As for the working principle of PHS, also the CAES one is really simple. When the power demand is low, excess generation capacity is used to compress the air and store it in an underground cavern (e.g. hard rock caverns, salt caverns, depleted gas fields, aquifer, etc.) or in aboveground man-made tanks, pipes, containers or vessels .
Coal is the most abundant fossil fuel on the planet, and widely used as the source of energy in thermal power stations.It is a relatively cheap fuel, with some of the largest deposits in regions that are stable politically, such as China, India and the United States.
Types of Power Station A power plant can be of several types depending mainly on the type of fuel used. Since for the purpose of bulk power generation, only thermal, nuclear and hydro power comes handy, therefore a power generating station can be broadly classified in the 3 above mentioned types.
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure.
Most of the talk about renewable energy is aimed at electricity production. However, most of the energy we need is heat, which solar panels and wind turbines cannot produce efficiently. To power industrial processes like the making of chemicals, the smelting of metals or the production of microchips ...