On Jun 24, 2011, at 10:08 AM, Joshua Cude wrote:
On Fri, Jun 24, 2011 at 12:34 PM, Daniel Rocha
<[email protected]> wrote:
The output temperature and flow output, even visually, are convincing.
They are visually equivalent to putting off a candles by blowing them,
that is 0.2W - 0.4W. But to make it only by heating water and
vaporizing requires more than 2000KW.
Well, we're all just guessing, of course. I don't think we can
easily quantify the steam coming out of that hose from the video.
Neither its wetness (visibility), nor its flow rate.
But in comparison to the you-tube videos someone linked to that
show 2 kW of steam output, I don't think the feeble puffs of steam
in Krivit's video represent more than a few hundred watts.
It is notable that the power input varies depending on the controller
actions, that if the power input (plus any nuclear output heat if
any) should become less than that required to convert all the input
water to steam then the liquid excess will eventually simply
overflow, i.e. be pumped out into the hose and down the drain.
Note that the pump rate is small, on the order of a few cc per
second, so it can take a while to fill up a hose held upright into
the air, even if the device itself is full of water - which probably
can not happen due to percolator type effects.
It is essential to do first principles calorimetry on the output,
especially integrating calorimetry which determines total energies.
I'm a complete amateur, and even I know that. For example, page 9
ff in this reference is a sample experiment I did in Dec. 1997:
http://www.mtaonline.net/~hheffner/BlueAEH.pdf
which shows some basic amateur calorimetry, including use of a post
experiment temperature decline curve to estimate heat loss thorough
the container walls, a technique which might be useful applied to a
barrel calorimeter, though it is obviously best to insulate the barrel.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
