Solar Power By: Patrick D, Elyse L, and John A. What is Solar Power? Solar power is… Sunlight converted into usable energy. How solar energy is converted.

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Presentation transcript:

Solar Power By: Patrick D, Elyse L, and John A

What is Solar Power? Solar power is… Sunlight converted into usable energy. How solar energy is converted into useful energy Active Solar Energy Passive Solar Energy There are many types of solar energy, which are… Solar Thermal Energy Photovoltaic Solar Energy Concentrating Solar Energy

Basics of Collecting Solar Power. Solar panels collect the suns rays. Solar panels are large flat panels made up of many little solar cells. A solar cell is a small disk of a semiconductor like silicon.

Ways of Collecting Solar Power. There are three ways to collect solar power which are… Flat-Plate Collectors Focusing Collectors Passive Collectors

Active Solar Energy Uses Mechanical devices in collecting, storing, and distributing. Focusing mirrors and metal plates. Is used to heat water in homes and other water devices. Space heating.

Passive Solar Energy No collectors, grids, or cells. South side of buildings. Floors and walls absorb the sunlight to store. Trombe wall, made of black material.

Solar Thermal Electric Energy Concentrates sunlight to create heat. Heat runs heat engine. Turns a generate to generate electricity. The working fluid that is heated by sunlight can be liquid or gas. Different working fluids are: water, oil, salts, air, nitrogen, helium, etc. Spain and Australia are currently the leading countries in solar thermal energy production.

Photovoltaic Solar Energy The direct conversion of light into electricity at an atomic level. Can use photovoltaic solar cells Some materials show a property known as the photoelectric effect.

Photoelectric Effect First noted by a French physicist Edmund Bequerel in Certain materials produce small amounts of electric current when exposed to light. Elbert Einstein found the nature of light and the photoelectric effect that photovoltaic technology is based on.

Concentrating Solar Energy Concentrating Solar Power(CSP) technologies use mirrors to reflect and concentrate sunlight onto receivers that convert the energy to heat. The thermal energy can be used to produce electricity using a steam turbine or a heat engine.

Advantages to the Use of Solar Energy. Doesn’t produce pollution. It is a renewable resource. It is a free resource. It is an easy way to heat homes. Easy resource to collect Less dependent on the worlds fossil fuels.

Disadvantages to the Use of Solar Power Some climates are very cloudy, so the solar power can’t collect the sun. Solar cells and solar collectors are very expensive. Can be 1/3 of the total cost of the house. Can only produce electricity during the day. Pollution can damage solar cells. To some the solar panels are not appealing to look at.

Waste by-Products of Solar Power The actual energy does not produce waste. The production of solar cells uses fossil fuels to make them. It also has a problem disposing mercury, and chromium which are waste metals. Making solar panels uses potentially toxic materials. (Examples: cadmium, selenium, silicon tetrachloride, powerful GHG sulfur hexafluoride)

Storing Solar Power One way of storing solar power is to use a battery bank. Battery banks are batteries wired together to endure huge charges and discharges of energy. Another way to store solar energy is to use a grid- tied PV system. In a grid-tied PV system, the energy is stored within the solar panels.

Solar Energy Fun Facts You can cook food with solar energy! Solar panels can come in many different colors including: red, yellow, blue etc. About 30% of solar energy is used to heat water. Da Vinci predicted the use of solar energy as far back as 1447.

Bibliography Brown, Eric W. "An Introduction to Solar Energy." College of Computer and Information Science. E. W. Brown, Web. 09 Mar "Solar Power | Solar Power House | Solar Power System." Solar Energy Web. 09 Mar "The Sun Is Our Source." Solar Thermal Energy Web. 09 Mar Headline News - NASA Science." NASA Science. Nasa, 7 Mar Web. 09 Mar "Solar Energy Advantages Disadvantages and Solar Power Information." Solar Energy Advantages Disadvantages and Solar Power Information Web. 12 Mar

Bibliography "U.S. DOE Energy Efficiency and Renewable Energy (EERE) Home Page." U.S. DOE Energy Efficiency and Renewable Energy (EERE) Home Page. U.S. Department of Energy, Web. 09 Mar "Natural & Renewable Energy Sources." - Clean Energy Ideas Web. 09 Mar "News & Lifestyle." Find Recycling Centers and Learn How To Recycle Web. 09 Mar "Do You Want To Take Advantage Of Solar Energy?" Solar Energy, Solar Power, Facts About Solar Energy Web. 09 Mar Holt Science & Technology Enviromental Science. Holt Science & Technology, Print.