Joshua Cude wrote:
It is not necessary to do any tests to know that with a given input
flow rate of water at room temperature, if the output fluid is at
100C, the corresponding power for 99% liquid (by mass) is about 7
times lower than it is for 100% steam.
This vessel is shaped like a teapot or a steam locomotive. For a reason.
Unless the liquid flows through too fast and overflows, only dry steam
can escape from it. If it was overflowing that would be obvious from the
temperature.
The vessel will boil away all of the water at these flow rates. It is
not pressurized, so the temperature will be just over 100°C. If vessel
produces more heat than is needed to boil away the water, the vessel
itself will get hotter, and radiate into the surroundings.
This has been common knowledge for 170 years. Anyone familiar with
teapots knows this. The speculation and handwaving here about a magical
ability to make water appear to boil with far less energy than this is
complete, 100% pure, unadulterated bullshit.
Naturally, the steam is quite wet by the time it reaches the end of that
hose. Plus there is probably water in there from the start-up, when the
vessel itself was heating.
By the way, Rossi uses exact numbers with 2 decimal digits of precision,
but obviously the total mass of water over 1 hour was not exactly 7 kg.
That was a rough approximation. He probably measured it, but he is the
kind of guy who does not write things down. He just remembers it was
around 7 kg. It might have been 5 kg or 8 kg. Who knows? It does not matter.
The test probably wasn't exactly 1 hour long, either.
The details do not matter, but if I had been there instead of Krivit,
you can be darn sure I would have written them down. Krivit's
preliminary report was long on impressions, coffee, and (somewhat)
impertinent question, and short on hands-on details such as the weight
of the water, the duration of the test, and so on. It would better with
less Krivit and more facts.
- Jed
