On Fri, Jun 24, 2011 at 5:26 PM, Jouni Valkonen <[email protected]>wrote:
> 2011/6/25 Joshua Cude <[email protected]>: > > On Fri, Jun 24, 2011 at 4:29 PM, Jed Rothwell <[email protected]> > wrote: > >> > >> If you have a high temperature thermometer, please try this at home: > >> Boil some water in a teapot so that steam emerges from the spout. Turn > the > >> flame down, so that only a little emerges. Measure the temperature of > the > >> steam. You will find it is ~101°C. > >> > >> Turn the flame up as high as it will go. A lot of steam will come out. > >> Measure the temperature again. It will still be 101°C. > > > > Of course, because there is liquid water present. You are heating the > water, > > not the steam. > > > That is good insight, because E-Cat heats water in liquid phase. > Heating element is completely submerged into water. Input water flow > is adjusted for exactly on that reason, so that E-Cat's heating > element is always completely submerged. I.E. input flow is adjusted so > that it matches evaporation rate. > First of all, the flow rate is not adjusted in any of the demos after the experiment is started. The only thing that is necessary to account for a flat temperature is, as you say, that the flow rate is high enough so that the entire heating element remains wet. To believe that all the water is converted to dry steam at the bp, would require (1) that Rossi knew beforehand the exact flow-rate to balance the power, and (2) that the power remain stable to a per cent or so. Neither are believable. Rossi's admitted in the secret run, where there was no water/steam regulation that the output power fluctuated significantly. Secondly, why would he want to do this? Allowing the steam to go above the bp would give him the evidence he needs to shut the likes of me up. I've often thought a better way to do this experiment would be to adjust the flow rate (reduce it) until the temperature of the steam begins to climb to 110C or 120C. Then you could be sure the steam is dry, the calculation he likes to stumble over would have some validity. > Therefore E-Cat is exactly the same thing as a kettle where there is a > hose plugged into nozzle and input water flow is adjusted so that > there is always water present in liquid form. Well, that would explain the temperature regulation, but it's not exactly the same, because there is no pump pushing whatever is in the ecat, vaporized or not, out. In the case of the teapot, the exiting steam leaves as it is produced, and so it would be forgiving of fluctuations in the power or input flow rate. That is, the output mass flow rate does not have to match the input flow rate. But the ecat is not open like that. The output mass flow rate must match the input. So, even if the flow rate matched the output of dry steam, a very small decrease in the flow rate or a very small increase in the power would show up as a substantial increase in the steam temperature. The ecat is not a tea pot. Get used to it. > This why E-Cat has a > tall chimney, to prevent overflow of water and boiling away all the > water coolant. The water or steam is pushed out no matter what. It's a closed system. There is no concept of overflowing. My theory of the chimney is it provides a place for the liquid water to become aerosolized by the turbulence of the little steam that is produced, so that what comes out looks like steam. > If there is no water in liquid form around heating > element, E-Cat melts down. > Or the steam gets hotter. Or both. But the steam would get hotter. > P.S. It is surprising that you and abd have written hundreds of very > long messages although misunderstanding is on such a basic level that > people do not know how tea pot is functioning! > We unfortunately do not have the benefit of being trained by members of the tea party.
