A 5-7 min draining time is completely consistent with 1 atm (ie no
additional pressure). That represents a flow of ~50ml/s or a velocity of
~15cm/s which is ~ 1/66 of the velocity obtained from dropping for 1 sec in
a gravity field. Since mgh=1/2mv^2, h= 1/2 (.15m/s)^2 /10ms^-2 or h=0.1125cm
so the water only has to drop a 1/10 cm to gain enough KE to drain the tank
at 50ml/s.
----- Original Message -----
From: "Jouni Valkonen" <[email protected]>
To: <[email protected]>
Sent: Tuesday, September 20, 2011 5:50 PM
Subject: Re: [Vo]:Calculations for 1 MW plant. + Time to Drain the eCat
Alan, excellent work again. Considering Akira's temperature graph, we
can take that draining took about 5-7 min. In the beginning pressure
was 210 kPa or 122°C. But it is needed to take into consideration,
that valve was opened slowly. In the end of video, valve was only half
open.
http://i.imgur.com/lU42G.png
Therefore I think that we have now rather conclusive proof, that
indeed, temperature gives us at least approximately the pressure
inside E-Cat. It is not anymore just an assumption, but data supports
the idea.
–Jouni
2011/9/21 Alan J Fletcher <[email protected]>:
I just ran the calculations for draining a 30L eCat through a 0.25 cm
radius
tap.
http://lenr.qumbu.com/rossi_ecat_sep11_f.php
The drain-time says 2 Bars !!!!!
6. Discharge at the End
I can't figure out the "dumping" of the water at the end, either. Is it
100C
water, or is it 118C water? 1 Bar or 2 Bars ?
I've never seen 25L of boiling water dumped through a tap, so I don't know
what it should look like. It does appear to come out under pressure, and
it
does seem to flash to steam at the edge of the stream -- both supporting
evidence for an internal pressure of 2 Bars. The video ends before the
discharge is complete.
Time to drain tank
The drain is at a depth of 30 cm and 30 liters is to be drained (based on
the dimensions of 60 x 50 x 30 cm). The radius of the outlet tap is about
0.25 cm.
For atmospheric pressure (1 Bar) the time to drain is 1260.18 secs ( 21.00
min)
For a pressure of 2 Bar we can ADD 33 feet of water to the tank height
(draining from 33 feet + 30cm to 33 feet + 0 cm). The time to drain is
then
108.02 secs ( 1.80 min)
Although the video ended before the eCat was completely drained, the time
shown on the video (6:44 to 8:05) -- or 1.83 minutes tends indicate 2 bars
pressure, not 1 bar.
The time to discharge, the fact that the flow did not diminish, and that
the
water seemed to flash into steam around the edge, all support the
"pressurized" hypothesis.
The general argument is the same as for the hose outlet -- 118C water
would
flash rapidly.
