MIT Scientists Find Way to +++ Energy Output

Posting this for my METaR friends who follow the renewable energy sector. I’m not sure if this Boston Globe article is behind a paywall. Here are some snippets:

After testing complicated computer models, they’ve shown that adjusting the rotor blades of turbines at a wind farm — a change that would reduce the efficiency of an individual turbine if it stood alone — can significantly increase the overall power produced by the wind farm.

Typically, wind farm operators focus on achieving the maximum efficiency of individual turbines. Each turbine has its own sensors that measure the direction and speed of the wind, enabling their blades to rotate as close to the wind as possible and capture the maximum amount of energy.

But now scientists have found that, actually, they would be better off orienting the blades of some turbines at a sub-optimal angle to the wind, so each turbine generates slightly less bumpy air, known as a turbulent wake, for turbines downwind. Changing the angle of the blades reduces how much a turbine disturbs the flow of air to those behind it, ultimately increasing their collective output.

If existing wind farms around the world used this method, which the scientists published this month in the journal Nature Energy, the additional electricity could together power the equivalent of 3 million homes in the United States and generate nearly a billion dollars in additional revenue each year for the industry, they said.

https://www.bostonglobe.com/2022/08/19/science/mit-scientist…

The Boston Globe article referenced this Nature Energy publication → https://www.nature.com/articles/s41560-022-01085-8

The method that the scientists were able to demonstrate was to point the turbine nacelle at an approximate 20-degree angle from nearby turbines to provide for less impact of what is known as a turbulent wake. The solution requires no new hardware or relocation of existing turbines.

They have tested the new positioning algorithm on a wind farm in India and electric output was increased by 32% under optimal wind conditions. Overall, the increase over a longer period of time was measured at 1.2% increase - which, when applied to the number of turbines globally, could generate significantly more energy than previously thought.

Sounds like a no-brainer to me :wink:
‘38Packard

10 Likes

I love this as a metaphor for human society. Individuals operate sub-omptimally but the group increases total output.

Wwendy

2 Likes

Overall, the increase over a longer period of time was measured at 1.2% increase…

I’m not sure that a 1% increase qualifies as a +++output.

DB2

In aviation, the wings create wake turbulence that can crash following airplanes

Section 4. Wake Turbulence

General
a. Every aircraft generates wake turbulence while in flight. Wake turbulence is a function of an aircraft producing lift, resulting in the formation of two counter-rotating vortices trailing behind the aircraft.

b. Wake turbulence from the generating aircraft can affect encountering aircraft due to the strength, duration, and direction of the vortices. Wake turbulence can impose rolling moments exceeding the roll-control authority of encountering aircraft, causing possible injury to occupants and damage to aircraft. Pilots should always be aware of the possibility of a wake turbulence encounter when flying through the wake of another aircraft, and adjust the flight path accordingly.

https://www.faa.gov/air_traffic/publications/atpubs/aim_html…

Turbine blades act similarly. When you hear the pilots saying “heavy” it’s big planes creating huge turbulence.

When is Turbulence DANGEROUS?!
https://www.youtube.com/watch?v=EuLURmITq_E&t=645s

The Captain

DB2,

I’m not sure that a 1% increase qualifies as a +++output.

Sorry if the title of the post was misleading. Unfortunately, TMF only allows so many characters in the title and when I originally had the word “Increase” in the title, it was too long. I changed it to +++ just for brevity.

'38Packard

  • and it was 1.2% :wink:

Using Wake turbulence while cycling is called “drafting”.

https://www.liv-cycling.com/global/campaigns/how-to-draft-on….

I was on a motorcycle with a wind fairing (a medium sized windshield).
https://www.revzilla.com/motorcycle/memphis-shades-batwing-f…

I pulled up behind a semi trailor, the “wake turbulence” caught the fairing and sucked me up to about 2m from the truck rear end. I was NOT using any gas/fuel to stay there. The truck was sucking me down the highway at 70mph and all I could see was his bumper. Getting out of the wake turbulence… was unnerving.

:alien:
ralph

1 Like

Unfortunately, TMF only allows so many characters in the title and when I originally had the word “Increase” in the title, it was too long. I changed it to +++ just for brevity.

You could have left out ‘MIT’. :slight_smile:

DB2
A Caltech fan

1 Like

Thank you

Hey DB2,

You could have left out ‘MIT’. :slight_smile:

I’m a Ma$$hole - so I’m an MIT fan and I’m OK with you being a Caltech fan.

https://discussion.fool.com/colleges-ranked-by-10th-year-salary-…

https://www3.forbes.com/leadership/colleges-with-highest-sal…

#1 Massachusetts Institute of Technology
Cambridge, MA
Mid-Career Earnings: $110,200

#7 California Institute of Technology
Pasadena, CA
Mid-Career Earnings: $100,100

Just sayin’ :wink:
'38Packard

You could have left out ‘MIT’. :slight_smile:

No way I have a nephew graduated there.
A sister working there. Her husband working there as well.

MIT rules!!