"Solar" is the Latin word for "sun" - and is a powerful source of energy. In fact, sunlight shining on the Earth in one hour could meet global energy demand for an entire year! We can use solar energy in two ways: as a heat source, and a source of energy. People have used the sun as a heat source for thousands of years. Families in ancient Greece built their houses to get the most sunlight during the cold winter months.
Solar energy is the radiation that exudes from atomic responses inside the sun, sun oriented vitality or daylight achieving Earth through space as packs called photons. The photon is a rudimentary protest, a quantum light and every single other type of electromagnetic radiation. It's in some shape is the source of all vitality on Earth, similar to every single other creature and plants, contingent upon the sun for warm up and nourishment. However people are saddling their solar energy in a wide range of ways. For instance, non-renewable energy sources, it's plant material from a previous topographical age, are utilized for transport and power age, basically solar energy stored put away a huge number of years prior.
2015) 2.4. Energy Yield For the greatest energy yield, solar panels must aim to maximize their exposure time to sunlight. This is best done by solar trackers that orientate the panels to follow the sun. On a very cloudy day, a photovoltaic panel will generate about 40% of the electricity it would on a clear and sunny day. (How does cold weather impact on solar PV performance?
From this all sources solar is the biggest source of energy. Which is freely available and infinite source. The sun creates energy through thermonuclear process that converted in hydrogen to helium every second. That converts in heat and electromagnetic radiation. The heat remains in sun and electromagnetic radiation come out in the space.
• The Sun has alwayss been the ultimate source of energy and mankind . Since time is immortal . As natural source of energy has been nurturing life over our planets from millions of years . • To further elaborate about details of the process its worth mentioning here that Solar Energy is quite in all directions. • We all know , not all the energy radiated by sun that reaches on our planet ,only a very few reach to Earth only this much small amount of energy is the source which is directly or indirectly involved in supporting the living system .The exceptions to above are dependent upon the sun.
Sunlight is the primary energy source for existence of life on earth. The light and heat energy from sun travels approximately 150 million kilometres to reach earth atmosphere. Total energy incident on earth atmosphere from sun consist of infrared and visible light with around 10 percent of ultra violet light. Solar constant calculated on the atmosphere accounts for about 1360 W/m2. The value reduces when reaching the land to 1000 W/m2 due to attenuation by earth’s atmosphere.
SOLAR ENERGY Solar energy is energy harnessed by the radiant light and heat of the sun by using technologies such as photovoltaic, solar thermal energy, solar heater, and solar charger. It is the most readily and abundant source of energy .It is also the most important non-conventional source of energy as it’s non-polluting and hence helps in tackling the greenhouse effect. Solar systems are powered by energy from the sun. Two generic types of solar-electric systems are solar photovoltaics and solar thermal electric. Photovoltaics use a quantum process to convert solar radiation directly to electricity.
Solar cells are usually electrically connected and encapsulated as a module. Photovoltaic modules usually have a sheet of glass on the front side, which allow light to pass while protecting the semiconductor wafers from the elements like rain, hail, etc. Solar cells are also usually connected in series in modules, creating an additive voltage. A higher current will be yielded if the cells are connected in parallel. Hence, these modules are interconnected in any way that is series, parallel or both to create an array with the wanted peak DC voltage and
Solar energy is the radiant energy transmitted to the earth from the sun. It has provided, either directly or indirectly almost all of the sources of energy on earth since the formation of the planet. Analysis shows that most forms of energy used today originated from the sun except for nuclear and tidal energy. Solar energy is very attractive because it is non polluting, non depletable, reliable, and free. The solar energy can be used in the heating of buildings, producing electricity directly from the sun, for the drying of food, for fuel, and for obtaining salt from brine (Schwaller and Gilbert, 1997).
1.1 SOLAR ENERGY : Solar Energy is the resultant outcome of thermonuclear reactions of fusion from hydrogen into helium taking place in the sun. These thermonuclear reactions release huge energy and radiate the energy to space continuously. This kind of energy which is continuous and eternal is available as solar energy. The average intensity of solar radiation on the earth circumnavigate is 1367kW/m2, and the earth's equatorial circumference is 40,000km, so it can be worked out that the energy the earth obtains is up to 173,000TW. The energy on earth, including wind energy, hydropower, ocean thermal energy, wave energy, bio energy and some tidal energy all come from the sun.