On Tue, Nov 22, 2011 at 3:19 PM, Joshua Cude <joshua.c...@gmail.com> wrote: > > > On Tue, Nov 22, 2011 at 2:05 PM, Harry Veeder <hveeder...@gmail.com> wrote: >> >> This is like saying that because a theatre gradually filled with >> people over two hours it is implausible to believe the same theatre >> emptied of people in minutes after a fire alarm. >> However it is only implausible based on the assumption there is only >> one entrance/exit or the entrance/exit is small. >> > > It's not really like that at all. In the Rossi scenario, the rate of input > powers are known. The input power is 160 kW or so during pre-heat. And it > heats up to the level required to transfer 70 kW to the water in 2 hours. > During the self-sustain, Rossi claims the input power (from the ecat core) > is 470 kW, and it heats up to the level required to transfer the full 470 kW > to the water in a few minutes. > So, it's more analogous to the theatre filling up gradually over 2 hours > with people coming in on average at 10 persons per minute. Then it empties > out in 2 minutes with people leaving at 30 persons per minute. It doesn't > compute. > (If you take account of heat leaving as during the heating process, it > becomes even more implausible.) >
The point is that the length of the warm-up interval by itself does not render the output implausible. If you think it is implausible then presumably you think the ECAT could not be heated electrically to self sustaining temperatures in minutes without failure (melting/exploding). The plausible explanation for the long warm up interval is that the self-sustain mode must be approached slowly. If the ECAT is heated too quickly, the self sustain mode may not last very long or it may never be reached. Harry
