write essay on solar energy
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Solar energy is the energy received by the earth from the sun that is converted into thermal or electrical energy.
Solar energy influences Earth’s climate and weather and sustains life. Although solar energy only provides 0.15% of the world’s power, experts believe that sunlight has the potential to supply 5000 time as much energy as the world currently consumes.
Broadly speaking, solar energy is a term for describing a range of methods for obtaining energy from the sun. For instance, wind, biomass and hydropower are all forms of solar energy.
Wind develops through lows and highs in temperature. Wind drives waves. Rainfall, created by sun-warmed evaporated water feeds the rivers that are sources of hydro power. Fossil fuels are also forms of stored solar energy. Coal, oil and gas formed hundreds of millions of years ago from decomposed plant matter. Plant matter that grew by aid of the sun.
Important Applications of Solar Energy in Modern Days
Some of the important applications of solar energy are summarized below:
(i) Space cooling and heating through solar architecture,
(ii) Potable water via distillation and disinfection,
(iii) Solar cooking,
Photovoltaics (PVs) are arrays of cells containing a solar photovoltaic material that converts solar radiation into direct current electricity. Solar cells produce direct current (DC) electricity from sunlight, which can be used to power bulb/equipment or to recharge a battery, however, for grid connected power generation; an inverter is required to convert the DC to alternating current (AC)
A number of solar cells electrically connected to each other and mounted in a support structure or frame is called a photovoltaic module. Multiple modules can be wired together to form an array. In general, the larger the area of a module or array, the more electricity that will be produced
When the n-type and p-type semiconductors are sandwiched together, and irradiated with sunlight, the excess electrons in the n-type material flow to the -type, and the holes thereby
Vacated during this process flow to the n-type through this hole and electron flow, the two semiconductors act as a cell, creating an electric field at the surface where they meet (known as p-n junction). It is this field that causes the electrons to jump from the semiconductor out toward the surface and make them available for the electrical circuit
Advantages of solar Photovoltaics
(i) Easy installation and maintenance
(ii) Pollution free
(iii) Long life
(iv) Viable for remote and isolated areas, forest, hilly, desert regions.
Solar energy influences Earth’s climate and weather and sustains life. Although solar energy only provides 0.15% of the world’s power, experts believe that sunlight has the potential to supply 5000 time as much energy as the world currently consumes.
Broadly speaking, solar energy is a term for describing a range of methods for obtaining energy from the sun. For instance, wind, biomass and hydropower are all forms of solar energy.
Wind develops through lows and highs in temperature. Wind drives waves. Rainfall, created by sun-warmed evaporated water feeds the rivers that are sources of hydro power. Fossil fuels are also forms of stored solar energy. Coal, oil and gas formed hundreds of millions of years ago from decomposed plant matter. Plant matter that grew by aid of the sun.
Important Applications of Solar Energy in Modern Days
Some of the important applications of solar energy are summarized below:
(i) Space cooling and heating through solar architecture,
(ii) Potable water via distillation and disinfection,
(iii) Solar cooking,
Photovoltaics (PVs) are arrays of cells containing a solar photovoltaic material that converts solar radiation into direct current electricity. Solar cells produce direct current (DC) electricity from sunlight, which can be used to power bulb/equipment or to recharge a battery, however, for grid connected power generation; an inverter is required to convert the DC to alternating current (AC)
A number of solar cells electrically connected to each other and mounted in a support structure or frame is called a photovoltaic module. Multiple modules can be wired together to form an array. In general, the larger the area of a module or array, the more electricity that will be produced
When the n-type and p-type semiconductors are sandwiched together, and irradiated with sunlight, the excess electrons in the n-type material flow to the -type, and the holes thereby
Vacated during this process flow to the n-type through this hole and electron flow, the two semiconductors act as a cell, creating an electric field at the surface where they meet (known as p-n junction). It is this field that causes the electrons to jump from the semiconductor out toward the surface and make them available for the electrical circuit
Advantages of solar Photovoltaics
(i) Easy installation and maintenance
(ii) Pollution free
(iii) Long life
(iv) Viable for remote and isolated areas, forest, hilly, desert regions.
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Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.
It is an important source of renewable energyand its technologies are broadly characterized as either passive solar or active solardepending on how they capture and distribute solar energy or convert it into solar power. Active solar techniques include the use of photovoltaic systems, concentrated solar power and solar water heating 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.
The large magnitude of solar energy available makes it a highly appealing source of electricity. The United Nations Development Programme in its 2000 World Energy Assessment found that the annual potential of solar energy was 1,575–49,837 exajoules(EJ). This is several times larger than the total world energy consumption, which was 559.8 EJ in 2012.
In 2011, the International Energy Agency said that "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries’ energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating global warming, and keep fossil fuel prices lower than otherwise. These advantages are global. Hence the additional costs of the incentives for early deployment should be considered learning investments; they must be wisely spent and need to be widely shared
It is an important source of renewable energyand its technologies are broadly characterized as either passive solar or active solardepending on how they capture and distribute solar energy or convert it into solar power. Active solar techniques include the use of photovoltaic systems, concentrated solar power and solar water heating 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.
The large magnitude of solar energy available makes it a highly appealing source of electricity. The United Nations Development Programme in its 2000 World Energy Assessment found that the annual potential of solar energy was 1,575–49,837 exajoules(EJ). This is several times larger than the total world energy consumption, which was 559.8 EJ in 2012.
In 2011, the International Energy Agency said that "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries’ energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating global warming, and keep fossil fuel prices lower than otherwise. These advantages are global. Hence the additional costs of the incentives for early deployment should be considered learning investments; they must be wisely spent and need to be widely shared
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