Am 27.08.2011 17:09, schrieb Jed Rothwell:
Peter Heckert <peter.heck...@arcor.de <mailto:peter.heck...@arcor.de>>
wrote:
BTW, there is an elegant method to see if the steam is dry:
Dissolve a marker substance in the water, salt or sugar or
something else. When the input concentration is known, the
concentration in output water can be measured and compared.
When the steam was dry then the output concentration in condensed
water must be near zero.
Pons and Fleischmann used that method.
They did indeed. They had a ready-made marker in the cell: the lithium
salts in the electrolyte. They did this two ways:
1. I believe they checked the condensate. If they didn't I recall
other people did, in other boil-off tests.
2. They confirmed that nearly all the of the lithium was left in the
cell, washing out the cell and measuring the amount of lithium in the
water. They could not account for a very small amount of lithium that
ended up in the glass of the cell walls.
You could do this with the Rossi cell but there is no ready made
marker. I guess you could add something to the reservoir. I would use
ordinary salt. Not much, because you don't want to gum up the machine
or corrode it.
They could take samples from the input water and put samples from the
output water and put these to chemical analysis and take their
conclusions. If not purified water is used, then something soluble
should be detected like NaCl traces that allow conclusions. The best,
however where, if the energy is used to do some real reasonable work,
like heating a water bath or a known water stream. The steam could be
directly dissipated into the water instead using a heat excanger, this
should be easy to do.
Peter
