Vsf ppt on solar impulse v5
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This presentation is to motivate young minds to use alternate energy sources in innovative way. The students would have interest generated in solar energy, battery, aircraft technology.
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Vsf ppt on solar impulse v5
- 1. Dr. BP Joshi, Principal Cummins College WELCOME TO विज्ञान भारती STUDENT’S FORUM
- 2. Solar Impulse II – The Flying Green Technology example
- 6. o Drying Agricultural Products o Heating Water o Space Heating o Generating Electrical Energy Major Uses of Solar Energy
- 7. Solar Technology Applications o Day-lighting o Passive Solar Heating o Active Solar Heating o Concentrating Solar Thermal o Photo-voltaics (PV)
- 10. PV Array Components o PV Cells o Modules o Arrays
- 13. o Clean o Sustainable o Free o Provide Electricity to Remote Places Advantages of Solar Energy
- 14. Energy o Inefficient and costly equipment o Part Time availability o Reliability Depends on Location o Environmental Impact of PV Cell Production
- 16. The Pilots of Solar Aircraft on RTW Bertrand Piccard and André Borschberg are taking #Si2 further East. The solar airplane took off on 18th morning from Ahmedabad, with André Borschberg at the commands. Bertrand Piccard will continue onward from Varanasi to Mandalay, Myanmar next day.
- 17. Solar Impulse 2 Flight
- 18. Basics of Flights Weight's opposing force is Lift, which holds an airplane in the air. This feat is accomplished through the use of a wings (airfoil) Drag is the force in opposition to the Thrust.
- 19. Basics of Flights The wing splits the airflow over the wing and below the wing. The shape and tilt of wing makes air moving over it travel faster than the air moving underneath. As air speeds up, its pressure drops. So the faster-moving air, over the wing, exerts less pressure on it than the slower moving air underneath the wing. The result is an upward push of lift. Bernoulli's Principle
- 20. Ailerons for Roll Motion • Ailerons, are horizontal flaps located near the end of an airplane's wings. • These flaps help one wing to generate more lift than the other, resulting in a rolling motion. • This results in banking of plane to left or right. • Ailerons usually work in opposition.
- 21. Elevators for Pitching On the horizontal tail wing, these flaps are called elevators as they enable the plane to go up and down through the air.
- 22. Rudder for Yaw motion Vertical tail wing features a flap known as a Rudder that enables the plane to turn left or right
- 23. Solar Impact – 2 Aircraft
- 26. SI-2 Facts • Single seat aircraft made of carbon fiber • Weight of just 2,300 Kg (~ a car) • 72 meter wingspan (larger than that of the Boeing 747-8I) • The 17,248 solar cells used on the wing to generate 66KW peak • Solar cell thickness 135 microns • Four electric motors 4 x 17.4 BHP • Lithium batteries: weighing 633 Kg, providing 13 kW each • Propeller diameter: 4 m (13.1 ft)
- 27. SI -2 Facts Performance • Maximum speed: 140 km/h • Cruise speed: 90 km/h (60 km/h at night to save power) • Service ceiling: 8,500 m (27,900 ft) with a maximum altitude of 12,000 meters (39,000 ft) • Take-off speed: 35 kmph
- 28. SI -2 Facts about RTW trip 2 pilots (One at a time) 12 Halts Total distance 35000 Kms 500 Hrs of flying Days n Nights in 5 Months 90 Support team members 340 KW Daily produced solar power Average altitude 8500 km Average speed 100 kmph Abudhabi – India – Myanmar – China – USA – UAE
- 63. How to make solar Cooker
- 64. E-mail - vibhavid@gmail.com bhushanpjoshi@gmail.com Website: www.vijnanabharati.org THANK YOU Phone No. 0712-2741772, 09850333408, 08552865111, 09850391487
Notes de l'éditeur
- Solar energy is radiation produced by nuclear fusion inside the sun’s core. It takes millions of years for the energy in the sun’s core to make its way to the solar surface. It takes 8 minutes to travel 93 million miles to earth. (186,000 miles per second) The Greenhouse effect traps some of the heat making life on earth possible.
- A car is a good example of how solar energy can be collected and put to use. Because solar energy is radiant energy, no heat from the sun travels to the earth. The radiant energy turns into thermal energy (heat) when it is absorbed by molecules on Earth. In a car, the insides of the car(sets, floors, walls, etc.) absorb sunlight and change it to heat. The glass window lets the light in but does not let the heat out.
- The four technologies employed to make use of solar energy are: Daylighting- the use of natural sunlight to brighten the building’s interior. Passive Solar Heating- takes advantage of Sun’s warmth and materials that absorb that warmth during the day/release it at night when heat is needed. Active Solar Heating- solar collectors concentrate the sun’s power on dark color plates that absorb heat. Air or liquid flows through tubes and warmed by the plates. Concentrating Solar Thermal- mirrors direct sunlight on one point. Water is turned into steam with this heat. The steam turns a turbine to create electricity. Photovoltaic(PV)- converts sunlight directly to electricity.
- A PV cell is made from a thin disc of almost pure silicon crystal called silicon wafer. A small amount of boron is added. The boron gives the crystal structure a positive electrical characteristic. Since this part has a positive characteristic it is referred to as a “P” type silicon and it forms the base of the cell. A thin layer of silicon crystal is formed over the disc of “P” type silicon. This time a small amount of phosphorous is added to the mixture. The phosphorous mixture creates a negative characteristic and thus is referred to as an “N” type silicon. When light penetrates to the junction of the “N” and “P” type silicon layers it creates a flow of electrons throughout the crystal structure. This flow of electrons occurs because sunlight is composed of photons, or particles of solar energy. When sunlight strikes a PV cell, some photons are absorbed. When enough sunlight (energy) is absorbed by the material (called a semiconductor), electrons are dislodged from the materials’ atoms. A crystal structure of silicon contains empty areas which accept the electrons. As one electron moves to fill a hole, it created another hole. It is the flow of these electrons that produces electricity.
- The photovoltaic cell is the basic building block of a PV system. Individual cells can vary in sizes from about 1cm to about 10 cm across. Most cells are made with silicon today. Silicon must be purified– this is one of the biggest expenses in the production of solar cells.
- One PV cell only produces 1 or 2 watts of electricity, which isn't enough power for most applications. To Increase power groups of solar cells are electrically connected and packaged into packaged weather-tight modules and arrays to provide useful output voltages and currents to provide a specific power output. A PV System typically consists of 3 basic components. PV cells - Electricity is generated by PV cells, the smallest unit of a PV system, Modules - PV cells are wired together to form modules which are usually a sealed, or encapsulated, unit of convenient size for handling. Arrays – Groups of panels make up an array. The conversion efficiency of a PV cell is the proportion of sunlight energy that the cell converts into electrical energy. This is very important because improving this efficiency is vital to making PV energy competitive with more traditional sources of energy, such as fossil fuels. The first PV cells were converting light to electricity at 1 to 2 percent efficiency. Today’s PV devices convert up to 17 percent of the radiant energy that strikes them into electric energy. (40% NREL)
- Solar PV System Solar cells produce direct current (DC), therefore they are only used for DC equipments. If alternating current (AC) is needed for AC equipments or backup energy is needed, solar photovoltaic systems require other components in addition to solar modules. These components are specially designed to integrate into solar PV system, that is to say they are renewable energy products or energy conservation products and one or more of components may be included depending on the type of application. The components of a solar photovoltaic system are: Solar Module is the essential component of any solar PV system that converts sunlight directly into DC electricity. 2. Solar Charge Controller regulates voltage and current from solar arrays, charges the battery, prevents battery from overcharging and also performs controlled over discharges. 3.Battery stores current electricity that produces from solar arrays for using when sunlight is not visible, nighttime or other purposes. 4. Inverter is a critical component of any solar PV system that converts DC power output of solar arrays into AC for AC appliances. 5. Lightning protection prevents electrical equipments from damages caused by lightning or induction of high voltage surge. It is required for the large size and critical solar PV systems, which include the efficient grounding.