2012 Work
Check Jarv's blog post for the latest: http://jarvist.posterous.com/migovec-hydroelectric-project
Theory, Background & Motivation
It's never going to work!
2010 Implementation
DC Pump
The pump we found is made by the Dongguan Zhonglong Motor & Electric Company: http://www.zhonglongmotor.com/english/chanpinok.asp?PicID=6
It's a tiny 24V DC Water Pump, spec'd at 420ml/s to 11m head height running off 24V DC, pulling over 60W.
The construction is really quite nice - four nuts + bolts hold the pump assembly together, which is made out of 3 injection moulded pieces of plastic. The volute chamber and inlet/outlet hoses form the first bit of plastic which has a o-ring seal.
£30, delivered, from China.
Lay flat Discharge Hose
This stuff appears to be perfect for lightweight hydro - coiling flat for transport yet still standing an atmosphere or two. This appears to have quite large use on building sites + farms as pump discharge hose when training ponds.
Search eBay using the above magic words to find it in diameters from 20-50mm, cut to the metre.
