Rooftop solar is considered one of Australia’s renewable energy success stories.
But an audit of the clean energy regulator has found there are potentially tens of thousands of badly installed and even unsafe systems on rooftops.
Some experts even believe Australia has become a dumping ground for poor quality solar products.
Liz Hobday takes a look at the big picture, including how effectively, or otherwise, solar is helping Australia meet its clean energy targets.
Read more here: https://www.abc.net.au/news/2019-05-27/australias-obsession-with-cheap-solar-derailing-market-insiders/11139856
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Free Solar Energy Fan With Mirror Glass Video Rating: / 5
In this video I’m going to show you ” How To Make a Solar Power Project ” this project is based on Eco Friendly, Go Green and Save Nature.
This method is very simple and for everyone, even you are a beginner or school going student who wants to innovate something new or for your educational project. This will be the ideal project for you.
Requirement in This Projects :
6v DC Motor
3W Solar Panel
Led Light
Switch
Connecting Wire
Fan Blade / Fan Propeller
Glue Gun with Glue
Soldering Iron …etc…
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Solar Power Related My Videos :-
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Solar Powered DC Fan
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The Florida Power & Light utility plans to unveil “Solar Together,” a subscription program giving customers access to solar-sourced power without need of equipment
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CBSE Class 10 Science – Sources of Energy – Solar energy is collectively the Visible rays, Infrared rays and small amount of ultraviolet radiations. Solar energy can be harnessed in two ways – Indirect Method and Direct Method.
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The 50 Countries That Produce the Most Solar Energy.
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In a world exhausted of fossil fuels, solar panels can provide a sustainable solution to our energy problems. But they also come with a couple of issues: for one, solar farms are massive, and they have to be set up somewhere that gets a lot of sunlight.
Now, if only we had a large mass of unused land that gets guaranteed sunlight everyday… Could we cover an entire desert in solar panels? Would that be enough to power the entire world? What kind of problems could we run into?
Transcript and sources: https://insh.world/tech/what-if-we-covered-the-entire-sahara-desert-with-solar-panels/
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Rise. and. shine! Get up and seize the day! You can do anything under the sun…when the sun powers everything. Your phone, your home, and all that’s in between. This is life on the golden grid. But is it the utopia we thought it would be? In 2018, the state of California passed a law requiring all new houses to be built with solar panels after 2020. Now you might think that sounds both extreme and unfair, considering it will raise home prices by as much as ,000. But it’s a lot more sensible than you think.
Transcript and sources: https://insh.world/science/what-if-all-houses-were-covered-with-solar-panels/
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Technology: https://www.youtube.com/watch?v=CS3bBO05fpU&list=PLZdXRHYAVxTIeRY3JtgXgoGqSEB7kDdKO
Your Body: https://www.youtube.com/watch?v=QmXR46TrbA8&list=PLZdXRHYAVxTJNsV9FFeNAKl2ySsHj8GZO
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“Imagination will often carry us to worlds that never were. But without it, we go nowhere.” — Carl Sagan
What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.
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SOLAR ENERGY – 5 REASONS why it won’t solve Global Warming [2019]
Why we NEED to rethink SOLAR ENERGY – About two years ago Elon Musk made a claimed that the number of solar panels that we would need was a blue square on a map.
There was no further information as to the area that he was referring to, so in this video I will show and how that is not possible by extrapolating things a little bit.
Slowly we are realizing that Solar can only contribute to a small part of what we need to achieve in the near future.
Here is the what we have to consider, and it will always be a problem. Solar panels are dependent on weather. Depending on where you are located on earth, the amount of sunlight available will differ, but what most people don’t know is that the solar energy available is actually less than sunlight hours.
This means that even though at the equator you would have about 16 hours of sunlight at the best time of the year, the actual hours that can be used with the Solar Panels is a bit less, or about 12 hours. (Need to verify this)
And the further away from the equator line you go in terms of latitude, the less Sun energy you will have available.
So, what does this translates to?
The best solar panels you can buy today has an optimal sunlight conversion in between 20% to 30% at best. To make calculations easier, we will use the 250 watts output.
The power per area unit of the sun is about 1kW/m2, but that varies through the year.
We can draw the solar panel efficiency throughout the day like this.
• Chart with solar panel efficiency throughout the day Rotating earth
• Next slide, solar panel angle
Next, what we have to consider is that for the panel to drawn the most energy possible, or to be the most efficient, the panel has to always be perpendicular to the sun however, in normal households, by putting panels on the roof tops, that is not viable, so in most houses the panels will never be flat facing the sun at all times.
Since most houses do not possess flat rooftops, you know what that means. The efficient drops throughout the day, which is ranges in between 5% and 15%.
As you can see, the solar panel will not be converting 250 watts all the time and at winter times, it drops significantly.
And all of this is to provide energy for you, only during the day if you don’t have any batteries to store the energy. Even if you buy a tesla power wall, the maximum number of hours that you will have available is about maybe 8 hours at best with one of them.
Yes, this is good for anyone going off-grid, but as you will see next, houses are only a tiny part of the problem.
NOTE: The animations in my videos take a substantial amount of time to make, so please be patient. I am trying to get a video per week, but some times it takes longer.
![SOLAR ENERGY - 5 REASONS why it won’t solve Global Warming [2019]](https://i.ytimg.com/vi/ATFardT71Rs/default.jpg)
