Solar Energy


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Solar Energy

  1. 1. SOLAR ENERGY  Presented by: Yna Vhea Purugganan Iris Rivera Kerivan Durupan Lyra Ibon Nina Perdonan
  2. 2. DEFINITIONS:  Solar energy is an energy source that involves tapping the radiant light energy that is emitted by the sun and converting it into electricity.  Homes that are powered by solar energy have been installed with batteries that have a capability of storing power that can operate electrical appliances such as TV, Radio, computers and refrigerators.  Solar energy is the light and radiant heat from the Sun that influences Earth's climate and weather and sustains life. In the environmental context, it is also used to refer to the process of generation of electricity by tapping the solar energy.
  3. 3.  Solar energy is the sun’s rays (solar radiation) that reach the Earth. This energy can be converted into other forms of energy, such as heat and electricity.  Solar energy is by far the Earth's most available energy source. Solar power is capable of providing many times the total current energy demand.
  4. 4. SIMPLE FACTS:  Discovered/ invented in the time of 1800’s. it was observed that the sunlight was capable of generating electrical power.  It was obtain by the radiation of the sun  Solar energy was formed by the solar panel which is placed directly under the sun to capture the sun light in the solar cells to generate electricity.
  5. 5.  Solar energy is a renewable form of energy and is much cheaper and durable. Solar heater nowadays, are used most commonly everywhere.  Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.
  6. 6. WHAT IS SOLAR POWER?  Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics convert light into electric current using the photoelectric effect
  7. 7. HOW DOES SUNLIGHT BECOME SOLAR POWER ?  Photovoltaic (PV) solar panels convert sunlight into electricity. These panels are usually installed on the top of or near homes and commercial facilities where they have maximum exposure to the sun. PV systems are effective any time the sun is shining. When sunlight is intense and strikes a PV module directly, more electricity is produced  Panels are becoming more common in urban and sub-urban areas as customers look to supplement their typical energy needs with alternative, renewable energy. Typically, one solar photovoltaic module cannot produce enough energy to power a home or business, so a number of modules or panels are grouped together to form a solar array
  8. 8. HOW DOES SOLAR ENERGY BECOME ELECTRICITY?  The first step in the process occurs when rays of light from the sun strike the cells within PV modules (modules are commonly called “panels”). As the light energy hits the photovoltaic cells, electrons are excited and begin to flow. Multiple cells are connected in one module, and several modules are connected together to form an array, all harnessing and summing the flow of this electric power.
  9. 9.  A PV array produces electricity whenever the sun shines on it. This is true from sunrise until sunset, and often times even after the sun sets! (A full moon on a clear night can actually produce small amounts of current from a PV system.) Generally speaking, an array will produce its maximum power between roughly 9:00am and 3:00pm. During those hours, with the array pushing a strong flow of DC power into the inverter, and the inverter in turn delivering a strong flow of AC to the home, it is very likely that there will be a surplus of electric power available at the house. Why? During these hours, many homes are empty, while their occupants are off to work or school. Even for those at home during the day, their need for artificial lighting (typically about 25% of a home’s electricity consumption) will be much lower
  10. 10. SOLAR ENERGY IN MANY THINGS  The energy from the sun makes rain fall and wind blow. We can capture that energy with dams and windmills.  Coal, oil, and natural gas were made from prehistoric plants and animals. The energy in them came from the sun. We use that energy to cook our food, warm our houses, run our cars, and make electricity.
  11. 11. SOLAR ENERGY IS RENEWABLE  Solar energy is free and clean. There is enough for everyone, and we will never run out of it. Solar energy is renewable. The sun will keep making energy for millions of years. Why don’t we use the sun for all our energy needs? We don’t know how to yet. The hard part is capturing the sunlight. It shines all over the Earth and only a little bit reaches any one place. On a cloudy day, most of the light never reaches the ground at all.
  12. 12. USING SOLAR ENERGY  Solar Collectors- capture the sunlight and turn it into heat. People can heat their houses and their water using the sun’s energy.  Solar cells can turn solar energy into electricity. Some toys and calculators use solar cells instead of batteries.  Solar panels are made of many solar cells. Some people put solar panels on their home. These solar panels can make enough electricity for a house. Solar panels are good for houses and buildings without access to power lines.
  13. 13. THINGS USING SOLAR ENERGY  Solar charger  Solar keyboard  Solar powered compacting trash  Solar lamp can  Solar roadway  Solar cooker  Solar Spark Lighter  Solar dryer  Solar still  Solar fan  Solar tree  Solar furnace  Solar vehicle  Solar inverter