Heat results when photons, packets of light energy, hit the atoms that compose a substance (water, your body, asphalt), exciting them. Solar thermal technologies include passive solar systems for heating buildings (or cooling! ); solar collectors, often used to provide hot water for homes; systems and concentrating solar power. Solar energy These systems, also known as solar thermal power plants use the sun 's heat to produce steam, which then turns a turbine and generates electricity. (Fossil fuel power plants also generate electricity by first creating steam to drive a turbine.)
Solar energy is the energy received by the earth from the sun that is converted into thermal or electrical energy (Tran et al., 2016). It is an important source of renewable energy and its technology are roughly branded as either solar energy or active solar provisional on how they capture and distribute solar energy or converted it into solar power. Although solar energy influence earth’s climate and weather, solar energy provide 0,5 percent of the world’s electricity, expect believes that sunlight has the potential to supply 5000 time as much energy as the world consumes (Tran et al., 2016). Broadly speaking, solar energy is a term used to describe a range of methods for obtaining energy from the sun. The large magnitude of solar energy available
Concentrator solar power concentrates light energy from the sun on a smaller surface to boil a liquid. The steam then spins turbines to generate electricity. This is might be cheaper than using photovoltaics because you don’t need to store the energy for overnight. The thermal storage allows for electricity to be generated for up to 24 hours. There are many types of technologies to do this, for example parabolic trough, compact linear Fresnel reflectors, Stirling solar dish and solar power tower.
The first thing to consider while choosing the energy for us is its efficiency. The efficiency of solar energy is better than the coal because it is produced in two different ways i.e. by using the photovoltaic (PV) or by using solar cells which help to convert sunlight
Solar Cookers Planning Board Theoretical background Explain conduction, convection, and radiation. How are solar cookers used in developing countries? Why will this modification increase the temperature change of the water? Conduction is the process by which heat or electricity is directly transferred through the material of a substance where there is a change of temperature or electrical potential between connecting regions, without movement of materials. Some examples of conduction heat are.
Renewable energy are considered to be important in improving the security of energy supplies by decreasing the dependence on fossil fuels and in reducing the emissions of greenhouse gases. The viability of isolated systems using renewable energy depends largely on regulations and stimulation measures. Renewable energy are the natural energy re that are inexhaustible, for example, wind, solar, geothermal, biomass, and small hydro generation. Among the renewable energy , small hydro and wind energy have the ability to complement each other. In a location with enough average wind speed and a suitable area for wind turbines, wind pumped storage system is a good combination with a hydro power plant.
1.1 Wind Energy System Wind is air in motion, it is due to uneven heating of earth surface by the sun rays. Since the earth surface consists of different types of land the water, it absorbs the sun heat at different rates. Wind energy is mainly used to generate electricity like earlier wind mills modern wind machines used blades to collect the winds Kinetic energy. 1.1.1 Advantages 1) The blades ere connect to shaft that turn on an electric generator to produce electricity. 2) Use of wind power to produce electricity on commercial scale has become the fastest growing energy technology.
Photovoltaic cells, which can be found in solar panels, convert sunlight into solar power. However they only work when the weather and time is right, making it a temporary source of energy. Artificial photosynthesis would be able to store fuel, making it available even whatever the conditions. Artificial photosynthesis also has the ability to produce more than one type of fuel. The photosynthetic procedure can be altered to make the reaction between CO2, H2O and light produce liquid hydrogen.
Renewable energy is energy that is generated from original processes that are continually replenished. This includes the following sunlight, geothermal heat, wind, water, and various forms of biomass. This energy cannot be exhausted and is constantly renewed. The main sources used in renewable energy are solar,wind,and hydropower energy. Even though many people disagree with the use of renewable energy it has a positive effect globally due to the use of solar,wind,and hydropower energy.
The power of wind will be taken through a wind turbine and the power of the sun light will be taken through a solar panel. These wind turbines and solar panels will be delivering DC voltages. These voltages will be fed separately to charge controllers. Charge controller will be either PWM or MPPT. These charge controllers will be control the output voltage and will protect the battery from overloading and will protect the wind/solar units from reverse voltage flows.