Naps Solar Systems: Solar powered water pumping system in Yemen
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A solar powered water pumping system was implemented in a remote mountain area in Yemen to provide clean water for domestic and health care use. The system included 24 solar panels producing a total of 1200W of power, an 1500W inverter, and a submersible pump. It was able to pump 8000-9000 liters of water per day at a lower cost than using diesel. The implementation was smooth and the system met the community's needs, with further sites being planned. Solar electric pumping was shown to be economically viable for villages up to 2000 people.
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Naps Solar Systems: Solar powered water pumping system in Yemen
- 1. Copyright © Naps Systems Oy 2012 Solar powered water pumping systems Project in Yemen
- 2. Solar Electric Systems in Water Pumping Copyright © Naps Systems Oy 2012 • Pumping water from wells, boreholes, rivers or lakes in remote areas • Water used for domestic, health care or irrigation • Main system components: solar electric array, AC inverter and a submersible pump/motor unit • Pumps can operate with 15-100m head giving about 17-40m3 water a day • No need for batteries: water stored in reservoir tank • Number of system elements depends on the pumping head, required amount of water and the solar irradiation available at site
- 3. Case: Project in Yemen Objectives and site specific issues Copyright © Naps Systems Oy 2012 Objectives: • To pump clean water for domestic and health care use • To provide power for water pumping system Site specific issues: • High mountain area with no electricity grid • Extension of the electricity grid would have been expensive because loads are relatively small (1200 W) • Due to difficult terrain regular fuel supplies would have been difficult. In addition maintenance of the mechanical equipment problematic
- 4. Water Pumping Project in Yemen Implementation Copyright © Naps Systems Oy 2012 System configuration: • 24 Naps 50G modules, total power (1200 W) • A 1500 Watt inverter • Pump SP1A-28 • Cables and structure for installation Output: • 8000 - 9000 litres of water per day Cost comparison: • Solar electricity 0,54 USD per m3 • Diesel 0,63 USD per m3
- 5. Water Pumping Project in Yemen Conclusions Copyright © Naps Systems Oy 2012 • Solar electricity is technically and economically successful • Implementation was smooth, only little site preparation was needed • System meets the needs of the community • Further sites for electric systems is being planned • Solar electric pumping is competitive for villages of max. 2000 people
- 6. Water Pumping Yield Examples Examples Copyright © Naps Systems Oy 2012 Daily water Total dynamic Daily energy yield m3/day head m demand kWh 10 30 2.5 20 30 5.0 20 100 11 10 50 3.8
- 7. Selected References Copyright © Naps Systems Oy 2012 Bolivia Yemen Zimbabwe In addition Kenya, Tanzania, Uganda, Eritrea, Mozambique, Djibouti, Zaire, Congo and Sudan all have water pumping system supplied by Naps. Ethiopia 7
- 8. Copyright © Naps Systems Oy 2012 Naps Systems Ltd Ruosilankuja 4, FI-00390 Helsinki, Finland group@napssystems.com Tel. +358 20 7545 666, Fax +358 20 7545 660 www.napssystems.com