Hi Joe,
I found an error in my calculation of the critical temperature, the
temperature at which all energy merely goes into heating the water to
100°C, with none left to produce steam. You will probably like the
improvements. I have reposted:
http://www.mtaonline.net/~hheffner/RossiThermal.pdf
http://www.mtaonline.net/~hheffner/RossiThermal2.pdf
http://www.mtaonline.net/~hheffner/DecayCurve1.pdf
The old formula for Critical Temp. was:
(Critical Temp.) = (Thermal Resistance) * (Water Heating) +100
The current formula for Critical Temp. is:
(Critical Temp.) = (Water Heating)*(Thermal Resistance)+(Inlet
Temp.)
I also added a "Thermal Power" column to the decay curve data to show
the thermal power applied to the water as the temperature decays.
Note that at the critical temperature Tcrit in the decay curve the
power applied to the water is equal to that required to heat it to
100°C, namely 268.3 W. This is also the critical time 23.73 minutes.
Note especially in RossiThermal2.pdf, in Mode 2, that a mass of
between 5 and 10 kg, at initial Mass Temp. of 300*C, provides a 15
minute thermal decline curve with no nuclear energy involved.
However, the flow rate used is that suggested by Mattia Rizzi, 3
liters per second, not 7 liters per second.
Horace Heffner
http://www.mtaonline.net/~hheffner/
