Geothermal energy is the heat that lies within the earth. This heat energy is obtained from hot rocks present inside the earth. The world ‘geothermal’ comes from the Greek works ‘geo’ refers to earth and ‘thermal’ refers to heat. This renewable energy source keeps produces heat inside the earth which makes it exhaustible to the mankind. Almost 4,000 miles beneath the earth’s surface, this phenomenon known as geothermal energy gets generated deep inside the earth’s core.
Geothermal energy is what is known as a renewable energy source. That is to say, the products used to harness the energy are replaced or reused more than one time. In the case of geothermal energy, the hot water is “sucked up” to the geothermal power plant where either steam, water or both are used to spin a... ... middle of paper ... ...this country, it contributes the equivalent of 60 billion barrels of oil each year. The future looks bright for geothermal energy also, as improvements in drilling technology could yield an increase in geothermal power plants across the world. Bibliography 1.
Volcanoes obtain their energies from such movement and pressure. Volcanoes form at the boundaries of these plate where two types of movement occurs, two plates will collide with each other or the plates will move apart from each other. Some of these plates layers are cooled and are made up of rigid rocks. The affects on the landscape is lava that releases onto the Earth's surface. When that lava comes to the Earths surface, it is red hot and sometimes the temperature is more than 2012 degrees Fahrenheit.
The inner core is approximately 16% of the planet's volume. It is made up of iron and nickel compounds. Nobody knows for sure but the outer core is thought to ... ... middle of paper ... ...ng. There have been many technological breakthroughs that have resulted in increased efficiencies of modern day geothermal electrical plants. I feel that with the current environmental situation that the world now faces a viable method of clean up will include the use of geothermal power plants and resources.
Economically geothermal can both positively and negatively affect the environment. In the long run geothermal energy may one day grow to become a booming form of renewable energy. Geothermal energy is a product that occurs when radioactive decay of minerals in volcanic eruptions and solar energy are digested, and stored in the Earth's surface. Thermal energy is produced from the continuous conduction of heat that emanates from the Earth's core then moves upward to the surface (Watson, 1996).There are a myriad of ways to obtain geothermal energy, but the three main processes are called Flash Steam, Dry Steam, and Binary Cycle. Flash Steam occurs when water pressures exceed 350˚F, and then is extracted under extremely high pressures by flash steam plants, which then starts to resurface and flash off as steam.
Magma consists 96% of molten, or liquid, rock, due to the extremely high temperatures (1300 °F to 2400 °F) located in the Earth’s mantle(4). This molten rock contains very many solids known as “rock forming silicate minerals,” such as carbon, iron, silicon, aluminum, and magnesium, as well as many others. While a large portion of magma is made up of these substances, magma also contains various volatiles that play an extremely vital role in a volcano’s eruption. Volatiles are substances with low melting points that are released as a liquid or gas when an eruption occurs, such as water, carbon dioxide, and sulfur dioxide ... ... middle of paper ... ...onclusion Each aspect of a volcanic eruption plays a significant role when observing the various chemical properties of a volcano. Each phase (magma’s ascent into the magma chamber in the upper crust, migration toward Earth’s surface, eruption, and volcanic plume) requires a specific chemical balance in order to occur.
What is Geothermal Energy? The term geothermal comes from the Greek geo meaning earth and therine meaning heat thus geothermal energy is energy derived from the natural heat of the earth. The heat that flows from the Earth's hot interior due to crustal plate movements, zones of high heat flow, may be located close to the surface where convective circulation plays a signifcant role in bringing the heat close to the surface (World Bank Group, 2012). The Earth's crust, on which we live and depend, is in large part the product of millions of once-active volcanoes and tremendous volumes of magma that did not erupt but instead cooled below the surface. Such persistent and widespread volcanism has resulted in many valuable natural resources throughout the world.
Our planet constantly emits energy in the form of heat, which is propagated from deeper areas to the surface : this is the so-called heat flow or geothermal flux . The heat of the sun warms the earth's surface with a flow that is almost 6,000 times greater than that produced inside the Earth , but the geothermal flux , constant and continuous , is an important source of heating for our Planet : with an average of 0.06 watts per m2 , the entire surface of the Earth radiates an amount of heat equal to about 30 trillion watts. That the Earth becomes warmer deep down is a phenomenon well known to the miners in some mines and tunnels deep temperatures are reached at the limit of human survival ( not so in the caves , where the natural circulation of air and water drops the temperature substantially , so that the increase of temperature with depth is hardly perceptible ) . The heat of the Earth is for the most part due to the release of energy in the processes of decay of radioactive isotopes of some elements such as , for example, potassium , thorium and uranium . Due to the varying thickness of the crust and the different geological situations , which may cause the slope of the hottest materials from deep zones , the geothermal gradient (ie the increase of temperature with depth ) is not equal in all the Earth : in average temperature increases of 2-3 ° C per 100 m of depth , but the increase can vary from 1 up to 5 ° C/100 m .
GEOTHERMAL ENERGY COMES FROM DEEP WITHIN THE EARTH'S CORE. IN THE UPPER MANTEL OF THE CRUST IS WHERE THE HEAT IS PRODUCED MOSTLY BY THE DECAY OF RADIOACTIVE ELEMENTS. THROUGH DIFFUSION THE GEO THERMAL ENERGY IS MOVED TO THE SURFACE OF THE EARTH. MOST COMMON OCCURRENCES OF THIS GEOTHERMAL ENERGY ARE GEYSERS AND HOT SPRINGS. WHEN THE WATER OF HOT SPRINGS AND GEYSERS ARE UNDER GROUND, IT CAN BE AS HOT AS 300 DEGREES FAHRENHEIT.
It is the thermal energy contained in the rock and fluid (that fills the fractures and pores within the rock) in the earth’s crust. Calculations show that the earth originating from a completely molten state would have cooled and become completely solid many thousands of years ago without an energy input in addition to that of sun. It is believed that the ultimate source of geothermal energy is radioactive decay occurring deep within the earth. In, most areas this heat reaches the surface in a very diffuse state. However due to variant geological processes, temperature, porosity, permeability and salinity in different locations around the world, there is a wide scope for identification of viable geothermal regions with the available Geothermal exploration techniques.