Just the opposite. Water is a moderator/ Only slow neutrons (thermalized) produce the fission reaction.
On Tue, May 21, 2013 at 4:23 PM, Arnaud Kodeck <[email protected]>wrote: > ** > > The temperature limitation of fission nuclear plant is due to temperature > of vaporization of water. The reactor must always be filled with > *liquid*water. At the pressure inside a fission reactor, the limiting > temperature > is just a little above 300°C. The water is slowing the neutron. Without > water, a reactor has a meltdown.**** > > ** ** > ------------------------------ > > *From:* Jed Rothwell [mailto:[email protected]] > *Sent:* mardi 21 mai 2013 21:15 > *To:* **[email protected]** > *Subject:* Re: [Vo]:E-Cat general observations**** > > ** ** > > Alan Fletcher <[email protected]> wrote:**** > > **** > > That was the motivation behind the hot-cat : the current operating > temperature of around 300C is likely a good fit with the Siemens turbine > they are purportedly experimenting with.**** > > ** ** > > The pressurized water in a conventional fission reactor is about 320°C I > believe. The reactors could be designed to run at higher temperatures but > they deliberately made them low with poor Carnot efficiency because this > reduces wear and tear on the turbines, pipes and so on. In a system where > the heat costs you little or nothing, it makes sense to trade off Carnot > efficiency for lower equipment costs.**** > > ** ** > > - Jed**** > > ** ** >
