General topics and schedule:

• estimating the amount of water needed for a household
• basic types and operations of water pumps
  • surface vs. submersible
  • centrifugal (high flow, cheap, low head)
  • positive displacement (lower flow, more pressure, higher efficiency)
• fixed power (battery or AC)
• variable power: solar panel + controller - no battery
• measuring pump characteristics
  • practice with bilge pumps
  • flow rate vs. head chart
  • voltage / current / flow rat
• matching solar potential to use
• controls
  • level switch
  • dry run protection
  • pressure switch
  • floating valve or switch
• pipes and tanks

Notes for class:

You might want to review the solar panel and sizing notes from last time.

Solar pumping notes

Reading

El jocote, solar water pumping & health survey
http://www.greenempowerment.org/blog/?p=1197

Solar water pumping in Sahel
http://woods.stanford.edu/cgi-bin/evp.php?name=africa

video on solar pumping
http://www.youtube.com/watch?v=RTtBEbf-NRs

abstract and reference to this work (and you can get the whole article from the PSU library
http://www.pnas.org/content/early/2010/01/13/0909678107

Solar puming in Amguo

Installation in Amguo

Installation in Poteritos

Also, the following related videos and web sites:
Ram pump installation (July 2010) in the Philippines:

http://www.youtube.com/watch?v=gjtm2FBiOfY

Assignment:

to prepare for next time