- Why should I choose a Venger Wind Turbine?
Venger Wind Turbines which are technically considered twisted-savonius-vertical-axis-wind-turbines were designed to serve markets that horizontal axis turbines cannot. These markets are close to people and their environments, such as cities, neighbhorhoods, commercial buildings, industrial parks and military or civil installations.
The benefits of vertical axis turbines compaired to horizontal turbines include:
- Easy to install on buildings and towers without causing damage to structures, people and wildlife
- Very quiet due to lower rotation speeds
- Safer and better at capturing wind energy near and around buildings
- Constantly shifting or gusty winds do not effect our turbines unlike horizontal turbines
- Very elegant and pleasing to look at which adds value to the urban environment
- If you need to make a high impact green statement, Venger turbines are definitely the way to go
- The benefits of vertical axis turbines compaired to horizontal turbines include:
- Is it safe for wildlife?
The Venger Wind turbine is safe for our winged friends. It spins at lower speeds than horizontal turbines. It is a solid mass rather than a sharp blurring blade that a flying creature cannot see or detect.
- How much noise does the turbine make?
The Venger Wind turbine spins close to the wind speed at any given point, the sound emitted is similar to wind blowing around any stationary object such as a home or tree. Conventional wind turbines can spin 10 - 15 times faster than the wind speed which in turn causes the whistling or humming sounds.
- How long will your turbines last?
Depending on the environmental conditions in which your turbine is installed the Venger Wind turbines were designed for a 30 year life span.
- What average wind speeds do I need for this to make financial sense?
The recommended minimum wind speed is (5m/s - 18kph - 11mph). Your cost for electricity is an additional factor to consider. Ideally you will want to achieve a 7 – 10 year pay back period.
- How can I find out whether my location meets the minimum wind speed requirements?
An initial assessment can be conducted using wind speed databases, if they are available. A more accurate assessment can be conducted, if necessary, using anemometry and wind rose equipment.
- What is anemometry equipment?
An anemometer is a device for measuring wind speed, and is a common weather station instrument. The term is derived from the Greek word anemos, meaning wind, and is used to describe any airspeed measurement instrument used in meteorology or aerodynamics. Leon Battista Alberti around 1450 ACE gave the first known description of an anemometer. http://en.wikipedia.org/wiki/Anemometer
- What is a wind rose?
The wind rose is a graphic tool used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular location. Historically, wind roses were predecessors of the compass rose (found on maps). Using a polar coordinate system of gridding, the frequency of winds over a long time period is plotted by wind direction, with color bands showing wind ranges. The directions of the rose with the longest spoke show the wind direction with the greatest frequency. http://en.wikipedia.org/wiki/Wind_rose
- Where is the best location to install a Venger turbine?
Your turbines can be installed on a concrete foundation with a monopole up to 12 meters tall or on the roof of your building. We sell a full range of tower sizes or you can buy the towers locally through your distributor and installer.
Contrary to popular belief, It is not a good idea to install turbines on top of your home or building unless it is made from strucutral steel or solid concrete. When you think about it, this is a heavy spinning object on your roof for 20+ years and there is bound to be some vibration to occur over time especially in high wind and violent storm events. There are a lot of claims from many small turbine manufactures that having the turbine positioned right at the peak of your roof enhances or accelerates the wind and thus the performance of the turbine. This is simply not true. The roof of the house only creates turbulence and decreases the efficency and amount of power the wind turbine can produce. It is best to place the turbine above or away from your roof. Installing turbines on buildings is a tricky business and must be done carefully. We can help assess your location and best determine the proper location for you. We have over 6 years of experience doing this.
- Can I install your turbines on an existing building?
The Venger Wind Turbine can be installed on an existing roof, subject to suitable structure being present. Our engineers can provide structural load data to support your structural engineer in their design process.
- Can Venger Wind provide foundation designs?
Your structural engineer, distributor or installer can provide designs for ground-mounted turbines. Venger Wind will provide design guidelines to your structural engineer. Ultimately it is up to your local building authorities to approve a foundation design.
- How do I get pricing?
Complete our online contact form and a Venger Wind representative will contact you within 24 hours. We will gather all details about your site to determine if our system is a good fit for you and what the cost for installation might be. This information will be shared with a distributor or qualified installer within your area whom will then contact you with a proposal for your project.
- What type of permits or permissions do I need to install a Venger Wind turbine?
You will need to contact your local zoning or planning authorities for specific details on the requirements and planning process in your local area. For many new projects in industrialized countries, generating renewable energy is a requirement for development and planning approval.
- What type of warranties do you provide?
We offer a 5 year manufacturer's warranty on all parts. Extended warranties will be available through your distributor or installer. It is paramount to conduct the annual service and maintenance program in order to maintain the warranty.