Wind turbines could offer a double whammy in the fight against climate change.
In addition to harnessing the wind to generate clean energy, turbines help to funnel carbon dioxide into systems that draw greenhouse gases from the atmosphere (SN: 8/10/21). The researchers say their simulations show that wind turbines can drag dirty air over a city or drag in smoky tornadoes. That boosts the amount of CO2 which he does to the machines which can be removed from the air. The researchers plan to describe their simulations and wind tunnel test of the scaled-down system at a meeting of the Division of Fluid Dynamics of the American Physical Society in Indianapolis on November 21.
Addressing climate change will require dramatic reductions in the amount of carbon dioxide that humans put into the air — but that alone will not be enough (SN: 3/10/22). One part of the solution may be direct air capture systems that remove some CO2 from the atmosphere (SN: 9/9/22).
But a large amount of CO2 the products of factories, plants, and cities are often piled up at heights that can be removed by remote machines on the ground. “We’re looking at the fluid dynamics benefits of using wind turbine cases to redirect higher concentrations” to carbon capture systems, says mechanical engineer Clarice Nelson of Purdue University in West Lafayette, Ind.
When large, power-generating wind turbines rotate, they create turbulence that stirs up the air behind them, says mechanical engineer Luciano Castello, also of Purdue. It is an effect that can concentrate carbon dioxide enough to be feasible, especially in large cities like Chicago.
“What is beauty” [around Chicago], you have the best wind resources in the country, so you can use the wind turbine to take the dirty air in the city and capture it,” said Castello. Wind turbines do not require the cooling of nuclear and fossil fuel plants. “Then you not only force cleanliness,” he says, “you do not use water.”
Running captive systems from the power of wind turbines produced, even to the economic burden, which often continues, removing CO . can approach2 out of the air “Even with tax credits and the potential to sell CO”2there’s a huge gap between the value you can capture and the actual cost” that comes from capturing energy from other sources, Nelson says. “Our approach would be no cost of added utility” for wind turbine farms.
There are probably many factors that influence CO2 Real-world turbines involve interactions with water, plants and land, says Nicholas Hamilton, a mechanical engineer at the National Renewable Energy Laboratory in Orange, Colo., who was not involved in the new studies. “I’m interested to see how this group went about their experiment to explore the wind tunnel.”
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