Jones Beene <[email protected]> wrote:
*From:* Jed Rothwell > > *Speaking of leaving it to experts, someone has written to me > offli**st**that this very issue of heat transfer was covered at Chennai by > NRL - and > they may have had similar reservations that this was even possible.* > > Weren’t you there, and did they? > > Ø I was there, but I do not recall they mentioned any problem with heat > transfer…. > > > > OK. At least one other person who was there thinks he remembers this, but I > checked and there is no record of it in the transcript, so it is probably a > dead issue. > > > > Ø I will … ask them if they suspect the 130 kW may be impossible from a > heat transfer point of view. We did not discuss that. We agreed, however, > that the 16 kW is in line with a typical electric heater or teapot. There is > no disputing that. > > > > Oh yes, there is a large dispute ! … and fact the two are far different in > this one regard. I recommend that you and your expert both read up and > incorporate “flash steam” into your model (my expert tells me this) > Look, this is nonsense. I have the teapot right here. It is a Krupps BW399. 1500 W. The heater at the bottom looks to be exactly 10 cm in diameter. (It is a little hard to measure from the outside.) This is 1/10 the output of a Rossi device, and it has 1/10 the surface area. There are millions of electric water heaters, both flow and tank, with similar heater surface area, that work at about 12 kW. There are hundreds of millions of teapots and heaters in use. Your expert is wrong. > With a teapot, bubbles form at the bottom and immediately rise through the > colder water, heating it. Flash steam is impossible in this situation due to > the confining weight of water above. > Look, stop the nonsense, go look at a water heater, and you will see that it is possible to heat water whether it is flowing or still, at 12 kW, with the surface area of a 1-liter bottle. This is indisputable. Anyone who so much as glances at a water heater will see it. Stop denying simple reality. Stop waving your hands, and stop pretending that that millions of ordinary machines work. - Jed
