Bjbj Take the natural heat from the sun, reflect it against a mirror, focus all of that heat on one area, send it through a power system, and you've got a renewable way of making electricity. It's called concentrating solar power, or CSP. Now, there are many types of CSP technologies. Towers, dishes, linear mirrors, and troughs. Have a look at this parabolic trough system. Parabolic troughs are large mirrors shaped like a giant U. These troughs are connected together in long lines and will track the sun throughout the day. When the sun's heat.
Is reflected off the mirror, the curved shape sends most of that reflected heat onto a receiver. The receiver tube is filled a fluid. It could be oil, molten salt something that holds the heat well. Basically, this super hot liquid heats water in this thing called a heat exchanger and the water turns to steam. The steam is sent off to a turbine, and from there, it's business as usual inside a power plant. A steam turbine spins a generator and the generator makes electricity. Once the fluid transfers it heat, it's recycled and used over and over.
And the steam is also cooled, condensed and recycled again and again. One big advantage of these trough systems is that the heated fluid can be stored and used later to keep making electricity when the sun isn't shining. Sunny skies and hot temperatures make the southwest U.S. an ideal place for these kinds of power plants. Many concentrated solar power plants could be built within the next several years. And a single plant can generate 250 megawatts or more, which is enough to power about 90,000 homes. That's a lot of electricity.
Energy Electricity in Science How Does Solar Energy Work
Hi, I'm Steve Jones, and I'm going to explain how solar energy works. Now, solar means sun, so we know that the energy is coming from the sun, and we might think it comes as heat or whatever. In fact, we get all kinds of energy from the sun, but it is all radiation. Remember, outside the earth there is no atmosphere so nothing physically moves from the sun to us it is radiation. So, radiation from the sun which might be ultraviolet, it might be xradiation. It might even be infrared radiation which is heat radiation, or even radar very,.
Very like radio waves, so all kinds of radiation comes from the sun. Some kinds of radiation when they hit the surface of a silicon chip that is a thin slice of silicon crystal it sets up a voltage between the ends, so you get a voltage between the sides of the chip, and that voltage will produce a current. Now, this is quite small so you need quite a big silicon chip, or a lot of silicon chips. And when you look at a solar array as they call it you will see it is made up of lots and lots of small silicon plates. Each of them.
Produces a small current. Those currents are combined, and they can provide enough current to drive a household circuit set of circuitry up to about three thousand watts with a standard panel about one meter by one meter. So, solar energy, which is free of course, is available providing we can produce the silicon chips. The silicon chips are very expensive to produce, so although this energy is free the solar panels which are made to harness that energy are expensive. So, it works, but it only works as well as how much money you're prepared.
Journey to the heart of Energy How a solar power plant works
Solar power plants generate electricity using sunlight, a free and abundant renewable energy source. Photovoltaic panels are the basic building blocks of solar power plants. They can be installed on the roof of a home or grouped into vast arrays. Each panel consists of several solar cells less than a millimeter thick. These cells contain a semiconducting material that releases electrons when photons, the particles that make up light waves, crash into it. Extremely fine metal wires carry electrons to the negative terminal of the cell. They then follow an external circuit.
That leads to the cell's positive terminal. The resulting flow of electrons is the source of the electric current. The current passes from cell to cell, panel to panel, combining with the currents from all other cells along the way and flowing into the inverter which transforms the direct current into an alternating current which feeds into a substation that boosts its voltage to between 225,000 and 400,000 volts. Thus modified, the current is easy to transmit over the power grid's high voltage lines. Regular maintenance and inspection ensure that solar plants remain fully operational.
How Solar Energy Is Converted To Electricity Through Solar Panels
Sunlight is made up of tiny packets of energy, called photons. Every minute, enough of this energy reaches the earth to meet the world's energy demand for a whole year. Photovoltaic panels consists of many solar cells, these are materials made like silicon, one of the most common elements on earth. The individual cell is designed with a positive and a negative layer to create an electric field, just like in the battery. As photons are absorb in the cell, their energy causes electrons to come free. The electrons move towards the bottom of the cell, and exit through the connecting wire. This flow of.
Why Teslas Powerwall Battery Is Amazing
All of humanity just won a really important victory in our battle to lower the CO2 emissions that are causing climate change. Tesla CEO Elon Musk introduced the world to the Powerwall, a wallmounted battery for your house which aims to accelerate our transition to clean solar and windpower. Before the powerwall, there was no way to store the energy generated from the panels that capture sunlight on our roofs. So during the day they could give you the power you needed, but at night, you had to rely on the grid, which gets most of its.
Electricity from coal, natural gas, and nuclear reactors. There had been some early home batteries out there, but nothing that was nearly this affordable. But Tesla, which has built thousands of large, lithiumion battery packs for its growing electric car business, was able to produce a similar battery for buildings at a scale that dropped the production costs dramatically. The lowest capacity model will cost just $3,000. And this is the first generation of the productbefore Tesla's even completed building its massive new Gigafactory, or any real competitors have entered the market, events that will surely push the price down.
Even further, while increasing the energy storage capacity of the Powerwall. Here's how it works. When the sun is out, solar panels will power your house and charge the Powerwall at the same time. And when the sun goes down, this charged battery will kick in to meet most or all of your electricity needs until the sun comes back up again the next morning. This is gamechanging. More and more people will go completely offgrid. Every building whether it's a home, office, business, warehouse, factory they can all.
Install solar panels and some Powerwalls and instantly see their fossil fuelgenerated electricity needs drop significantly. Not every building will be able to go completely solarpowered, but most will get pretty close, especially as our appliances become more and more energy efficient. And it gets even better. The powerwall will be connected to the Internet and the rest of the energy grid. Here in Southern California, and most other heavily populated places, the electricity company charges us a lot more when we use electricity during peak timethat's in the afternoon and early evening when the temperatures are warmest and most of us are.
Home and still awake. The Tesla battery is smart, and knows when electricity is cheapest, so that's when it will draw from the grid to charge itself. And then, during peak time when you need electricity, the battery will power the house. Sometimes, you'll be able to sell back unused power to the utility company during peak time to even make a profit. It's basically going to make each individual building its own power station. Overnight, Tesla seems less a futuristic car company, and more like the man who inspired the company's name, a revolutionary electricity engineer named Nikola.
Thanks for watching. If you liked this tutorial, help the conversation spread by hitting that thumbs up button. For TDC, I'm Bryce Plank. on the screen to watch more TDC, like our tutorial running down ten possible clean energy sources of the future or the ten fastest electric cars on the road. You can click to go back on our channel or take us up on our offer for a free audiobook of your choice from Audible, like the soontobereleased profile of Elon Musk. You have to put your credit card number in, but you get to try the service without charge for a whole month,.
Burning Stuff With 2000F Solar Power!!
In a previous project I found a free tv and turned it into a giant solar scorcher. This shoots out a deadly beam of sunlight, that's hot enough to abuse food, melt metal and burn things you probably shouldn't. Today seemed like a good day to play with my Solar Scorcher. I positioned my frame and found the focal point, then added some concrete tiles as a base for my projects. Ok, I've got power, and I'll test it out with this piece of wood and when the light makes contact.
I've got instant fire. The sunlight at this spot is around 2000 degrees Fahrenheit, enough to melt this spot of concrete into a glowing orange liquid. I'm curious to see what I can do with all this heat so I've filled a glass bottle with water and I'll punch a hole in the cap. It's incredible to see that the instant I focus my lens on the bottle, it starts smoking. Just a few moments later this water is so hot it's boiling, and I'm a little nervous the bottle might blow. Yep, there it goes. The glass pieces are melting and that's cool,.
But now I want to try this on some food. I'll get some hot dogs, and when they hit the beam they really do get hot. This might be a little well done for my taste, and I'm still hungry so let's try an egg. The egg is actually working very well. It's so reflective it doesn't burn as fast, and even my wife is interested. A little salt and pepper and it's tempting to try a bite. Ok, so I wasn't actually expecting to eat this, but it looks safe enough, and.
Even my kids are anxious to try. Surprisingly, it's pretty good. Alright, let's see what else this will do. I'll try burning a penny, and, wow, it melted. How about a stack of pennies Yep, they're nothing but liquid metal now, and I'm thinking that slag in the mixture must be what's left of the copper coating. It's only taking about 4 seconds to melt these, and melting metal is really great, but now I want to see something burst. I wonder what would happen to this egg It's spewing some kind of debris and smoking like crazy. I hear.
Some little pops and it's even forming some interesting growths. huh, Look at that. But no explosion. How about if I put a pop top on this bottle of water and let the pressure build up Yeah, that's what I'm looking for. Let's do that again. The lid is back on, and pressure is building. Awesome! Alright, the sun is setting and I've readjusted my Aframe. I'm just wondering if this would ignite gasoline. It does. Hopefully it goes without saying that this is very dangerous and you shouldn't try this at home. Well, I'm convinced there's.
An insane amount of power behind these lenses. If you'd like to see where I got this one, take a look at my tutorial on how I hacked it out of an old TV. This one boiled water in less than a minute, welded a nickel to concrete, and instantly torched any piece of wood in it's way. Well that was fun, but I'm still hungry so I'll put everything away and go get some real home cooking. That's it for now. If you liked this project, perhaps you'll like some of my others. Check them out at thekingofrandom.
Clean Energy Made Easy with SolarCity See How Solar Energy Works
More homeowners have partnered with SolarCity than any other solar provider. In fact, every five minutes someone switches to cleaner, more affordable energy with SolarCity. From the experience of installing tens of thousands of solar systems, our team of clean energy professionals has created the most sophisticated project management system in the industry. We plan and supervise your project to ensure sure your switch to clean power is quick and easy. Our consultants start by using our proprietary software to analyze your current energy bill and recommend a solar plan that will lock in a more affordable energy rate for years.
To come. From the get go you can trust our customer care team to map out your installation, coordinate with all the team members involved and take care of all necessary permits and inspections. You'll even receive a personal SolarCity web portal where you can track project status from your smartphone or computer at any time. One of our site auditors will visit your home to take measurements and gather technical information. They carefully evaluate the specifics of your home to ensure the final product will match your energy and esthetic needs. Our best in class inhouse engineering team will.
Then use that information to custom design your system. We take care to design a system using SolarCity sleep mount that will last for decades to come. Once complete we submit the plans for the local permit and your HOA approvals. SolarCity's team has extensive experience and best practices that we apply towards installing your system. A typical installation takes one to three days. All installers go through rigorous training and background checks and follow procedures and quality requirements that ensure your system will stand the test of time. After the system's installed, we'll schedule inspections with your local building department and implement.
Energy 101 Solar PV
MR. All right, we all know that the sun's energy creates heat and light. But it can also be converted to make electricity, and lots of it. One technology is called solar photovoltaics or PV for short. You've probably seen PV panels around for years, but recent advancements have greatly improved their efficiency and electrical output. Enough energy from the sun hits the earth every hour to power the planet for an entire year. Here's how it works. You see, sunlight is made up of tiny packets of energy called photons.
These photons radiate out from the sun, and about 93 million miles later, they collide with a semiconductor on a solar panel here on Earth. It all happens at the speed of light. Take a closer look, and you can see the panel is made up of several individual cells, each with a positive and a negative layer, which create an electric field. It works something like a battery. So the photons strike the cell, and their energy frees some electrons in the semiconductor material. The electrons create an electric current, which is harnessed.
By wires connected to the positive and negative sides of the cell. The electricity created is multiplied by the number of cells in each panel and the number of panels in each solar array. Combined, a solar array can make a lot of electricity for your home or business. This rooftop solar array powers this home, and the array on top of this warehouse creates enough electricity for about a thousand homes. OK, there are some obvious advantages to solar PV technology. It produces clean energy. It has no emissions, no moving parts, it doesn't make any noise and it doesn't need water.
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