These types of turbines are suitable for a wide range of water heads, normally from 10 to over 300 meters. This type of machine can also be used where the water head varies, even with percentages exceeding 50%, of nominal, for lake level fluctuation or in an aqueduct due to the effect of the growing head losses from capacity used. The capacity may also change and still keep a high level of working efficiency and reliability. However, it is advisable not to go down to levels below 35-40% of the designed machine values. The Francis turbine may also be produced with a single runner or in some cases with double outlet runner, opposite to each other with a single spiral casing. In this case, the wheel will be symmetrical and each half is calculated at 50% of the total machine carrying capacity. This makes it possible to increase the speed of the machine with evident cost saving also for the generator.
Orengine Inc., was established in 1985; Within a multinational partnership project financed by Italian Ministry of Foreign Affaire and Ministry of Energy of Ecuador. Orengine's business involves in designing, building and commissioning facilities in renewable energy such as hydropower, wind, solar and bio-mass energy plants around the world.
Machineries, equipments, with related software, were developed and tested by qualified institutions and, in the meanwhile, attention were paid to introduce local industrial structures during the manufacturing process, either for cost reduction and to keep the product maintenance at least at a national level.
Orengine group particularly supplied products, besides of Italy, Europe and Ecuador, in many Central and South America countries. Nowadays, Orengine group works with the same method, that's to say collaborating with many partners located in foreign countries and in various geographical areas.
