I think the original intent of Morris Dovey was to make a pump to help
people with not enough irrigation water (and no electricity) make a cheap
pump to get water up from down somewhere in their soil. Such scarcity of
water would preclude your "ram" pump, I think ...
My crystal ball says somewhere between 2 and 3 HP. Note that if we're
driving an alternator, we're not pumping.
The cost of the engine itself will probably be in the $250 ballpark and
the trough, polar mount, and tracking system would probably work out
somewhere between $400 and $750 depending on design choices.
The 4"/100mm bore PVC pump engine being developed appears to be
something that can be user-built for under $100 worth of commonly
available materials - and the pumped volume will depend on size of
collector and height the water is raised. I'm shooting for somewhere
near 1000 gal/hour as a minimal-lift irrigation pump - but note that
this isn't really very much water when you consider hydro-electric systems.
If you really have your sights locked onto a micro-pumped-hydro setup,
then you'll also have pumping losses raising the water to storage and
turbine losses at generation.
On Sun, 15 Nov 2009 22:52:33 -0600, the infamous Morris Dovey
Um, my crystal ball says we need to know what volume the pump is so we
know what volume of tank to build and what kind of refill time it will
True. That's 16.67 gal/min.
Nah, I was just curious and thought you had researched it in much more
detail. I was looking for the Cliff's Notes version, mon.
When we are planning for posterity,
we ought to remember that virtue is not hereditary.
-- Thomas Paine
Then you'll need to wait a bit longer until the first one is running
halfway well. There are volunteer teams on five continents working to
make that happen.
You can read the closest thing there is to the Cliff's Notes version at
but I haven't seen any evidence that the author ever built one of these
pumps, knew anyone who did, or ever even saw a fluidyne engine larger
than toy size...
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