From: Joshua Cude <[email protected]> >To: [email protected] >Sent: Thursday, June 23, 2011 4:59:03 AM >Subject: Re: [Vo]:E-Cat vs. Water Heater for coffee/tea... > > > > > >On Thu, Jun 23, 2011 at 2:04 AM, Harry Veeder <[email protected]> wrote: > >Joshua Cude wrote: >>> >>>On Wed, Jun 22, 2011 at 9:38 PM, Daniel Rocha <[email protected]> wrote: >>> >>>Do you expect water droplets above 100C? This is like expecting >>>>microscopic ice to not immediately melt above 0C. >>>> >>>>You don't expect water droplets above the boiling point. The temperature of >>>>the >>>>mixture of steam and droplets will be *at* the boiling point. >>>> >>>The actual boiling point inside the conduit will be slightly elevated >>>because of >>>a slight increase in pressure. Rossi emphasizes that the pressure is at >>>atmosphere inside the reactor, but in fact it must be slightly higher, or >>>there >>>would be no flow of the fluid. The pressure difference, flow rate, and tube >>>geometry are related by a simple formula, and reasonable estimates indicate >>>an >>>elevation in the bp of a degree or so is easily plausible. >> >>If the boiling point goes up by degree or two that makes no difference to >>the implausibility of water drops existing in the beginning of >>the plume which has a temperature just above the boiling point. >> >> >I don't follow. If the bp goes up, then the temperature of the plume is not >just above the boiling point; it is at the boiling point. And so water drops >are entirely plausible. > Oh sorry, I missed that. I was assuming the temperature in the plume in the chimney is always above the boiling point, whether the boiling point is 99 or 100 or 101 C. Anyone know the altitude of E-cat in that location?
> >What's not plausible is that at the moment it hits the bp, which requires 750 >W, it immediately begins to vaporize all the water, which requires 5 kW. A >7-fold increase in power requires a 7-fold increase in the temperature >difference between the reactor walls and the fluid. How can that happen so >fast? What is the size of this initial temperature difference that increases 7-fold? Don't you mean a 7-fold increase in the heat absorbed by the water? Harry >
