Smallholder Irrigation System
Allied has developed a new irrigation pump system within exacting guidelines simplifying efficient water-lifting methods to provide affordable access to intermediate-depth water reserves in order to expand key geographic areas under irrigation.
For smallholder farmers, increasing the number of annual crop cycles with irrigation could increase their agricultural production by two to three times, giving them an opportunity to move out of subsistence farming in countries that recognize this as a vital strategy for food security and poverty reduction.
Constraints
The conditions that prevent these smallholders from being able to generate a surplus of agricultural products are specific physical barriers that, when combined, present an insurmountable challenge.
Size of plot averages only one-half acre which puts an immediate cap on how much agricultural production can be converted to cash from a single rain-fed crop.
Depth to water below their land is too great for affordable surface (suction) pumps to function, requiring a higher cost pump that can operate from below the waterline.
Quantity of water needed for a cultivated one-half acre can reach 3,000 gallons per day at the height of the growing cycle making a mechanized pump essential.
Lack of grid electricity rules out an entire category of submersible pumps thus requiring an effective pump system to have its own autonomous energy source.
Technology
Our introduction to this design began with efforts to address the water challenges faced by smallholder farmers. Extensive research and interviews with farmers and aid organizations led to the development of a Target Product Profile for a 7–20 meter lift pump, guiding the creation of a product to fill this gap.
With this roadmap, we quickly began testing solutions, knowing the technology had to remain simple and intuitive — something smallholders could adopt easily because it solved a real constraint on their growth and provided a tool they could take pride in using.
Breakthrough Design Features
Separate an aboveground power source from the below-water pump assembly to allow the use of less expensive, more available, and more efficient motors.
Simple, appropriately-scaled lineshaft to transmit the rotation from an aboveground power source to a below-waterline pump end.
Centrifugal pump design that allows slower lineshaft RPM’s reducing wear from friction, vibration, and turbid water while maintaining sufficient flow rate and head pressure.
Pump design allows for gradual, load-free startup extending the life expectancy of impellers, lineshaft, power source, and transmission parts.
Operates from multiple power source options including small gasoline two and four-stroke engines, electric-grid enabled AC motors, photovoltaic solar panel enabled DC motors, and fuel generator enabled electric AC or DC motors.
Right-to-repair design philosophy making each component and subassembly maintainable and repairable by the smallholder or local technician.
Modular design allowing a baseline, “entry-level” system of surface, transmission, and pump assemblies that remain constant as power options and performance specifications are changed or upgraded.
Product Notes
A Target Product Profile (TPP) defined requirements for a pump capable of lifting water 7–20 meters while keeping material costs under $300. Solar power was considered, but the panels required to move the needed water volume would require about 500 watts with an estimated cost of $500 for the energy system.
Small, efficient 4-stroke engines offered a practical entry-level alternative, keeping the total material cost of the irrigation system under $300 and supporting a target retail price of about $800 through local suppliers.
At that price, a smallholder could typically repay the investment within about 18 months while gaining the benefits of year-round food production including higher income, improved nutrition and better access to health care and education.
Because most components arrive in finished form, production is largely an assembly process, minimizing startup manufacturing costs. Assembly could also be decentralized near areas of strong adoption, reducing freight costs while creating local jobs in assembly, machining, welding, warehousing and equipment repair.
Product Links
Updated product images and video links coming soon…
Company
Allied H2O is an Oklahoma benefit corporation, making evident our mission-first priorities and was named in recognition of the relationships forged over 40 years with individuals and companies that are bringing their expertise alongside ours in the development of solution-based products.