On Aug 30, 2011, at 6:02 AM, Jouni Valkonen wrote:
Horace wrote: «If you provide numbers for Mass, Thermal Power
(before shutoff), Inlet Temp., Mass Temp., and Inlet Flow then I
will then be happy to provide the corresponding data.»
Perhaps 500 grams was too small value. I re-estimated that if the
outer volume of core chamber is 50cc, then perhaps 2kg is maximum
value for thermal mass in the core. But we know very few details.
The copper tubing does not contain much thermal mass, as it is in
contact with steam/water, thus temperature is less than 100°C.
Anyways my estimationes.
The mass of the core (for storing thermal energy) 500g-2kg.
Max core temperature 1000°C
Thermal power 2-3kW
Inlet: 25°C / 5kg/h
Steam overpressure: 3.2 kPa.
Notice that if core temperature is high (such as during the power
surge in 18h experiment), then only small portion of the core is in
that temperature, but there is temperature gradient. However it is
unlikely that core temperature is high during normal operation.
Unfortunately we (or I?) do not have any data what is the core
temperature in normal operation.
But it is odd that we discuss this because all Rossi's reactors are
currently selfsustaining indefinitely, because he can manage them
adjusting hydrogen pressure and cooling water inflow rate.
—Jouni
Ps. I do not know what model of E-Cat we are talking about. Does we
have pictures? Or is it just some mythical test what was seen by
nobody.
You are providing the input data so you should know which test you
are talking about. Jed says the first test.
In any case I provided some output based on your range of inputs:
http://www.mtaonline.net/~hheffner/RossiThermal3.pdf
Mode 1 was all at 0.83 gm/s, Mode 2 was at 1.94 gm/s. I added some
data at 748 W and 1000 just to consider no nuclear heat options.
Based on the input values a 15 minute decay is only feasible in the
low water flow conditions. It is also feasible that 748 W input,
similar to Krivit's video test, could produce 15 minutes of steam at
2 kg mass. However, this might imply too high a thermal resistance to
be feasible.
It would be interesting to run Jed's numbers, if there is a
reasonable thermal mass number available.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
