Oddball backyard water pumping project [RE-wrenches]

[Kurt Albershardt]

<x-flowed>

--On Wednesday, January 09, 2008 7:43 PM -0600 Travis Creswell <tcreswell at ozarkenergyservices.com> wrote:
>
> With a little imagination one could come up with a
> solar direct battery less system that used some relays a timer and a
> photocell.  So at sunrise the pump turns on, at sun set a double throw relay
> arrangement switches from solar to grid then at 10PM the system shuts of and
> repeats the cycle at the next sunrise.

If post-sunset operation is an absolute requirement, why not pump the water into an uphill reservoir and flow restrict the outflow to the wheel?  You'd need either a full reservoir shutoff or some kind of intelligent outlet gate control, but it would be much more efficient than using batteries.









.


- - - -
Hosted by Home Power magazine

To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at re-wrenches.org

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------

</x-flowed>