What is solar energy?

 

Solar energy is a clean, inexhaustible in most of the known energy. Absorption of solar radiation as heat, light and other radiation emitted by the sun, playing, and led to almost all of the Earth's natural processes. Natural sources to provide a large number of available energy, our energy, we need to have little effect on the environment. The use of solar and other forms of renewable energy dependency, reduce fossil fuel energy production and reduce carbon dioxide emissions a major factor in global warming, environmental issues generally.

 

There are two types of solar

 

Photovoltaic (PV) or solar power

 

Based on a semiconductor technology, the light energy is converted into direct current (DC) electricity, or it can be used immediately, or stored in the battery, or use later. Photovoltaic panels are becoming increasingly popular because of its versatility and ease of installation in buildings or other structures.

Providing clean, renewable energy sources to reduce the use of electricity companies.

Grid, remote communities, emergency phones and other infrastructure construction, PV can be used to provide a reliable supply of electricity.

The disadvantage of the photovoltaic cell panel is high cost, the energy conversion rate is low (about 13-19%). In addition, you need to convert direct current (DC) of the "investment" as the alternating current (AC), so that the energy can be used in many cases, will lead to additional energy loss.

 

Solar Thermal

 

Refers to a system, which use the sun's energy to generate heat can be used.

This process is 4-5 times more efficient than the PV in converting sunlight into usable energy, making it more profitable units generated energy, and may have a return to the PV value of 2.5 times the speed ratio.

It can be used to heat water of domestic or actively heated.

Solar water heaters supplement hot water, gas hot water heater or TVU big decline in energy costs.

The thermal energy from the sun may be used for a wide range of applications, including hot water, heating, swimming pool heating, industrial process heat, and even production cooling.They cooling by absorption technical rption use.