Voting resources, early voting, and poll worker information - VOTE. ... Adafruit is open and shipping.
0

Small Turbines Can Outperform Conventional Wind Farms #Biohacking #Biomimicry

Interesting read via Forbes

Decades ago, engineers largely dismissed vertical-axis wind turbines—which spin around a central axis like a top—because they could not match the efficiency of the propeller-like turbines common today.

But researchers have found recently that clusters of vertical-axis turbines, arranged to take advantage of each other’s turbulence, can outperform conventional wind farms. When added to conventional farms, according to a study published this month, they can even increase the older turbines’ output.

“We’re able to get significantly higher performance,” said Stanford Professor John Dabiri, “both due to the fact that you can put the turbines closer together, but also in putting the turbines together we improve the performance of the individual turbines.”

Dabiri works with vertical-axis turbines that are 10 meters tall, compared to 100 meters for a conventional horizontal-axis turbine. He arranges the small turbines the way schooling fish arrange themselves, so that the turbulence created by each fish aids, rather than hinders, the progress of the fish beside it and behind it.

Even a dead fish, placed in such a school, will move forward, propelled by the turbulence of the group.

“They’ve been able to optimize their movement in interaction with their neighbors so that the group is a more efficient system flowing through the water,” Dabiri said.

The hydrodynamics of schooling fish have been applied to wind energy before, and wind-farm operators like General Electric and Berkshire Hathaway Energy have used those insights to improve the placement of conventional turbines. But Dabiri and his team have shown that arrays of much smaller vertical-axis turbines can outperform these conventional wind farms because they respond to turbulence much better.

“I would note that they’re still doing this using conventional horizontal wind turbines. Even in these systems you can see benefits. It’s going to be something on the order of 5-20 percent, which is actually huge if you’re talking about a 300 MW wind farm project, but the thing that we are excited about is that in the vertical-axis turbine approach to this problem it can be factors of 3 and 4 and 5.”

Turbulence is bad for conventional turbines, not only reducing their efficiency, but also their lifespan. As a result, they are typically spaced far apart, and the wind that passes between them, according to Dabiri, is “wasted energy.”

Small vertical-axis turbines placed in those open spaces can capture that wind and reduce turbulence for the conventional windmills around them.

Read more



Adafruit has had paid day off for voting for our team for years, if you need help getting that going for your organization, let us know – we can share how and why we did this as well as the good results. Here are some resources for voting by mail, voting in person, and some NY resources for our NY based teams as well. If there are additional resources to add, please let us know – adafruit.com/vote

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 24,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Rub’n’buff

Electronics — Multimeter Bandwidth – AC Signal

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 6 Release Candidate, new hardware & more! #Python #Adafruit #CircuitPython #ElectronicHalloween @micropython @ThePSF

Adafruit IoT Monthly — Matrix Portal, Solar Lawn Sprinkler and more!

Microsoft MakeCode — micro:bit version 2 Announced!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — NEW PRODUCT – Nylon Fabric Squares with Conductive Adhesive – 10cm x 10cm – 3 pack

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.