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Energy Business Review | Monday, September 26, 2022
Wind power is a good way to generate clean, renewable energy.
Fremont, CA: Our economy has an insatiable appetite for energy, and because of the negative side effects of fossil fuels, the quicker we can supplement and/or replace petroleum-based power sources, the better. Wind power is a good way to generate clean, renewable energy.
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The innovations in wind technology being followed over the last year remind us that with the right tools, we can change the movement of the air above us into fuel for our energy-hungry living.
1. Power from Low-Speed Winds:
Wind Harvester: The new Wind Harvester is according to a reciprocating motion that employs horizontal aerofoils similar to those used on airplanes. It is virtually noise-free and can produce electricity at a low speed, which may affect outcomes in less opposition to new installations. It will also be operational at greater wind speeds than present wind turbines.
2. Airborne Wind Turbines:
Makani Airborne Wind Turbine: The Makani AWT(Airborne Wind Turbine) can approach stronger and more consistent wind at altitudes near 1,000 feet, which means that 85% of the US could have viable wind resources utilizing the device (compared to just 15% using current turbine technology). The Makani turbine could also be utilized in deep offshore waters, giving access to a renewable energy resource four times higher than the entire country's electrical generation capacity.
Altaeros Airborne Wind Turbine: The Altaeros device employs a helium-filled, inflatable shell to allow it to ascend to high altitudes, which gives it access to stronger and more consistent winds than tower-mounted turbines, and the generated power is sent to the ground via ropes. The company says their product could decrease energy costs by up to 65% by harnessing those high-altitude winds, and due to the unique design, installation time can be reduced from weeks to days.
3. Bladeless Wind Power:
Windstalk: Within every hollow pole is a stack of piezoelectric ceramic discs. Between the ceramic disks are electrodes. All other electrodes are connected by a cable reaching from the top to the bottom of each pole. One cable links the even electrodes, and another connects the odd ones. When the wind influences the poles, the stack of piezoelectric disks is forced into compression, generating a current through the electrodes.
4. Wind Turbine Lenses:
Wind Lens: Japanese researchers say they've discovered a simple way to make wind turbines up to three times as efficient. By positioning a 'wind lens' around the turbine blades, they claim wind power could become cheaper than nuclear power.
5. Vertical Axis Turbines:
Windspire: The standard Windspire is 30 feet tall and 4 feet wide, designed to come in under local municipalities' typical 35-foot height restrictions. The vertical axis design tested sound levels at 6 decibels above ambient, rendering it virtually inaudible. The 1.2kW Windspire installed at the farm will produce almost 2000 kilowatt hours per year in 11 mph average wind.
Eddy Turbine: The eddy turbine has a sleek design and is safe in the wind, speeding up to 120 mph. Its cut-in airspeed is 3.5 meters per second, and its cut-out speed is 30 meters per second. This specific turbine can generate 600 watts and is designed to be combined with a solar array as a little increase of energy from the breeze.
6. Quiet Wind Turbines:
Eco Whisper Turbine: Need wind power, but think those tri-bladed behemoths are too loud? Well then, Australia Renewable Energy Solutions has simply the thing for you: The Eco Whisper wind turbine. This sharp-looking little contraption may merely have a 20 kW generating capacity, but the company claims the turbine is "virtually silent." It's also, allegedly, more efficient.
7. Wind Power Storage:
Manmade Island Wind Battery Notion: The Green Power Island uses pumped hydro, a storage strategy already in wide use. Traditional pumped hydro systems use vertically separated reservoirs to employ the power of water and gravity; during times of low demand (off-peak), water is pumped using excess energy from the lower to the upper reservoir. Then, as demand rises, the water is granted to flow downhill into the lower reservoir, generating electricity in the process.
8. Community-Owned Wind Power:
Baywind Energy Cooperative: Constructed in 1996, the wind farm was the initial community-owned wind installation in the UK and generates around 10,000MWh of electricity each year—enough to power around 30,000 homes. In addition to providing income and clean energy for its members, the initiative also channels funds into educational visits and environmental books for local schools.
9. Multipurpose Offshore Wind Turbines:
Seaweed Farms: A Dutch company, Ecofys, is conducting a project that, if the entire crazy scheme pans out, would turn offshore wind farms into real farms. The company believes seaweed might be cultivated around offshore wind turbines and gathered "for the production of fish and animal feed, biofuels and energy."
Wind technology is spring ahead all the time. While some of these innovations are just notions, others are either in prototype or testing phases and could enter the energy market shortly. From offshore wind and residential turbines to community-owned turbines, these improvements in wind power are thrilling news for the future of renewable energy.
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