This is Post No. 1 in a series of 5; each post deals with the particulars of our projects. These posts are designed to give more information about the technologies and techniques AWP is promoting.
1. AWP Manual/Pedal Water Pump
2. AWP Windmill Water Pump
3. Basin Irrigation
4. Conservation Techniques
5. Solar Water Heater
As the user rotates the crank (hand crank in the first two photos or bicycle crank in the third photo above), the tyre-pulley spins. The rope is pulled by the tyre-pulley, through the pipe (40mm diameter), down into the water, and back up the pipe. As the washers tied along the rope pass through the water, they lift water up and out of the pipe. This happens many times per second, and a large volume of water flows through the pump. Water flowing from the pipe falls into a 25 liter plastic container, which funnels the water into a larger diameter (50mm to 63mm). Finally, the water exits the pump into a stilling basin at the top of the irrigated garden.
The manual/pedal pump is very effective and can irrigation a substantial garden. Compared to a treadle pump, the manual/pedal pump is superior by every measure.