At 09:24 PM 6/16/2008 +0200, Hans Duinhoven wrote:
>.... I wonder if some of you ever tried the following fuel economy
It was almost fun wasting my time on this one.
7 amps at 12 volts is 84 watts, or 0.11 HP or electrical energy being
consumed by the "brick". That electrical energy is splitting
hydrogen and oxygen from water. When the Hydrogen and Oxygen are
recombined by burning you get back 0.11 HP worth of heat (assuming
100% reversible conversion efficiency).
If the alternator is 80% efficient it is consuming 0.14 HP from the
V-belt drive. If the engine is 25% efficient it might produce 0.03
HP from the hydrogen gas. Net energy conversion efficiency is 20%,
or 80% loss of energy in the process. The net energy output from the
hydrogen might just about run the auxillury water pump, so the
increased load on the alternator is a total loss.
Does it not seem funny to anyone else that the engine in the video
was consuming more than 2 gallons of fuel per hour when idling, at
the same time it was blowing black soot out the tail pipe? A stock
MG will consume about that much fuel at a steady 60 mph cruise speed
around 3500 rpm. I suggest the first test was done on full choke,
while the second test was done without choke after the engine warmed up.
No cigar for that bloke.
1958 MGA with an attitude
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