What if we use a little bit of HHO in an engine to heat up a drop of water, which expands in volume and so run an engine?
The amount of HHO needed is much less, then if you ran it fully on HHO.
Just a plasma sparkplug, a bit of HHO for getting a high temp rockets boost flame to heat up a waterdrop.....
Here some more theory on this:
A significant feature of the vaporization phase change of water is the large change in volume that accompanies it. A mole of water is 18 grams, and at STP that mole would occupy 22.4 liters if vaporized into a gas. If the change is from water to steam at 100°C, rather than 0°C, then by the ideal gas law that volume is increased by the ratio of the absolute temperatures, 373K/273K, to 30.6 liters. Comparing that to the volume of the liquid water, the volume expands by a factor of 30600/18 = 1700 when vaporized into steam at 100°C. This is a physical fact that firefighters know, because the 1700-fold increase in volume when water is sprayed on a fire or hot surface can be explosive and dangerous.
One way to visualize this large volume change is to note the volume of 18 ml of water in a graduated cylinder as the volume occupied by Avogadro's number of water molecules in the liquid state. If converted into steam at 100°C this same mole of water molecules would fill a balloon 38.8 cm in diameter (15.3 inches).
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So, maybe the injector of Meyer was indead a waterinjector/sparkplug.
By adding a bit of HHO on the air intake, he had the HHO needed to vapourize the waterdrop...
Steve