Odeáxere dam
| Odeáxere dam | ||
|---|---|---|
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| location | ||
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| Coordinates | 37 ° 12 '7 " N , 8 ° 41' 54" W | |
| country |
 Portugal
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| place | Faro district | |
| Waters | Odeáxere | |
| Height upstream | 86 m | |
| power plant | ||
| owner | Associação de Regantes e Beneficiários do Alvor | |
| Start of planning | 1955 | |
| Start of operation | 1958 | |
| technology | ||
| Average height of fall |
28.51 m | |
| Expansion flow | 0.9 to 2.6 m³ / s | |
| Standard work capacity | 1 million kWh / year | |
| Turbines | 1 Francis turbine : 0.61 MW | |
| Generators | 1 × 0.72 MVA | |
| Others | ||
The Odeáxere dam ( Portuguese Barragem de Odeáxere or Barragem da Bravura ) is located in the Algarve region of Portugal in the Faro district . It dams the river Odeáxere to a reservoir (port. Albufeira da Barragem de Odeáxere ). The small town of Odiáxere is about six kilometers southeast of the dam.
The project to build the dam began in 1955. The construction was completed in 1958. In addition to irrigation, the dam is also used to generate electricity. It is owned by the Associação de Regantes e Beneficiários do Alvor .
Barrier structure
The barrier structure is a double-curved concrete arch dam with a height of 41 m above the foundation level (36 m above the river bed). The top of the wall is at a height of 86 m above sea level . The length of the wall crown is 150 m and its width 5 m.
The dam wall has both a bottom outlet and a flood relief . A maximum of 8 m³ / s can be discharged via the bottom outlet, and a maximum of 21 m³ / s via the flood discharge. The design flood is 300 m³ / s; the probability of this event occurring was determined to be once in 100 (or 1000) years.
Reservoir
With a normal storage target of 84.1 m (maximum 85 m at high water), the reservoir extends over an area of around 2.85 km² and holds 34.825 million m³ of water - 32.26 million m³ of this can be used. The minimum stowage destination is 64.5 m.
power plant
With an installed capacity of 0.61 MW , the Odeáxere power plant is one of the smallest hydropower plants in Portugal. The average annual production is 1 million kWh .
The Francis turbine with horizontal shaft was supplied by Voith . It has a maximum output of 0.61 MW, while the associated generator has a output of 0.72 MVA . The rated speed of the turbine is 750 rpm. The nominal voltage of the generator is 400 volts . In the switchgear , the generator voltage is increased from 0.4 kV to 15 kV by means of a power transformer.
The fall height is 28.51 m. The minimum flow is 0.9 m³ / s, the maximum is 2.6 m³ / s.
