A pair of oxen can work in a safe manner for four hours producing 1,2 kwh sufficient to lift 4 cubic meter with a 4 meters head. Different pairs of oxen or other big animals can, in three subsequent sessions, lift 16 thousand liters per day. For 300 hundred people, this means 50 liters per capita per day: according WHO this allows personal consumption and hygiene.
In case of different head the quantity of water will vary in proportional way.
WEDAP
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The draught animal power is largely available in rural areas of developing countries. According to FAO evaluations, more than two hundred millions animals are engaged, in agriculture, in developing countries.
The updated use of draught animal power is a local technology that does not need the expenditure of a large amount of foreign currency.
The spare electricity produced by draught animal work, not utilized to lift water, can be used for electrification of dispensaries, health care equipments such as surgical equipments and small refrigerators for vaccines, mobile telephone systems, classes, PC for education and communication, TV and radio sets for education and weather forecasts.
Technical Assistance in the use of electro mechanical pumps moved by draught animal power
To increase the availability of water resources in developing countriesWEDAP supplies technical assistance for the transformation of the mechanical pumps, moved by draught animal power, in electro mechanical pumps
WEDAP canassist Governments, International Organizations, Charities and Private Sector
WEDAP supplies technical assistance for the opening of local workshops to produce locally the equipments, for the vocational training of the people and for creating field teams.
A capacity building process will be addressed also toward the the management of the water resources and the animals.
An e-learning process could be developed for transferring the best practices to the training people engaged in the vocational training of the farmers.
Technical assistance could be addressed to the creation of logistic areas for the supply of the equipments not easily available in the villages.
It could be promoted a cooperation process with non governmental organizations and also a found raising activity.
Generally speaking, in the villages, water is collected by women, water resources are public while animals are private. All this elements should be coordinated within the technical assistance program.
In developing countries a significant part of the animals working in agriculture is engaged in the lifting of water with traditional mechanical systems.
The technical improvement of these equipments is now obtainable through the transformation of the pulling power of the animal, walking on a round path, in electricity.
This is possible using a gear system that increase the number of rounds per minutes of the systems up to a speed sufficient to move an electric generator.
The electricity produced by these generators feeds the pumps that lifts the water. The electrical pump is simpler and more efficient than a mechanical traditional water lifting system.
Due to the seasonal nature of the works, the average use of animals in agriculture is only of one hundred and twenty days a year. Then there is a lot of spare energy available without compromising the health of the animals. In this contest the real cost of the energy is that of a bigger ratio of feed for the animal in the working day: really a negligible cost!
To produce energy the men are only engaged in the harnessing of the animal and in a general remote watching.
The use of animal power to produce electric energy will make available quality energy at costs minor then the costs of other energy sources such as the connection to the electric grid, the photovoltaic, the wind, the hydroelectric or the internal combustion engines.
This means that with the same amount of money is possible to supply with water a bigger number of people.
This system allows to exploit water layers deeper than those now exploited with traditional mechanical pumps.
The water is not polluted by the steps of the animals, the dung and other biological products because the animal can work far from the well.
The use of an electrical pump allows to lift water from plastic or iron tubewells and this can avoid the closure of the hole now so frequent due to the fall down of the walls of the well.
The system is ideal to create a water network with lifting the water on the top of a distribution tower.