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Geothermal Energy: From Basics to Future
Introduction to Geothermal Energy
1. Definition and Basic Principles of Geothermal Energy:
Geothermal energy originates from the heat within the Earth's sub-surface. It's a renewable energy form that natural processes like radioactive decay continuously generate. The Greek words "geo" (earth) and "therme" (heat) combine to form the term "geothermal", effectively translating to "Earth's heat."
We can harness and use this heat in various ways. The Earth's temperature at shallow depths remains fairly constant throughout the year, which can be utilized to heat and cool buildings with geothermal heat pumps. At greater depths, temperatures can soar to hundreds of degrees Celsius. These conditions create geothermal reservoirs, from which we can extract steam and hot water to power electricity-generating turbines.
2. History of Geothermal Energy Use:
People have been using geothermal energy since ancient times, for bathing, cooking, and heating, with hot springs serving as the source. Historians believe that the oldest known spa, a stone pool fed by a hot spring, was built on Lisan Mountain, China, in the 3rd century BC.
The early 19th century near Pisa, Italy, marked the first industrial use of geothermal energy. Here, people used steam from natural vents to extract boric acid from volcanic mud.
In 1904, the first test of a geothermal power generator took place in Larderello, Italy. This generator successfully lit four light bulbs.
Geothermal Energy: From Basics to Future
Introduction to Geothermal Energy
1. Definition and Basic Principles of Geothermal Energy:
Geothermal energy originates from the heat within the Earth's sub-surface. It's a renewable energy form that natural processes like radioactive decay continuously generate. The Greek words "geo" (earth) and "therme" (heat) combine to form the term "geothermal", effectively translating to "Earth's heat."
We can harness and use this heat in various ways. The Earth's temperature at shallow depths remains fairly constant throughout the year, which can be utilized to heat and cool buildings with geothermal heat pumps. At greater depths, temperatures can soar to hundreds of degrees Celsius. These conditions create geothermal reservoirs, from which we can extract steam and hot water to power electricity-generating turbines.
2. History of Geothermal Energy Use:
People have been using geothermal energy since ancient times, for bathing, cooking, and heating, with hot springs serving as the source. Historians believe that the oldest known spa, a stone pool fed by a hot spring, was built on Lisan Mountain, China, in the 3rd century BC.
The early 19th century near Pisa, Italy, marked the first industrial use of geothermal energy. Here, people used steam from natural vents to extract boric acid from volcanic mud.
In 1904, the first test of a geothermal power generator took place in Larderello, Italy. This generator successfully lit four light bulbs.