The point is that a gallon empties very quickly even though not vented at the top. The sound it makes is immaterial and is most like caused by the water hitting the barrel. I don't know why you feel the water is under inordinate pressure. The E-CAt is open to the atmosphere unless Lewan seals the other valve. I doubt this as the water seems to be drainig with venting. Why not ask Lewan how long it took to empty the E-Cat?
----- Original Message ----- From: "Horace Heffner" <[email protected]>
To: <[email protected]>
Sent: Tuesday, September 20, 2011 2:46 PM
Subject: Re: [Vo]:Calulations for 1 MW plant.
On Sep 20, 2011, at 10:36 AM, Joe Catania wrote:
Yes a sealed galon bottle may dribble if a hole is poked but if its vented at the top you should get a steady stream. Or if air enters through the bottom you don't get a dribble! I scan't confirm high velocity flow in the video. Since you can't tell me the rate of flow out the valve we have nothing to discuss. The video runs for about 1 minute 20 seconds before ending and the tank is still emptying. I assume ~20L of water in the tank.
Sigh. Look at the video! Do you hear a gurgle gurgle gurgle or a
high powered wooshhhh? The water is obviously under high pressure.
The couple atmospheres pressure estimate by others does not seem
off. You need a numerical velocity to determine the difference?
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.
