Posted by Morris Dovey on July 17, 2008, 9:41 pm
Long thread with lots of expert opinion - but I didn't seem to have
received the post where the OP told how much water need to be lifted how
Would someone who did see that info please post it?
DeSoto, Iowa USA
Posted by bealiba on July 17, 2008, 11:12 pm
Posted by Morris Dovey on July 17, 2008, 11:46 pm
I'd really like to advocate a direct solar-powered (no electricity
involved) pumping solution of the sort described on a number of web
pages at the link below, but find it really difficult to offer a
solution when I haven't seen a statement of the problem.
There's a photo of a prototype engine at the bottom of the page at the
"Fluidyne Engine Description" link, and a schematic of a pump using such
an engine at another link.
The concept shown at the "Pumped Hydro Energy Storage" page could
perhaps be employed to fill a pond or tank just above the area needing
Note that the only moving parts in the engine are air and water (which
probably won't wear out in the OP's lifetime) and that the engine was
constructed largely of 4-inch PVC drain pipe - a fairly low-cost and
commonly available material.
DeSoto, Iowa USA
Posted by bealiba on July 18, 2008, 12:16 am
Hi Morris. Very good, the total amount of usable information in the OP
was the watts (2500) and the time (0.5 Hr). The watts allows us to
work out the minimum battery capacity. Nothing more.
There is, as you say, no required head or indeed volume. This being
the case, no real and correct answer can be achieved.
Ron claimed that you need to add 20% to the load for losses. He has
yet to define the losses.
Wayne claims that the losses are "Line Losses". This should be enough
of a warning signal to anybody as to Wayne's true ability. Line losses
are the result of resistance in the line and are usually called
"Voltage Drop". Increasing the load will never reduce line losses and
in fact will only increase the losses.
How is the Fluidyne Engine work progressing? Making any gains in
Posted by wmbjkREMOVE on July 18, 2008, 12:44 am
On Thu, 17 Jul 2008 17:16:36 -0700 (PDT), firstname.lastname@example.org wrote:
No problem, I've supplied some typical specs for you, 8gpm and 80'
head, so that you can show us all how to make a solar pump
recommendation. If you have any experience it's a five minute task at
most. What's taking you so long?