Which two renewable energy forms did you choose? The two energy sources I choose were Solar and Wind. Solar energy is gathered by harnessing the suns rays via PV panels. "Solar photovoltaic (PV) is the main solution used today, involving the use of PV panels that generate electricity when exposed to the sun"(Ahmed, R. A., 2009). These panels trap the suns rays and convert them to energy that can be used instead of the traditional fossil fuels.
Photon flux is crucial in determining the generation rate of solar cells. The energy of photon at a particular wavelength multiplied by the photon flux will yield the power density which is measured in Watts per m2 (W/m2). The power density at a particular wavelength is characterized by the spectral irradiance which is the most commonly used method to characterize a light source. These set of equations are crucial in selecting materials for designing solar cells so that we can effectively utilize the energy radiated by the Sun into the Earth’s
Battery In present society the main role of battery is important as energy carrier, due to present devices are used for every day. The demand of batteries is increased rapidly due to the large interest in wireless devices. Many large companies produce several million batteries per month due to requirement. The energy capacity has improved and it is major development issue, for this consumer products are probably safe and considered equally important today. To reduce fuel consumption and gas emissions, battery technological development has to be improved for the newly hybrid based electric vehicles.
ABSTRACT: “ENERGY DEMAND” is one of the major threads in our country at present situation. In order to meet the energy demand, usage of Renewable Energy is the only alternate solution. This paper deals with the new method of harvesting solar energy with the help of solar panel. The new method deals with direct conversion of heat into electricity by means Thermo electric conversion (SEEBECK EFFECT) so that along with light energy from the sun, heat energy is also absorbed by the solar cell and converted into electricity. Thus with the single panel we can generate more amount of electricity, cost of generation is reduced and efficiency of solar panel is also increased.
The sun has produced energy for billions of years. Its emits about 3.86 x 1026 watts of energy; 1.74 x 1017 watts of it strikes the earth. Solar energy is the sun 's rays that reach the earth. This energy can be converted into heat and electricity. Solar panels are large flat panels and made with lots of individual solar cells.
Ever since the very first day the earth was formed, sunlight has been mandatory to provide heat and light for living beings to grow. Every hour the sun shines onto Earth more than enough energy to provide global energy needs for an entire year; it would be beneficial if we can utilize the clean, free and unlimited resource in our daily life. Solar energy is the technology innovated to retain the sun 's energy and transfers it into electricity; however the technology produces less than 0.01 percent of global energy demands nowadays.  The photovoltaic technology has been evolving and improving in many ways to provide huge potential capacity; the worldwide solar energy capacity had cumulated to a total of 180GW till year 2014. It’s forecasted to reach 400GW cumulatively until 2018 according to European Photovoltaic Industry Association.
Find ways to use the sun as an energy provider for human society. This topic of work is labeled under solar energy, or using the sun’s solar rays to product energy. So where did solar energy come from and what are the advantages and disadvantages of it. According to the article “The History Of Solar Power” Will Reece states that in 1876 William Grylls Adams and one of his students found that when the chemical element selenium was exposed to light it created electricity. This discovery showed that heat could be turned into electricity.
It works on the theory that when light falls on the solar cell, electron -hole pairs are created in the n-type emitter and in the p-type base. The generated electrons and holes then diffuse to the junction and are swept away by the electric field, thus producing. Some modules are selected and worked out to suitable specifications. The development of solar charger goes from the fundamental level
This isknown as Photovoltaic effect.Below figure shows the working mechanism of asilicon solar cell.Figure 2: Silicon Solar Cell and its workingmechanism (Source: global.kyocera.com)The amount of current generated by a PV celldepends on its efficiency, its size (surface area)and the intensity of sunlight striking the surface.For example, under peak sunlight conditions atypical commercial PV cell with a surface area ofabout 25 square inches will produce about 2watts peak power.The Sun is the fundamental driving force forenergy in the Earth's climate system. It is ofcrucial importance to understand fully theconditions of its arrival at the top of theatmosphere and its transformation through theearth. The amount of solar power available perunit area is known as irradiance. Irradiance is aradiometric term for the power ofelectromagnetic radiation at a surface, per unitarea. It is used when the electromagneticradiation is incident on the surface.
Thephotothermalsystems convert solar radiation into thermal energy, which may be converted as electrical energy, whereas the photovoltaic systems directly convert sunlight into electricity. The photovoltaic effect was first discovered by Becquerel  in 1839 who observed a photovoltage when light was directed onto one of the electrodes in an electrolyte solution. Later Lange  et.al did pioneering work on selenium and cuprous oxide photovoltaic cells. Today photovoltaic modules are incredibly