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Wednesday, 18 March 2020

Solar Energy | solar radiation | Renewable Energy

What is Solar Energy in simple words?

Solar Energy works on sunlight, it receives the sun's energy and converts it into electricity. You can use it in your office, homes and shops.
Solar Energy
Sun is a large source of thermal energy. It releases energy in small packets called photons. Photons travel 93 million miles distance to reach on earth in about 8.5 minutes. Every day, enough photons impact earth to generate enough solar energy to complete our daily electricity uses.
The Sun is a particularly powerful energy source. The sunlight is far and away from the most important source of energy received by Earth. But its intensity at Earth’s surface is quite low. This is often essential due to the big radial spreading of radiation from the distant Sun.
A comparatively minor additional loss is thanks to Earth’s atmosphere and clouds. which absorb or scatter the maximum amount as 54 per cent of the incoming sunlight. The daylight that reaches the bottom consists of nearly 50 per cent light, 45 per cent infrared. smaller amounts of ultraviolet and other sorts of electromagnetic wave.

solar radiation

Solar radiation energy emitted by fusion reaction on the sun that creates electromagnetic energy. The spectrum of radiation is on the brink of that of a black body with a temperature of about 5800 K. About half the radiation is within the visible short-wave a part of the spectrum. the opposite half is usually within the near-infrared part, with some within the ultraviolet a part of the spectrum.

Renewable Energy

Solar energy is renewable energy and Renewable energy source never runs out. we will never waste the power source entirely.
Solar power, wind power, and heat, for example, have renewable energy sources over a human time scale. The energy of the Sun, on our time scale, never runs out. The wind is usually there, and the heat below the Earth's surface is continuous.
renewable energy

Biomass, plant energy and other organic materials, is also renewable. Humans have been burning firewood to heat their homes and cook their food for thousands of years.

Utility-Scale Solar

When we talk about solar energy, we often hear residential or commercial solar energy. This type of solar power generates electricity for your home or business. So what is utility-scale solar energy and what does it do?
The size of municipal solar installations varies. they range from just 1 megawatt of power generation to a whopping 377 megawatts of solar power. the simplest definition of solar energy performance is not size but function.
In this case, solar power works by generating solar energy and feeding it into the grid, providing usable energy with energy. this is often different from distributed energy (GD) solar as the project is much larger. Therefore the electricity produced is sold to wholesale utility customers rather than to final consumers.
Municipal solar installations have a decisive influence on the environment. they are silent and emit noxious and toxic pollutants such as CO2.

Solar Panel and works

Photovoltaic (PV) solar panels are made of many solar cells. Solar cells are made of silicon. They are constructed with positive and negative layers that together create an electric field, much like through a battery.
Solis Inverter

When photons strike a photoelectric cell, they knock down electrons loosening from their atoms. If the conductors are attached to the positive and negative sides of the cell, it forms a circuit. Electricity produced by the flow of electrons.
Several cells form the structure of a solar panel. several panels (modules) are often joined together to form a solar panel. The more panels you put in, the more power you get.

How Solar Panels Generate Electricity

Photovoltaic solar panels generate direct current (DC) electricity. DC electricity means that electrons flow in one direction around a circuit. For Example light bulb connected with a battery. Negative Electrons move from the negative side of the battery, lamp and return to the positive side of the battery. 
Generators generate AC when a conductor of wire is spun next to a magnet. Numerous different energy sources can “turn the handle” of this generator. such as gas or wind, diesel fuel, hydroelectricity, coal, nuclear, solar energy.
AC electricity was chosen for the United state electrical power grid, primarily because of transmission charges of AC electricity very low. Our solar panels generate DC electricity. We use inverters to convert dc electricity into ac electricity.

How Does a Solar Energy System Work?

Here’s an example of how a home solar or commercial solar energy installation works. First, sunlight hits solar panels that are installed on the roof. The panels convert the sun energy into DC. DC flows to an inverter.
The inverter converts the DC electricity to AC. which you can use to power up your home. It’s neat, clean energy, simple and beautiful and it’s affordable all the time and has good efficient.
your solar panels generating energy every sunny day even you are not home to use electricity. what happens at night when your solar panels do not generate DC electricity in real-time?
Don’t worry about that you can store solar energy in batteries at day time. And use it at the night when solar not work. you can also benefit from the net metering system
A typical grid-tied solar system, during peak hours. Solar panels produce more energy than one customer needs. So that free excess Solar energy is fed back into the grid station to use other customers.
The customer gets credit from the supply company for the free excess energy produced. And also use electricity in these credits at night or on cloudy days.

Solar Technologies

You may be surprised to know that the amount of sunlight that reaches the earth's surface in an hour. And a half enough to control the whole world's energy consumption for a full year. Solar energy is a very useful technology to meet our everyday electricity needs.
Solar Energy System is available to you in any size and shape in the market. In the United State Residential solar system installed on rooftops. Businesses are also choosing to install solar panels to minimize their energy costs. Big Companies are building solar power plants to provide frailty electricity to all customers connected to the grid
There are generally two types of solar energy technologies. photovoltaic (PV) and concentrating solar power (CSP). 

Photovoltaic (PV)

photovoltaic (PV) panels generate electricity from the radiation of sunlight. This electronic process occurs naturally in semiconductors. Pv solar panels used to power up small electronics items such as road signs, calculator and large commercial businesses.
Photons hit and ionize semiconductor material of solar panel. Causing outside electrons to break free of their atomic bonds. Due to the semiconductor system, the electrons forced in one direction creating a flow of electrical current.

Concentrating solar power system

Concentrated solar power means to generate electricity (solar power) by using mirrors and lenses. Mirrors or lenses concentrate bigger area of sunlight onto receivers. Receivers convert solar energy into heat (thermal energy).  Heat ( solar heating ) used to generate electricity via heat engine ( usually a steam turbine ) driving a generator or turbine.
Since CSP technologies combine solar energy and convert it to thermal energy that can be stored before powering a generator. They can be flexible electricity providers, a "gas" plant, or can be used as a baseload source. Electricity is almost like standard coal or nuclear plant.
CSPs can be built and integrated into our existing fuel plants to reduce carbon emissions by eleven to 21 GW. Which is why there is electricity from 3 million to 6 million homes. Power can be found.

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