Mathematical Analysis of an Ideal ZED

[minnie]

    Right Webby,
                       it would seem that the old Koala wasn't far out with his spring
    assisted bollard, was he?
           I  know for a fact that you can't shuffle water or air through pipes etc.
     and get anywhere near 99% efficiency.
          When you look at a turbine you could possibly get 70+%, or a water
      wheel will struggle to achieve 50%.
           How many % must your ZED give to drive a turbine and leave you
       with something to take home?
                         John.

[MarkE]

    Right Webby,
                       it would seem that the old Koala wasn't far out with his spring
    assisted bollard, was he?
           I  know for a fact that you can't shuffle water or air through pipes etc.
     and get anywhere near 99% efficiency.
          When you look at a turbine you could possibly get 70+%, or a water
      wheel will struggle to achieve 50%.
           How many % must your ZED give to drive a turbine and leave you
       with something to take home?
                         John.

Take for example webby's latest set of specifications.  It yields a device with an effective spring rate of 0.29N/mm, a compressed height of just over 69mm an OD greater than 34.6mm and a height extension of just under 3.5mm  But the fool spill piston diameter is 195mm.  So the volume this thing eats up is roughly 2100cc's IE 2 liters and the energy it can store each cycle is less than 2mJ.  It can cycle those 2mJ's about once per second, half a second up and half a second back down.  If we scale up to transfer 1W we will need 1,000,000cc's or 1m³ just to get 1W.  A pack of 10 springs costs $12 on Amazon that has the same rate, and almost three times the load capacity, almost 10X the energy capacity, and occupies 16.6mm x 2.25mm OD, 0.066cc = 1/31,000th the volume of the Russian Dolls of Ignorance Webby has cooked up, and we can store 10X the energy.  The resulting energy density is over 310,000:1 in favor of the dirt simple, ~$1. spring.  And don't forget that we are not done yet.  Because after all of that, what we have is something that can lift a 3.5mm x 195mm diameter pool of water above a spill gate.  In order to do anything useful, now additional apparatus has to be installed to refill that shallow pool, and also do something with the spilled water.

http://www.amazon.com/Compression-Spring-Metric-Compressed-Capacity/dp/tech-data/B005S4DGL8

The HER/Zydro over unity claims are not only false, the energy storage density of the ill-conceived scheme is completely absurd.  A gerbil running in its play wheel has orders of magnitude greater energy and power density than the ridiculous Russian Dolls of Ignorance that HER/Zydro pitch.

[MarkE]

Parts of it are close,, the question is how much does it take to compress the spring, and how does that compressed spring grow longer while it is lifting without decompressing.

Ask MarkE if he can find you a spring that does that.

The useless "ideal ZED" loses force as it extends going from State 2 to State 3.  It's external behavior is indistinguishable from a linear compression spring.  The return from State 3 to State 2 again requires a variable force that varies linearly with distance.  It is the exact transfer function of a compression spring.  Only a $1 spring is thousands of times more energy dense, cheaper, and more reliable than the Russian Dolls of Ignorance.

[camelherder49]

Webby

Your actual questions are never answered.Just "talk around".

[MarkE]

Webby

Your actual questions are never answered.Just "talk around".

Do you claim that HER/Zydro's devices are of any use?  Do you claim that they have anything that is over unity such as they claim?  Do you find utility in a spring emulator that is 300,000 times less energy dense than a ~$1. spring?