[Vo]:Thoughts on the eCat and 130C steam

[Alan J Fletcher]

I'm still trying to figure out what's going on!

The outlet port is very high on the unit ... if it was just the overflow from a kettle boiler then there wouldn't be any room for steam.
I might have to go back to thinking of it as a Tube boiler, where the flow of the steam carries the water with it.

But in the early stages of the process the overflow water clearly pulses, just a fraction of a second later than the sound of the pump. That implies it's directly connected to the incoming water. It's a kettle again.

I've put up a few of my calculator results at http://lenr.qumbu.com/rossi_ecat_sep11_b.php

It's clearly producing SOMETHING ... but how MUCH?
How does it get the 130C at the instrument port and 50% fluid water at the outlet?

I think there are three ways of reaching 130C.

a) The internal pressure is 3 Bars, and the quality is 0.5. The water and the steam are in equilibrium at 130C.

   As the 130C steam  leaves the system the pressure drops to 1 Bar and the temperature drops to 100C
  (adiabatic expansion -- a vertical line on the temperature-enthalpy diagram) -- and it might start condensing.

   But the 130C water would probably flash into steam, and in the process cool down to 100C.
  So do we end up with  MORE or LESS water than we had inside the eCat?

b) The internal pressure is 1 Bar (atmospheric, plus a little back-pressure), as a single chamber.

    In this case, the only way you can reach 130C is for ALL the water to evaporate, and for the steam to be super-heated.

    The 130C 100% Dry superheated steam leaves the eCat. But to get the observed 50% fluid water, this has to cool and condense in about 10cm.
    I don't think you can get rid of enough heat that quickly : it need nucleation sites, which will be available only on the wall of the tube.

c) The eCat is structured as TWO chambers : the first is a kettle boiler at 100C (1 Bar). Any excess fluid overflows directly, at 100C.
    The steam component then goes into a second chamber, where it is superheated to 130C at 1 Bar.  Because it is a separate chamber
    it does not have to be in equilibrium with the water.

    Note : this separation of boiler and superheater is very common in traditional boiler design.

WARNING : needs a non-proportional font like courier !!!

                                            Port
                                            |  |    
             *------------------------------*  *----*
             |     Superheated   1 Bar      |  |    |  
             |     Steam        130C ==>       |    |  outlet hose
    95% Dry  |                                 *------------------------
 1 Bar 100C  |  ^  *=====================*       Superheated steam =====>
      Steam  |  |  |  CORE               |        130C
             |~~~~~|                     |~~~~~~~~~~~~~~~~~~~~~~~       overflow fluid 100C
             |     |                     |          *---------* ~  *-----
             |     *=====================*          |         | ~  |
   ~~~~~ ====|       Water                          |         | ~  |
   Inlet     |       Boil 100C                      |        Water Trap 100C
             *--------------------------------------*


   This 130C steam also exits through the hose, and may (but need not) condense.
   It does not have time to reach equilibrium with the 100C overflow fluid over the 10cm distance.

   The main reason I DON'T like this is that the outlet is so high on the eCat.

Missing measurements:

  a) Pressure at the instrument port (to confirm it is 1 Bar)
  b) Temperature of the overflow fluid water -- should be 100C
  c) Temperature of the steam exiting the eCat -- if it was superheated at 1 Bar then it should still be at 130C


I can't figure out the "dumping" of the water at the end, either.  Is it 100C water, or is it 130C water? 1 Bar or 3 Bars ?

I've never seen 25L of boiling water dumped through a tap, so I don't know what it should look like.
The general argument is the same as for the hose outlet -- 130C water would flash VERY rapidly.

ps -- This is a first/////  second draft of what I'm thinking.  I'll change my mind again tomorrow!