Hi again, I'm still trying to wrap my head around the possibilities for pumped storage. These are the questions I want to sort through: How does stored water...
Pat, A tractor transmission takes a high-speed input and translates it into a low-speed output. If you reverse the connections and use the wheel output as...
hi I'm just awaiting parts for mine 1x 1,000 litre ibc as main tank. submersible pump in main tank 3/4 height tube comes out into cut top of 1 x 500litre ibc...
Thanks Lancie , does anyone have a figure for the efficiency of a tractor transmission? I believe that automotive gear boxes have 5% losses and differentials...
greetings group; I am an experienced home builder/remodeler who is putting together a true passive solar residential project as a commercial venture. Project...
-Water Storage for Microhydro A small amount of storage in a micro hydro system can act as a battery does in an auto. A battery accumulates power slowly while...
Keith The concept of pumped storage is quite simple, water is pumped up during off peak hours or days and is allowed to flow down during peak hours. The only...
Tom Spicher
hydroyes@...
Aug 3, 2007 9:48 pm
8611
Greetings Tom, Putting in a provisional patent applications will allow you to protect your ideas, give you a year before you have to put in a "real"...
Hi there, I'm confused: how much head are you accounting for (that is, height between upper and lower reservoir? And, are you expecting falling water to give...
Hi Tom, thanks for your reply. I understand the basic principles of pumped storage just fine. What I'm trying to see is if pumped storage can be constructed,...
Keith: First do not state amp-hours you need to state watts ( because amp hours defines the capacity to the bank but the voltage is missing -- and voltage *...
nando
nando37@...
Aug 6, 2007 1:44 am
8615
when its done i'll send you the pics borg Keith Winston <keith@...> wrote: Hi there, I'm confused: how much head are you accounting for (that...
KEITH: You may be better off if you use a turbine/generator and turbine/pump for the whole process, though you may be able to have a single turbine attached to...
nando
nando37@...
Aug 6, 2007 6:08 am
8617
... Keep in mind there might be an alternative reservoir for a slow-accumulate fast-dump-on-demand system: compressed air. The theory is that you have an...
Doug Fortune
pentam@...
Aug 6, 2007 6:09 am
8618
Thanks Nando, I subsequently noted kWh (a few thousand hours) in a later email. I used Amp hours since that's how storage batteries are rated, but of course I...
Well Kieth, this is getting more complicated. Pumps are successfully used as turbines and in combination on a pump/generation package. One of the drawbacks...
Tom Spicher
hydroyes@...
Aug 6, 2007 6:11 am
8620
The idea could be attainable but one needs to determine if such arrangement is possible for a small entrepreneur. Large compressed air reservoirs require a lot...
nando
nando37@...
Aug 6, 2007 3:02 pm
8621
Keith: Depressing numbers because you may be looking for something with higher energy needs, maybe you need to see and think a bit different, like where I...
nando
nando37@...
Aug 6, 2007 3:02 pm
8622
Thanks for all the responses! Just to be clear: I assume this would have to be coupled with a smallish battery bank, which could be used to excite the...
That type of turbine looks like it will cause more harm to fish than the horizontal axis 'propellor' type, and maybe more likely to jam from driftwood, etc. ...
Hey Bob, I can't imagine this turbine rotating very fast. Maybe 10 RPM? That may be a real problem for them since they have to solve the parasitic loss of...
... My understanding is that one of the great benefits of the Gorlov turbine is its high torque & low rpm, and thus is fish-friendly. ... ....
Doug Fortune
pentam@...
Aug 25, 2007 3:00 pm
8629
Voith has done several studies on larger turbines designed to be more fish friendly. Their conclusion was a two or three blade spiral propeller optimized...
Tom Spicher
hydroyes@...
Aug 27, 2007 4:50 am
8630
Looking for input on no head prop generators Want to buy one for multiple battery recharge Plan to put it in river current off boat while parked. Looking at...
bob: The first step for you is to determine the velocity of your water source, then the depth to find out what size propeller you can install, then what type...
nando
nando37@...
Aug 27, 2007 5:09 pm
8632
We are designing a micro hydro system off grid and boat access only in British Columbia. I need advice on which pipe to use, and how to install it. Head is 35...
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