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Does small wind energy or backyard wind turbines make sense? Why do we see so much rooftop solar, but so little rooftop wind?
Bookmarks
00:00 Intro – Rooftop solar’s domination in the urban renewables sector
00:38 Why don’t we see more rooftop wind turbines?
01:38 Quality of solar resources – Solar irradiation in different places around the world
02:40 Quality of wind resources – Urban wind effects, wind shear effects, available power in wind
04:53 Available wind power in Kolding vs Canberra
05:40 Other points of comparison – Benefits gained from a rural location, noise and vibration issues, maintenance required
07:47 Applications for urban wind technologies – Off-grid properties, high-wind speed locations, rural farms, non-utility and aesthetic purposes, backyard engineering or DIY
09:54 Outro
10:11 Thanks to Brilliant for sponsoring this video!
In this video I’ll take you through the science and engineering reasons why rooftop solar is much easier than small wind, and show that the same wind turbine on a roof is likely to generate *less than 10%* of the energy a turbine of the same size would generate in a nearby wind farm.
And, because I know most of you found this video because you already know you want to do a DIY wind energy project (they’re fun!) or have an off-grid project that needs wind energy to diversify your energy, I have included some resources (Hugh Piggott’s great books on DIY wind energy and certified small wind turbines if you want to buy one).
Thanks to Brilliant for sponsoring this video! They are offering 20% annual subscriptions for the first 200 viewers to sign up at https://Brilliant.org/EngineeringwithRosie
Resources:
Firstlinks – Eraring Power Station
https://www.firstlinks.com.au/eraring-power-station-closure
OpenNEM
https://opennem.org.au
Weather and Climate – Monthly Sunhours
https://weather-and-climate.com
Global Solar Atlas
https://globalsolaratlas.info
Global Wind Atlas
https://globalwindatlas.info
My video on the gingerbread wind turbine projec
Micallef and Brussel, 2018 – Urban Wind
DOI: 10.3390/en11092204
Salazar et al, 2016 – Wind Shear
DOI: 10.3390/s17010008
If you would like to help develop the Engineering with Rosie channel, you could consider joining the Patreon community, where there is a chat community (and Patreon-only Discord server) about topics covered in the videos and suggestions for future videos and production quality improvements. https://www.patreon.com/engineeringwithrosie
As technology advances, we are gradually meeting our energy needs through alternative sources. However, solar and wind power have a major drawback: they depend on the weather conditions. If there is no wind or sun, the energy output is reduced. To overcome this challenge, we can use a more reliable and predictable source: the tides. We have been able to forecast the tidal patterns for centuries, so we can use tidal energy systems to generate consistent and renewable power. Tidal power can be as simple as installing underwater windmills. In this article, we will explore this new form of green energy and its potential applications.
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00:00 Intro
00:29 What Is Tidal Energy
01:42 How Tides Work
03:51 Tidal Streams
05:37 Mainstream Use
07:20 Final Words
At just 40% efficiency, wind energy is by far the most efficient source of renewable energy on the mainstream market. Solar panels max out at around 20 to 22%, and the other 80% of the energy goes to waste. A new renewable energy source, however, guarantees an efficiency of over 80% and utilizes the moon’s gravity to generate electricity. If you haven’t guessed it by now, ladies and gentlemen, we’re talking about tidal energy.
What is tidal energy, how does it work, and most importantly, when are we going to see it on the market?
As the name suggests, tidal energy is the energy that we get from tides. Tides are incredibly powerful, and we can calculate their properties with astonishing amounts of accuracy. This isn’t anything new: humans have been doing it for over 2000 years. Knowing when the tides will rise is a much bigger deal than you might think.
You see, one of the biggest issues with solar and wind energy is the fact that we can’t predict when they’ll be at their peak. They’re not reliable. Sure, the amount of energy that can be produced is huge, but we can’t shift our entire energy framework so that it is based on sources that come and go unpredictably. Sure, we can store excess energy from wind and solar farms in batteries and then use it later, but as we’ve already mentioned in our previous videos, doing this at an international or even just a nationwide level just isn’t possible at this time. This means that our only option is to shift to a power source that is clean, renewable, and most importantly, reliable.
This is where tides and their relative reliability come into play.
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Did you know that we can create electricity using the wind? Caitie takes us to a Wind Farm where we get to see just how the wind turbines spin and why this renewable resource is so important for having clean air to breathe and clean land to live on.
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CBSE Class 10 Science – Sources of Energy – Air flows from high pressure zone to low pressure zone. Wind Energy is used to produce electricity using the Wind mills. India ranks 5th in the electricity generation from wind energy in the world.
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Harnessing the Power of Wind Creating Efficient Turbine Generators
In this video, we’ll be discussing the harnessing of the power of wind to create efficient turbine generators. By understanding the principles behind wind power generation, we can create more efficient and sustainable systems that help us meet our energy needs in the future.
This video is a great way to learn about the harnessing of the power of wind and how it can be used to create efficient turbine generators. By the end of the video, you’ll have a better understanding of how wind power works and how it can be used to create sustainable systems. Video Rating: / 5
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Are wind farms just another big scam, like man-made global warming?
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Rooftop wind power has been a goal for micro power generators around the world for many years now. There’s no shortage of design ideas, but now there’s a new kid on the block that has no visible moving parts, makes no noise, and generates 50% more power than standard solar PV panels. So how do they do that?
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Offshore wind farms solve one of renewable energy’s biggest problems: unreliability. With wind almost always blowing on sea, there is no lack of power. But the technology is struggling with a bunch of other hurdles.
We’re destroying our environment at an alarming rate. But it doesn’t need to be this way. Our new channel Planet A explores the shift towards an eco-friendly world — and challenges our ideas about what dealing with climate change means. We look at the big and the small: What we can do and how the system needs to change. Every Friday we’ll take a truly global look at how to get us out of this mess.
#PlanetA #Offshore #Energy
Study: Levelized cost of renewable energy technologies: https://www.ise.fraunhofer.de/en/publications/studies/cost-of-electricity.html
Environmental impacts of offshore wind farms in the belgian north sea: https://odnature.naturalsciences.be/downloads/mumm/windfarms/winmon_report_2020_final.pdf
Offshore wind farms in Germany:
http://www.offshore-stiftung.de/status-quo-offshore-windenergie, https://www.cleanenergywire.org/factsheets/german-onshore-wind-power-output-business-and-perspectives
Different offshore wind farm concepts:
https://acee.princeton.edu/wp-content/uploads/2019/04/AndlingerDistillate_Article7.pdf
0:00 Intro
0:43 Advantages offshore wind energy
3:54 The grid problem
5:28 Expensive offshore wind
7:38 The space problem
9:03 Environmental concerns
12:18 Floating Windfarms
13:01 Conclusion
Report: Kai Steinecke (IG: https://www.instagram.com/supersteinii/)
Kamera: Henning Goll
Video Editor: David Jacobi
Supervising Editor: Joanna Gottschalk Video Rating: / 5
Building solar farms and wind parks is one thing. Plugging them into the grid is another. How does our power system need to change to cope with more renewables?
Credits:
Reporter: Malte Rohwer-Kahlmann
Video Editor: Frederik Willmann
Supervising Editor: Joanna Gottschalk, Michael Trobridge, Kiyo Dörrer
We’re destroying our environment at an alarming rate. But it doesn’t need to be this way. Our new channel Planet A explores the shift towards an eco-friendly world — and challenges our ideas about what dealing with climate change means. We look at the big and the small: What we can do and how the system needs to change. Every Friday we’ll take a truly global look at how to get us out of this mess.
#PlanetA #RenewableEnergy #Grid
Read More:
Integrating Renewable Energy Resources into the Grid:
https://www.rff.org/publications/explainers/renewables-101-integrating-renewables/
Energy Transitions Commissions report:
https://www.energy-transitions.org/publications/financing-the-transition-etc/
Where wind power is harnessed (U.S.):
https://www.eia.gov/energyexplained/wind/where-wind-power-is-harnessed.php#:~:text=Favorable%20sites%20include%20the%20tops,high%20as%20900%20feet%20tall.
Report on Grid-Scale Storage:
https://www.iea.org/reports/grid-scale-storage
Chapters:
00:00 Intro
01:13 How the grid works
02:43 More renewables, more problems
05:37 How the grid was built
07:00 What needs to happen
10:47 Conclusion
