Hydro Differential pressure exchange over unity system.

[LarryC]

This last little RED statement worries me, pulls me up short. Have I missed something?
Compressed air must be pumped in? From where? What does the pumping, how much compression, etc. and is this pumped in compressed air accounted for when we have been told that, except for the precharge, nothing is added or exhausted during operation?

I don't know how much you had in Red, but I'll try to answer this part for now as I am working on a new example now which will show more.

That is from an example of how to get the POD to sink at 4.8 to reduce the total lift to approx. 2500 LB. It could have been done at other PSI's (8.8,7.etc.) without blowing the skirt, but it is easier to understand at 4.8. The water is lowered, POD sinks, and the original PSI on the layers is now lower then what is was originally at the total 4.8 PSI. This also lowered the lift much below 2500. So compressed air is added from below the POD to bring up the PSI on the layers to the original value. It would only need to be done once as part of setup, and remains during operations. Then to bring the system back to 8.8, on the layers, water is added under the pod to fill the small POD/Retainer Gap (~ 9.5 SI). The POD would have a similar lift as it had at the initial 4.8 before water drop, not a problem, as it is mainly used to rise with the system to maintain the Head levels on the layers.

I don't have an NDA, so my examples are based on a lot of shared facts from Wayne and part logically deduction on my part. So it is not how the actual system works, but it could work in a replication. My goal is to keep the examples simple for everybody to understand and anybody is wellcome to check my spreadsheets. I'll be glad to make corrections.

Regards, Larry
 

[neptune]

@Mondrasek. Thanks for that clear description of the "set up " procedure . Referring to your first paragraph, you talk about adding the risers one by one and venting the air. Here is a different way to do it that I think would work, and would eliminate the need for vents.
       Just fit the pod and all the risers, and then mechanically restrain the risers from rising. Now pump water into the central chamber, until it pours out of the outer gap. I am not sure if this would totally purge all air from the system. If it would not , then in the case of a smallish model, we could pump water in at a high rate, and whilst holding the model over a sink , constantly invert it and return it to upright . Would this work?  If any air remains in the upper part of the chambers, as long as its a small amount it would not matter, as we are going to add air anyway. What do you think?

[mondrasek]

@neptune, I believe your method of starting with a dry assembly and then adding water from the bottom of the Pod section would work fine.  And there is no need to try and purge all the air out of the system at all.  Any air that remains is exactly where you want the air to be.  I think some additional air would still need to be added after the water, but just not as much now.

M.

[neptune]

I am pleased to hear that my simplified set up stands a good chance of working . This is really good news for model builders. Elimination of riser vents is no trivial thing, as it saves building time and gets rid of hidden leak points that would be hard to detect .
         I just had an idea. Think of Wayne`s original hose pipe analogy. Take a length of clear plastic pipe. Attach it to a back board that has horizontal lines marked on it, say at 1 or 2 mm intervals. Arrange the pipe in a sine wave shape having an amplitude of say 250 mm, and a wavelength as short as possible. Mount it on the wall. If we use a syringe, and a long thin pipe pushed into the main pipe we can fill all the lower parts of the sine waves with water and the upper parts with air. As we pressurise the main pipe with air [or water?] from one end . we can see exactly how the water columns react with the air pockets, and how the air contracts and expands under pressure. This would be a useful teaching and self teaching aid, and would enable us to get a glimpse of what happens inside a ZED. The one thing it won`t do is simulate the rise and fall of the risers.

[LarryC]

The first attached picture is showing just part of the spreadsheet, to see the entire spreadsheet you need to download the Travis Effect System Setup.xls below. Anyone that doesn't have Microsoft Office can download the free OpenOffice program from the internet to view the spreadsheets.

The second attached picture is of the spreadsheet that was used to generate most of the data for the first attachment. It is also included below.

Repeat of my previous statement: I don't have an NDA, so my examples are based on a lot of shared facts from Wayne and part logically deduction on my part. So it is not how the actual system works, but it could work in a replication. My goal is to keep the examples simple for everybody to understand and anybody is wellcome to check my spreadsheets. I'll be glad to make corrections.


Regards, Larry