An essential component of IDE’s Rural Prosperity Initiative (RPI) is design and development of several low cost technologies which have the potential to dramatically improve the incomes of poor rural households. Here are some updates of work in progress at our Technology Development Facility in Ethiopia from the end of the project’s second year:
Work continues in the development of a lightweight, low cost pump for use in Africa. Twenty test units were recently distributed to farmers in Zambia for field testing, and a systematic review of pump components is underway to select the best features for cost and performance to incorporate into a new design.
IDE’s standard model of hand-cranked pump has been redesigned, resulting in very satisfactory performance. We are also continuing development of a pedal-driven model. The results so far are very promising, and prototype testing will be complete early this year.
Solar powered pumps
We have two solar powered steam engine pumps running successfully in the laboratory that are now ready for testing under field conditions. We’re working on modifications which will further reduce the cost and achieve higher overall solar input-to-water delivery efficiency.
Wind powered pumps
A study of available designs did not identify any off-the-shelf windmill designs for small plot irrigation, but several design options could potentially modified for irrigation pumping. A prototype windmill-driven pump will be tested in Ethiopia in early 2009.
We recently began trial production of 3,000 200-liter hanging header bags to feed drip irrigation systems, and are currently testing them for durability. Later this year, we will begin testing them on farms and getting farmer feedback. A 10,000 liter water storage bag made of high density polyethylene material costing $125 has been successfully tested. In Myanmar, bamboo-supported plastic tanks are being tested on more than 150 small farms. In the aftermath of Cyclone Nargis, protoype versions of these tanks proved essential to relief efforts.