Hi,
On 31-8-2011 0:01, Horace Heffner wrote:
On Aug 30, 2011, at 12:12 PM, Jed Rothwell wrote:
If the only source of heat was electricity, two things are certain:
1. It could not be 12 kW in the first place. The wire would melt. You
can't possibly conduct that much electricity over an ordinary wire.
This is false. If the flow is 3 ml/s then any input power above 1617
W will provide a flue temperature at boiling point. If no one
measures the output of the hose, but rather assumes dry steam, then
the apparent power is over 12000 W.
Just a reality check to see how thick a (VDE-approved) single copper
wire you need at least to transfer 12 kW of power through.
Copper resistivity / m =
0.0175
wire thickness theoretically possible "approved (norm)"
I_max (A) 230V
1 phase
A (mm^2 ) D (mm) R/_m (?) I_max (A) P_max (W) P_max
(W)
8.0 3.19 0.00219 53.33 12267 53.00 12250
As far as I can see from the photos of the Rossi reactor, the wires to
the heating resistors are a lot smaller than the 3.19 mm diameter (=
approx. AWG 8 !)
Kind regards,
MoB
