Physic

INTRODUCTION
Fossil fuels are a type of energy source that is used 90% worldwide these days. Fossil fuels are in three different forms: oil, coal, and natural gas. We started to use fossil fuels because first of all it was easy to find and we figured out that they give heat and light when they are ignited, then we started to find new ways to use it such as converting it to other energies and that it can be used to make other things such as fabric. Fossil fuels are being very useful source since the 1800s, but even though fossil fuel is very useful and has lots of advantages it also has disadvantages. How are fossil fuels are created and to make electricity.

Fossil Fuel Power Plant
1.1. Basic concepts
In a fossil fuel power plant the chemical energy stored in fossil fuels such as coal, fuel oil, natural gas or oil shale and oxygen of the air is converted successively into thermal energy, mechanical energy and, finally, electrical energy for continuous use and distribution across a wide geographic area. Each fossil fuel power plant is a highly complex, custom-designed system. Construction costs, as of 2004, run to US$1,300 per kilowatt, or $650 million for a 500 MW unit[citation needed]. Multiple generating units may be built at a single site for more efficient use of land, natural resources and labour. Most thermal power stations in the world use fossil fuel, outnumbering nuclear, geothermal, biomass, or solar thermal plants.
Fossil fuel power stations except for MHD generators have some kind of rotating machinery to convert the heat energy of combustion into mechanical energy, which then operate an electrical generator. The prime mover may be a steam turbine, a gas turbine or, in small isolated plants, a reciprocating internal combustion engine. All plants use the drop between the high pressure and temperature of the steam or combusting fuel and the lower pressure of the atmosphere or condensing vapour in the steam turbine.
Byproducts of power thermal plant...