The D300 model has been designed specifically for being able to - - PDF document

Vertical axis wind turbine 300W Model D300 for air extraction solutions

Etneo Italia srl – via Giovanni Bovio n°6 28100 Novara – Tel +39 0321.697200 Fax: +39 0321.688515

The D300 model has been designed specifically for being able to offer solutions in cases of air extraction (air exhaust, air ventilation or similar). The wind turbine is only Darrieus system because we will never face the low wind in air extractions solutions, we always face with wind from 8 to 15mt/s. The bigger advantage of the air extraction is that those machines work almost every day and all year with constant wind, so we can count on a very constant and high energy generation. Here below some examples. If we consider a working air extraction system for 12 hours per day and 365 days per year: With constant wind speed of 10mt/s for 12 hours per day the turbine could generate 1,70 kwh (that are 51kwh/month and 612kwh/year). With constant wind speed of 12mt/s for 12 hours per day the turbine could generate 2,89 kwh (that are 86,7 kwh/month and 1040,4 kwh/year). With constant wind speed of 14mt/s for 12 hours per day the turbine could generate 4,34 kwh (that are 130,2 kwh/month and 1562,4 kwh/year). To be able to evaluate if our solution can be used for the air extraction machines we need to have some data: Dimensions of air ventilation out must be 1mt or little bit higher, but never smaller. Wind speed checked 60cm distance from the exhaust Machines working for at least 12 hours per day and 365 days per year.

Etneo Italia srl – via Giovanni Bovio n°6 28100 Novara – Tel +39 0321.697200 Fax: +39 0321.688515

Technical specifications Blades diameter: 1245mm Total width: 1143mm Number of blades: 3 Blades material: Aluminum Axis material: SS400 Cut-in wind speed: 5mt/s Rated wind speed: 13,5mt/s Cut-out wind speed: 15,5mt/s Weight: 30kg Generator type: Synchronism PMG Nominal power: 300W Braking system: 3-phase short circuit braking Manual braking system:

• ptional

Turbine draw

Power curve

Vertical axis wind turbine 300W Model D300 for air extraction solutions

Etneo Italia srl – via Giovanni Bovio n°6 28100 Novara – Tel +39 0321.697200 Fax: +39 0321.688515

A B

Vertical axis wind turbine 300W Model D300 for air extraction solutions

For a wind turbine the wind speed is the most important factor that characterizes its production capacity. The best situation for a turbine installation are in strong and constant wind sites. It is not always easy to find on the territory sites of this level, while it is easy to have high air speed and constant in the proximity of nozzles of extraction. Was tested and verified that the horizontal solutions Classic output of the jets do not give good results, the turbine D300 instead guarantees a lower pressure

• utlet air if it is installed outside the air vent, this

ensures energy recovery and energy production Example A air exiting from a nozzle of extraction, which collides with the wall of air in the environment. Example B air exiting from a nozzle extraction equipped with turbine D300, the air follows a movement more linear with reduction of the effort of the fan.

Etneo Italia srl – via Giovanni Bovio n°6 28100 Novara – Tel +39 0321.697200 Fax: +39 0321.688515

A good example of the turbine D300 is the use of 17 turbines located above extraction vents. At one of the most important companies in Taiwan manufacturer of liquid crystal display thin film (the AU Optronics Corp.. AUO) as well as one of the most active companies in terms of energy saving and pollution reduction, owner of Green certified and classified as Gold Lead . 17 turbines in operation 24 hours a day, 365 days uninterruptedly are able to generate more than 3,400 kWh per month avoided emission of 25 tons of CO ₂ per year.

Vertical axis wind turbine 300W Model D300 for air extraction solutions