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Solar Home Video

Solar powered air conditioning

Music playing Narrator Over 50 percent of the greenhouse gas emissions you produce in your home are generated by heating, air conditioning and hot water. In other words keeping your home warm in winter, cool in summer with nice hot water on tap is emitting 2.5 to 5 tonnes of greenhouse gas emissions each year. It also contributes a hefty amount to your electricity bill, between 50 to 60 percent. CSIRO has invented a new solar air conditioning system for Australian homes. This technology solution will reduce Australia's emissions, reduce your energy.

Bills and reduce our demand for electricity and gas. If every home in Australia installed our solar cooling technology it would be the equivalent of saving 15 mega tonnes of CO2 or taking 3.5 million cars off the road. CSIRO's solar air conditioning is an innovative three in one technology that provides hot water, cooling and heating. It uses only a fraction of the electricity of current systems and halves greenhouse gas emissions. The process begins with a typical solar hot water system. Water is heated by solar panels and stored in the hot water tank.

This solar hot water can then be used throughout the home, reducing the need for gas or electricity. A portion of the hot water is diverted into CSIRO's new solar air conditioning unit, which is divided into two compartments. The hot water enters a heat exchanger in the first compartment of the unit. Similar to a car radiator the heat exchanger uses the hot water to heat outside air that has been drawn into the first compartment through the vent. At the same time outside air is also being drawn into the second compartment into a desiccant wheel.

The desiccant wheel is the most critical part of the system. It is used to dry out the air before it goes into the house. Slowly turning the desiccant material in the wheel continuously absorbs moisture in the second compartment and then the absorbent material dries out in the first compartment. The desiccant material is dried out using the hot dry air generated by the heat exchanger. This air is then exhausted outside the home. The dry air from the desiccant wheel flows through an indirect evaporative cooler which creates a stream of cool dry air.

Planets of the Solar System Tutorials for Kids

After a while Starting Planets of the Solar System. The eight planets in their increasing order of distance from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. They revolve around the Sun in definite orbits. Mercury is the smallest planet in the solar system. As mercury is nearest to the sun, it is extremely hot during the day and extremely cold during the night. The second planet Venus, is the hottest and brightest of all planets. As it can be seen in the morning and evening, it is called as the morning star or evening star.

The third planet in the solar system is our planet earth. Nearly 70 of the earth's surface is covered with water, due to which earth is also called the blue planet. It is the only planet on which life is known to exist. The fourth planet is Mars. It is also known as the red planet because of the presence of red soil and rocks. The fifth and the largest planet in the solar system is Jupiter. It is so large that it can occupy nearly 1300 Earths inside it. The sixth planet, i.e. Saturn is the second largest planet in the solar system.

Inside the White House Solar Panels

Cheery melody of bells and strings Secretary Moniz Solar panels on the White House I think are a really important message that solar is here. We are doing it. We can do a lot more. I am very bullish on the future of solar energy as a key part of our clean energy future. James Doherty The size of the array that we established here is the typical size for the average American house. Being at the White House, we do have some security concerns. We can't cover the entire roof with panels,.

Though that would be good from an energysaving standpoint. Laughter. Cyrus Wadia Everything from the solar components to the inverter technologies to the labor that put the panels on the roof was all America. Domestic source, domestic maintenance. It serves as a symbol that America technology in solar is available, it's reliable, and it's ready for millions of Americans across the country. James Doherty So the first thing what we did was we drilled down into the concrete and then basically epoxied a series of threaded rods back up through the baton tops.

We then were able to install a series of grids for a subassembly upon which the solar panels could then be secured. Secretary Moniz Clean energy revolution is not something for the distant future. It's happening right now and we want to capture that. Cyrus Wadia Every four minutes, some small business or home owner is going solar. In a sense, we're going through a transition here and the industry is going through a transition that we're just seeing the beginning of. Minh Le The President is basically doing what Americans.

All across the nation are doing right now. They're making the conscious choice to look for renewable energy like solar as the cheaper, cleaner, and preferred energy source for their homes and families. Cyrus Wadia You know, we need to diversify the clean energy portfolio as articulated in the President's Climate Action Plan, which we are actively engaged in now. And we also need to spur the economic sectors of the future. Last year alone we created over 23,000 new jobs in solar energy. James Doherty Obviously the more that we can install.

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.

Evidence of a Ninth Planet

What we have discovered is that numerous features of the Kuiper Belt, a field of icy debris beyond the orbit of Neptune, can be understood if the solar system possesses an additional ninth planet that resides well beyond the orbits of the known planets. When we looked at the outer solar system we realized that while most of the very distant objects, these objects beyond Neptune, beyond Pluto. Most of these objects, they all go around the sun and they're all sort of pointing off in all different directions, but the most distant objects all swing.

Out in one direction in a very strange way that shouldn't happen. And we realized that the only way we can get them to all swing in one direction is if there is a massive planet, also very distant in the solar system, keeping them in place while they all go around the sun. And we started looking at this and thinking this must be either a coincidence or it's caused by something else. It can't be caused by a planet because that's crazy. There are no planets out there. I went from trying very hard to be skeptical that what we.

Were talking about was true to suddenly thinking, oh, this actually might even be true. So the object itself likely is more massive than the Earth, probably a little bit less massive than Neptune. It sits right in between that terrestrial to giant icy planet range. Its orbit, unlike the orbits of the known planets, is not nearly circular and planar. Instead, it is exceptionally wide, twenty times bigger than the orbit of Neptune. The orbital period of the Earth is, of course, one year. The orbital period of Jupiter, the big player in our solar system, is about.

10 years. The orbital period of this putative ninth planet, is twenty thousand years. We have nothing like it in the solar system, so it's new for us. It is, however, the most common mass of planets that have been found around all of the other stars. People have always looked at all these other planets in this strange mass range and said, Wow, I wonder what these are I don't know what these are because we don't have anything like it in the solar system. Looks like maybe we do.

There are many telescopes on the Earth that actually have a chance of being able to find it, and I think that many people will be inspired to use their telescopes. I'm really hoping that as we announced this people will start a worldwide search to go find this ninth planet. History shows us that it's a bad idea to consistently say, We have now reached the end of the solar system, and there's nothing beyond what we already know. And all those people who are mad that Pluto was no longer planet.

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