydrogen generation estimated from current and flow meter.These rates were same in ordinary electrolysis. However, the value estimated by flow meter shows deviation toward the up side compared the value of the current estimation.