On Tue, Nov 22, 2011 at 6:20 AM, Joshua Cude <[email protected]> wrote: > It is Rossi that is *claiming* an 8-fold (actually closer to 7) > instant power increase. When the temperature is 99.9 degrees, if we > accept Rossi's flow rate, then the output power is about 66 kW. When > the temperature is 105 degrees or so, *Rossi* (not me) claims the > power output is 470 kW.
I still don't understand what the hell you're talking about, but you'll have to excuse me, I'm not very familiar with thermodynamics. Meanwhile, while browsing a book on heat transfer, I came across this paragraph: > The behaviour of the fluid during boiling is highly dependent upon > > the excess temperature, delta T = T_s - T_sat, measured from the > boiling point of the fluid. Figure 9-1 indicates six different > regimes for typical pool boiling; the heat flux curve is commonly > called the boiling curve. Here is that figure : http://i.imgur.com/1LQwK.png T_s is the temperature of the heating surface. It seems that a couple of degrees of increase for T_s translates to a couple of orders of magnitude increase in power transfer. That, plus the fact that power transfer is proportional to the area of contact. If you pump in water, you may cover more of the heating element if it has vertical surfaces, and thus arbitrarily increase the power transfer. Sincerely, -- Berke Durak
