Solar Energy
Essay Preview: Solar Energy
Report this essay
Solar Energy: The Only Consistent Fuel Without Waste
“The use of solar energy has not been opened up
because the oil industry does not own the sun.”
Mr. Ralph Nader
Our entire country is being controlled by the fossil fuel that we call oil. Not only do all of our motor vehicles depend on it but with out oil the country would literally be shut down unable to function. Every one of us is affected by fluctuation of gas prices at the pump. But humanity has always been in search of a fuel that never runs out, has multiple uses, and can be used in every day life that is cost effective. Most of the Solar power that exists today has been a combined result of the understanding and harnessing of the suns power. We need to look at solar energy seriously as a possible solution. Looking at solar energys history gives the reader a broad look at this alternative energy choice.
Ever since the dawn of time, the sun has been a resource we cannot live or do without, so its not such a shock that man has come up with the idea of solar energy. Solar energy had many uses. Some can be dangerous and some, a very valuable asset to the modern world. Solar energy is energy derived from the sun in a form of ultra-violet rays. Its was first applied to use in 212 B.C., by the Greek genius Archimedes. Solar energy was used to defend the harbor of Syracuse against the Roman fleet. Archimedes used a mirror or “burning mirror” as they had called it, to set fire to the ships of the Roman fleets while standing on shore (Cheremisinoff). It wasnt until 1615 when
Whitaker Page 2
Salomon de Caux constructed the first solar device; a solar engine. His device was made of glass lenses, supporting frame, and an airtight metal vessel containing water and air.
This produced a small water fountain when the air heated up during operation. This was considered to be more of a toy than a device, but it was the first published account of the use of solar energy since the fall of the Roman Empire (McPhillips).
Some other use of solar energy after that were the solar roof and the solar oven. The solar roof was thought up by Harold Hay. In a solar roof system, water is contained in a clear plastic bag and it is placed on a black metal roof. Hay got the idea while traveling in India on a technical aid mission for the U.S government. While there, he noticed that many people were living in rusty, sheet metal shacks, which were hot in the day and cold at night. Hays plan was to remove the insulation from the roof on winter days so that the roof would get hot, and Replacing the insulation at night to allow the shack to be warm through the night. Then in the summer, he would so the reverse of what he did in winter to let the house cool at night and replacing the insulation in the daytime to block out the heat. Then over the years, Hay and a man named John Yellott constructed a 3- by 3.7-m building using water basins as the actual roofing material.
During the summer, a slab of foam insulation was rolled back at night, and the water would become cold through the night sky evaporation. Since the water supply sat directly on a metal ceiling, it absorbed the heat from the room and kept the building air-conditioned all day. During the winter, the movable insulation was rolled back in the daytime which allowed for it to collect heat. This generated enough heat into the house
Whitaker Page 3
through the ceiling at night to keep the room comfortable (Rose). Then there was the solar cooker. Developed by Augustin Mouchot in France and by John Ericsson in the
United States in the nineteenth century. They wanted to develop a solar cooker that not only reached high temperatures, but also was to be used as a means of heat storage
enabling food to be cooked after sundown. Mouchot built a solar steam engine that operated a printing press in Paris in 1882.
In the United States, John Ericsson invented what he called the “Ericsson-cycle” which was a hot-air engine for the making of solar heat. The suns rays would be concentrated with the use of a parabolic reflector, which was designed to track the sun across the sky in order to keep a constant power output. (Holstroemn) There was also the solar oven. In 1837, and astronomer from England named John Fredrick Herschel introduced to the world a solar oven. He built a small solar oven while on a trip to Africas Cape of Good Hope. He constructed it as a mahogany, painted it black and buried it in the sand for purposes of insulation. a doubled-glazed cover, which was the only portion of the oven left exposed, serve to limit heat losses through the top, while at the same time, letting in sunlight. The maximum temperature of the oven was of about 240 degree F and it was used throughout his expedition by him and his staff to cook both meat and vegetables (Regino).
Another dangerous solar energy is Ultra-violet rays. Ultra-violet rays are also referred to as UV rays for short. They are energy rays that are given off from the sun. UV rays were first discovered by astronomers in the 1960s. It can be dangerous because too much rays can cause you to sun burn, tan, damages your hair, and at the worst; skin
Whitaker Page 4
cancer. You can get skin cancer if your are not careful about how to spend and protect yourself from the sun. One way to protect yourself is by applying sun tan lotion to your skin every time that you plan on spending a lot of time in the sun, especially if you are going to the beach. To be on the safe side for sure, you should apply it every time you are in the sun. (Regino).
There are basically a lot of solar powered inventions in our society today. Like in our household, there is much solar equipment. There is the solar heating, solar satellite, solar water heating, solar cooling, solar radio, solar battery, etc. As you can see, there are so many solar items in the world so solar is an important source. (Rose). We believe that solar energy is worth it. It is a good thing that our planet has so many ways of generating energy. We have electricity, solar power, nuclear power, propane, so many! We think that out of all the choices of energy, we prefer solar. The sun is always here for us. Solar energy is the only energy source that can not be controlled. We could lose all of our electricity and still live because we can live off of solar power. You dont need electricity or gas to power your stove because when there is a storm, the power can be knocked