Geothermal energy

            
            
             Geothermal energy is the harvesting of the earths natural heat that is produced by the earths core. In order to harness this heat, the use of shallow ground water and hot water and rock several miles below the earth's surface are utilized. Even further down, the heat of molten rock called magma is also used. One main use this technology is a geothermal heat pump. This technology uses shallow ground water to heat and cool homes and buildings. Almost everywhere on the earth, the top ten feet of the surface maintains a constant temperature of 50-60 F. These Heat pumps consist of shallow buried pipes near a building, heat exchangers, and ductwork running into the building. The heart removed from houses during the process can be used to heat water. .
             Power plants can also be used to generate electricity from geothermal reservoirs. To utilize the earth's natural heat, deep wells, sometimes up to two miles deep have to be drilled into heat reservoirs that are pocketed throughout the planet. From these wells, steam and hot water either rise to the surface naturally or are pumped up. This heat is then used in order to turn turbans and create electricity. There are three main types of power plants that perform these operations. The first are dry steam plants, which directly use geothermal steam to turn turbines. The second, flash steam plants pull deep, high-pressure hot water into lower-pressure tanks and use the resulting flashed steam to drive turbines. The final are binary-cycle plants, which pass hot water by a secondary fluid with a much lower boiling point than water. This causes the secondary fluid to flash to steam, which in turn drives the turbines.
             This method or producing electricity has many very persuasive advantages. The main advantage is that electricity is produced in an efficient, ecologically completely safe way. There are no fossil flues of any kind burned in this process, and therefore would reduce pollution by 100%.