Solar Thermal

In a previous article we discussed about the application of solar energy which is about the solar cells. Now we will discuss the application of solar energy, Solar Thermal. The majority of existing power plants currently use fossil fuels as a source of heat to boil water. Water vapor is generated and then rotate the turbine, which ultimately drives the generator to produce electricity. But now a lot of power plants that use solar concentrator systems, using the Sun as a source of heat
.
There are three main types of solar concentrator systems, namely: parabolic, dish/engine, the Tower power plant.A parabolic systems concentrate the Sun's energy by using long U-shaped mirror.

Mirror-mirror are arranged led sunlight and concentrate sunlight onto a pipe containing oils are elongated in the middle of the central point of a parabolic. Oil heat is used to boil water in a conventional steam generator and generate electricity.

Dish engine system using disk mirrors to collect sunlight on a recipient that serves to receive sunlight and heat to the liquid that move inside the machine.
The case resulted in the heat inside the liquid expands and pressing a piston or turbine and generates mechanical energy. Mechanical energy is then used to turn the generator or alternator to generate electricity.

Meanwhile, the system uses the Tower power plants require large numbers of mirrors and placed in a location that is an area to collect sunlight and  focus to the top of a tower where a receiver is placed which contain salt.

The heat is used to dilute the salt which then flows to heat water or other fluids to work through a heat exchanger. The resulting steam is used to drive turbines and steam generators in a conventional rotating. The molten salt is a material that could keep the heat in a long time. It means electricity generated at the time of the Sun could have been set or when the sky is cloudy.