Hybrid Car – More Fun with Less Gas

Solar water pumping

register ::  Login Password  :: Lost Password?
Posted by sspence on May 11, 2009, 11:02 pm
 
A few years ago we invested in a high quality dc pump for our offgrid
water system. It was recommended we go with a solar force piston pump
with a 12v motor. Although it is a fine pump, and is much more
efficient
than our old jet pump, it was well over $000. Piston pumps were well
known 50 years ago, and can last a century if taken care of. We have
replaced the rubbers and packing in a few of the old ones, but parts
are
getting hard to find.

Read more at
http://www.green-trust.org/wordpress/2009/05/11/energy-efficient-water-pumps/

Steve Spence
http://www.green-trust.org

Posted by Morris Dovey on May 11, 2009, 11:13 pm
 
sspence wrote:

Hand crank or pedal at 300 - 400 RPM? Wow.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

Posted by sspence on May 11, 2009, 11:18 pm
 
Gearing my friend, gearing. 50 rpm at the pedal, 300 at the pump, 6:1
pulley ratio.

Steve Spence
http://www.green-trust.org

Posted by Morris Dovey on May 12, 2009, 1:13 am
 sspence wrote:

I think I might enjoy watching the last 60 seconds of a ten-minute video
of that. :)

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

Posted by sspence on May 12, 2009, 1:48 am
 
3 or 4 minutes on the exercise bike a few times a day is all that's
necessary. it's easy. You can see it at http://tech.groups.yahoo.com/group/=
apptechdesign/

This Thread
Bookmark this thread:
 
 
 
 
 
 
  •  
  • Subject
  • Author
  • Date
please rate this thread