-----Original Message----- From: a.ashfield Actually, it doesn't take a lot of imaginations to visualize a direct gas turbine conversion. The core of the Hot Cat is a 33mm dia tube, so a finned bunch of these replacing the combustion chambers could make for an inefficient engine. Who cares about the efficiency in this case?
OK - this gets back to the same argument which has come up several time previously. Efficiency does matter with the HotCat because: 1) Although LENR (in many forms) has demonstrated periods of infinite COP, everything we know about it indicates that the risk of thermal runaway rises disproportionately in those designs that do not have tight control. 2) Effective control must be maintained by a feedback loop design which does not permit a runaway condition under any circumstance. 3) IOW - The risk of runaway far outweighs the advantage of high COP. 4) Such a feedback design will by nature have a relatively low COP and moreover, this is amenable to accurate simulation. In the thermal simulations which have been run, and Dave may correct me on this- it appears that Rossi's COP of around six seems to fit within an ideal positive feedback design parameter - one which cannot easily lead to runaway. If that is the case, then the low COP which must be implemented may not eliminate a turbine as a viable option, but in the situation where one is needing power at the lowest possible weight, one would need to ask whether a turbine can provide a better power density than other alternatives. Jones
