Geothermal Energy

In: Science

Submitted By kentricemonique
Words 714
Pages 3
GEOTHERMAL ENERGY

Geothermal energy is one of the oldest sources of energy. It is simply using and reusing (reusable energy) heat from the inside of the earth. Most of the geothermal energy comes from magma, molten or partially molten rock. Which is why most geothermal resources come from regions where there are active volcanoes. Hot springs, geysers, pools of boiling mud, and fumaroles are the most easily exploited sources. The ancient Romans used hot springs to heat baths and homes, and similar uses are still found in Iceland, Turkey, and Japan. The true source of geothermal energy is believed to come from radioactive decay occurring deep within the earth. Electricity is one of the biggest outputs of geothermal energy. It was first recorded to produce electricity in 1904 in Italy. There are now geothermal power plants in operation in New Zealand, Japan, Iceland, the US and elsewhere. For the generation of electricity, hot water, at temperatures ranging from about 700 degrees F, is brought from the underground reservoir to the surface through production wells, and is flashed to steam in special vessels by release of pressure. The steam is separated from the liquid and fed to a turbine engine, which turns a generator. In turn, the generator produces electricity. Spent geothermal fluid is injected back into peripheral parts of the reservoir to help maintain reservoir pressure. If the reservoir is to be used for direct-heat application, the geothermal water is usually fed to a heat exchanger before being injected back into the earth. Heated domestic water from the output side of the heat exchanger is used for home heating, greenhouse heating, vegetable drying and a wide variety of other uses.
Hot water and steam exist at many subsurface locations in the western U.S. These resources can be classified as low temperature (less than 194 degrees F),…...

Similar Documents

Geothermal Energy

...The Home is heated by geothermal energy. To access this constant heat source they Drilled down 250 ft and inserted a vertical pipe. Fluid is pumped down, heated by the earth internal temperature and pumped back up. Heating the home thru radiant tubes in the floors. Wiki Closed loop geothermal heat pumps circulate a carrier fluid (usually a water/antifreeze mix) through pipes buried in the ground. As the fluid circulates underground it absorbs heat from the ground and, on its return, the now warmer fluid passes through the heat pump which uses electricity to extract the heat from the fluid. The re-chilled fluid is sent back into the ground thus continuing the cycle. The heat extracted and that generated by the heat pump appliance as a byproduct is used to heat the house. The addition of the ground heating loop in the energy equation means that more heat is generated than if electricity alone had been used directly for heating. Switching the direction of heat flow, the same system can be used to circulate the cooled water through the house for cooling in the summer months. The heat is exhausted to the relatively cooler ground (or groundwater) rather than delivering it to the hot outside air as an air conditioner does. As a result, the heat is pumped across a larger temperature difference and this leads to higher efficiency and lower energy use.[9] This technology makes geothermal heating economically viable in any geographical location. In 2004, an estimated......

Words: 609 - Pages: 3

Geothermal Energy

...Geothermal energy represents the inner heat of the earth, produced largely by the decay of radioactive elements in the mantle and center. The three ways that the heat is found is both wet and dry steam (wet steam has drops of water in it), hot water and dry volcanic rocks. We know that the temperature of the earth at depths of 25 to 50 km range from 200`C to 1000`C. There are areas of the earth where local concentrations of heat occur, just as mineral concentrations do. Most of these are located along oceanic ridges and continental rifts, such as the ‘Ring of Fire’. Geothermal energy is not free from environmental problems. The steam contains large amounts of hydrogen sulphide with its smell of rotten eggs, and both steam and hot water contain substantial amounts of dissolved minerals, many of which are poisonous to the aquatic life in the streams and rivers into which they are eventually discharged. Also, the removal of steam or water causes the earth to subside in that region. Geothermal energy was first used in the era of the ancient Roman bath house, in which they bathed in hot salt springs. Even though the Romans found an easy way to use geothermal energy, and we still enjoy natural hot springs, the process of removing geothermal energy from the earth to use it efficiently is rather difficult. The only three ways to use geothermal energy is for hot water, space heating and generating electricity. In order to turn geothermal energy into...

Words: 498 - Pages: 2

Energy

... Assignment #1 ASSIGNMENT #1 Energy can be converted from one form to another by one form of energy decreases, other forms increasing, because the total energy has to stay constant and that’s only if you're looking at an isolated object. Potential energy can be converted to Kinetic and kinetic can be converted to potential. (Tillery, Enger, & Ross, 2009, p. 67). Energy can be converted in three basic ways through 3 actions of forces. Gravitational Forces is when gravity accelerates a falling object, its converts its potential energy to kinetic energy. Electric and Magnetic Force Fields can convert charged particles, which electrical fields use forces, possess potential energy of an electric field in a way similar to that of an object in a gravitational field. Frictional Forces can be converted into thermal energy, which is heat, whenever the object slides against another object. An example of an energy being converted from one form to another is a lightbulb. It converts electrical energy to radiant energy. A car can covert chemical energy to mechanical energy. A solar cell converts radiant energy to electrical energy to mechanical energy. A fuel converts to chemical energy to heat energy. What we mean by fossil fuels is that Fossil fuels are energy resources that come from the remains of plants and animals. These remains are millions of years old. Fossil fuels, like coal, oil, and natural gas, provide the energy that powers our lifestyles and our economy....

Words: 658 - Pages: 3

Geothermal Energy

...Geothermal Energy EM 530 – Energy, Economics & the Environment Josh Marder – Nicole Glick – Ali Yasir – Giovanni Rumbolo 4/20/2012 TABLE OF CONTENTS Problem Statement: Introduction: Page 2 Page 2 Past and Present Uses: Page 3 Energy: Economics: Environment: Risk Analysis: Recommendations: Page 7 Page 19 Page 28 Page 32 Page 34 1 PROBLEM STATEMENT There is a looming energy crisis in the United States, as the country is currently relying on a finite supply of fossil fuels. This energy crisis, along with economic growth and environmental stability must be sustained by developing alternative, renewable energy sources. Population is expanding at a geometric rate and each doubling will increase energy demand that will far exceed supply. China and India have recently developed into industrialized nations and several more will follow. Many leading scientists describe the “tipping point” for carbon dioxide emissions as having already passed, meaning it could be too late for renewable energy options to have an impact (McKibben, 2008). However, until the full impact is determined, scientists worldwide should be developing energy alternatives, in order to help stabilize the environment, secure national policy interests and boost to the economy. Geothermal energy represents a sizeable, renewable power source and is one of several alternative energy options that should be utilized. In order for this technology to be able to move forward with any success, it must achieve......

Words: 10392 - Pages: 42

Enhanced Geothermal Systems

...Enhanced Geothermal Systems Ali Yasir Stuart School of Business Enhanced Geothermal Systems Page 1 TABLE OF CONTENTS SECTION 1: SYNOPSIS Scope EGS, a viable option SECTION 2: INTRODUCTION Overview of the Process Basic concept Process Optimization SECTION 3: RESOURCE-BASE IN THE U.S What the facts say? Heat Content SECTION 4: ECONOMICS Potential Cost of Development Levelized Cost of Electricity SECTION 5: EMISSION REDUCTION POTENTIAL Summary of Regulations Potential Environmental Impacts Summary of Environmental Benefits SECTION 6: CURRENT DEVELOPMENTS & GOING FORWARD EGS Worldwide EGS Development in the U.S Obstacles to Further Development in the U.S Policy Options to help promote EGS SECTION 7: CONCLUSION REFERENCES 4 5 6 7 8 9 10 11 12 14 15 16 17 19 20 20 21 23 24 25 26 27 28 30 Enhanced Geothermal Systems Page 2 PREFACE There is a pre-dominating energy crisis in the United States, as the country is currently relying on a finite supply of fossil fuels. This energy crisis, along with economic growth and environmental stability must be sustained by developing alternative, renewable energy sources. Population is expanding at a geometric rate and each doubling will increase energy demand that will far exceed supply. China and India have recently developed into industrialized nations and several more will follow. Many leading scientists describe the “tipping point” for carbon dioxide emissions as having already passed, meaning it could be too late for......

Words: 6300 - Pages: 26

Geothermal Energy a Better Alternative Than Coal Power

...Geothermal Energy a Better Alternative than Coal Power For many years, people have been developing technologies that can improve the quality of life; help save human labor, provide entertainment and make life more comfortable. This technology has led us to depend on different energy-consuming machines like computers, electric motors, televisions, cars, motorcycles etc. because this technology needs energy to function, energy supply is very essential to sustain for the energy-consuming machines that people use. There are renewable and non-renewable sources of energy that are available in the world. Some are fossil fuels like coal, oil and natural gases. Geothermal energy and hydrothermal power are also available. In the Philippines, coal power is the most common source of energy. However, this source of power brings about pollution that can cause harm to the environment. With these observations, some sectors and environmental groups propose an alternative source of power which is geothermal energy. This paper aims to compare geothermal energy and coal power in terms of social implications, environmental impacts and feasibility. Furthermore, this paper aims to know geothermal energy and coal power as well as their advantages and disadvantages. Most energy consumers are not aware of a good energy source as long as it can sustain the technology that they use. This study aims to inform the power consumers on which is a better power source. This will also help them......

Words: 1885 - Pages: 8

Energies

...In physics, energy can be defined as an indirectly observed quantity which comes in many forms including kinetic energy, potential energy, among others. Energy, like mass, is a scalar physical quantity and its S.I unit is joules. There are 2 categories of energy including: renewable (energy that comes from resources which are continually replenished such as sunlight, wind, rain, tides, waves and geothermal heat. Can also be defined as any energy resource that is naturally regenerated over a short time) and non renewable (energy from fossil fuels such as coal, crude oil, natural gas and uranium and exists freely in nature). Renewable energies include: Geothermal energy, Hydro-electric energy, Solar energy, Tidal energy, Nuclear energy, Wind energy, among others while non renewable energies include: petroleum, nuclear power, among others. ENERGY USE IN KENYA Renewable energy can be particularly suitable for developing countries like Kenya. In both rural and remote areas, distribution and transmission of energy generated through fossil fuels (non- renewable) can be difficult and expensive therefore it is easier to supply or use renewable energy. Energy use in Kenya includes: • Biomass (anything plant material or animal waste used as fuel)- 68% • Fossil fuels ( fuel consisting of remains of organism preserved in rocks in the earths crust with high carbon and hydrogen content)- 22% • Electricity (flow of electric power or charge)- 9% • Solar and wind- less than 1%......

Words: 296 - Pages: 2

Geothermal Energy for a Business

...Report Five Research Report The upper management at Eyre Enterprises is considering incorporating new ideas in technology As an Eyre Enterprises engineer or scientist, you have been asked to write a research report so they will have the information to make these decisions. Choose your topic from one of the technical fields listed below. You may also want to define ; this will help you narrow the scope of your topic. Artificial intelligence Fiber optics Forestry management Geothermal energy Human-powered vehicles Lignite-coal mining Organic farming Satellite surveying Solar power Wind power Aquaponics For this report, not all sources will come from books, magazines or websites; some may actually come from personal or telephone interviews, emails, information from experts in the field, or other reliable/credible sources. One of the major tasks for this assignment will be finding out where to seek out the information needed to build a persuasive report. You may want to begin by exploring Requirements: Before you begin Report 5, you must send an email to your instructor explaining the specific and narrowed topic you have chosen (EX: organic farming in an urban environment). o You r topic must be app roved before you begin w riting. o Your email must be of professional quality. If you are asked to revise your email, you may lose points on the assignment. N O T E : The email must be sent by 11:59 p.m. on Wednesday, November 20 th or the report grade will be reduced by ten......

Words: 676 - Pages: 3

Energy

...GEOTHERMAL ENERGY Geothermal energy is one of the oldest sources of energy. It is simply using and reusing (reusable energy) heat from the inside of the earth. Most of the geothermal energy comes from magma, molten or partially molten rock. Which is why most geothermal resources come from regions where there are active volcanoes. Hot springs, geysers, pools of boiling mud, and fumaroles are the most easily exploited sources. The ancient Romans used hot springs to heat baths and homes, and similar uses are still found in Iceland, Turkey, and Japan. The true source of geothermal energy is believed to come from radioactive decay occurring deep within the earth. Electricity is one of the biggest outputs of geothermal energy. It was first recorded to produce electricity in 1904 in Italy. There are now geothermal power plants in operation in New Zealand, Japan, Iceland, the US and elsewhere. For the generation of electricity, hot water, at temperatures ranging from about 700 degrees F, is brought from the underground reservoir to the surface through production wells, and is flashed to steam in special vessels by release of pressure. The steam is separated from the liquid and fed to a turbine engine, which turns a generator. In turn, the generator produces electricity. Spent geothermal fluid is injected back into peripheral parts of the reservoir to help maintain reservoir pressure. If the reservoir is to be used for direct-heat application, the geothermal water is......

Words: 714 - Pages: 3

Research Paper in Geothermal Energy

... A Geothermal power plant uses its geothermal activities to generate power. And this type of natural energy production is extremely environmentally friendly and used in many geothermal spots. And to harness this geothermal energy, a deep hole are being drilled into the earth (much like when drilling for oil) until a significant hot spot is found. And this geothermal power is one of the most renewable energy sources that exist on our planet today. It is also defined as a renewable energy that taps into the heat emanating from earth’s core. And it can be used for many energy uses. Here in the province of Antique on evidence that there is a possible spots for geothermal energy source is located in Brgy. Nato, Anini-y, Antique where hot springs exists. And for this, the assessment of geothermal energy is the first best step (basis for geothermal power plant). Geothermal energy here in Antique is not the concern of the government even though there is evidence and possibility that geothermal energy source here exists. This process required full attention from the government. This energy will be the solution for the major problems in which the province experiencing today. That is why Antique is extremely dependent in power supplies to others in such a way that this power supply can sustain the demand for industrial productions as a whole. Objectives of the study The general objectives of the study enumerates the following * To determine if the geothermal......

Words: 395 - Pages: 2

Energy

...ENERGY TECHNOLOGY S.JITENDRA PAL Department of Chemical Engineering National Institute of Technology Karnataka Surathkal-Karnataka. Assistant Professor Fundamentals of energy and its impact on society and the environment. What is energy? • Energy :defined as the ability or capacity to do work. Energy is measured in BTU (British Thermal Unit) or Joule • According to Max Planck, energy is defined as the ability of a system to cause external action. • The term energy carrier – thus a carrier of the above defined energy – is a substance that could be used to produce useful energy, either directly or by one or several conversion processes • In this respect the following forms of energy are distinguished: mechanical energy (i.e. potential or kinetic energy), thermal, electric and chemical energy, nuclear energy and solar energy etc. Why Energy is needed ? • Think about how you use energy every day. You wake up to an alarm clock. You take a shower with water warmed by a hot water heater. You listen to music on the radio as you dress , u eat breakfast….. And so on……. • Food items, medicines, groceries, the accessories which we use, Cosmetics, electronic appliances, lighting, heating cooling, • Everything needs energy in direct or indirect way Why Energy is needed ? Various sectors of economy- Industry, residential, commercial, transport • Industry- Petroleum Refining , steel, cement, chemical, metal, paper, pharmaceuticals, mining etc •......

Words: 13904 - Pages: 56

Geothermal Piles Literature Review

...Literature Review: Geothermal Piles Contents Introduction 3 Background of Geothermal Piles 4 Description of System 4 Construction and Design 4 Construction Process 4 Design Process 5 Design Issues and Deficiencies 5 Uses and Benefits 5 Feasibility and Testing 5 Carbon Accounting 5 Conclusion 5 References 5 Introduction It has become globally recognised that CO₂ emissions need to be massively reduced, if we are to extend the habitable condition of this planet for future generations. In this vein over the past twenty years there have been massive strides in the development of renewable energy technologies. Geothermal Energy is one of the most promising methods of renewable energy generation in the struggle to find a sufficient replacement for fossil fuels. Geothermal Energy or Ground Thermal Energy can be harnessed in a number of ways, including ground source heat pumping systems integrated into boreholes and wells (Boennec, 2008). Energy Foundations or Thermo-active Ground structures is a broad term encompassing almost all subsurface engineering structure, such as bored or prefabricated piles, retaining walls, base slabs and diaphragm walls (Hemmingway & Long, 2013) for example, that have integrated closed loop ground source heat pumping systems to provide heating capacity in winter time and cooling capacity in summer time for almost any purpose building. However, the focus of this paper is on a particular method of Geothermal Energy......

Words: 1465 - Pages: 6

Energy

... “Energyconservation refers to efforts made to reduce energy consumption. Energyconservation can be achieved through increased efficient energy use, inconjunction with decreased energy consumption and/or reduced consumption fromconventional energy sources” ("Energy conservation," 2011). The twotypes of energy are renewable and nonrenewable. Renewable energy sources areconstantly renewed or restored and include wind (wind power), water(hydropower), sun (solar), vegetation (biomass), and internal heat of the earth(geothermal). On the other hand, nonrenewable energy sources are naturalresources that cannot be replenished. Fossil fuels such as oil, gas, and coalare the most commonly used types of non-renewable energy. However,non-renewable energy sources are being depleted at a rapid rate. In fact, (dueto this depletion) there may not be enough non-renewable energy sources forfuture generations. Additionally, (in this paper) I will discuss methods toconserve energy, save money, and help the environment as well. Because fossil fuels (such as oil,gas, and coal) are the most commonly used types of non-renewable energy, I willfocus on these types of non-renewable energy sources. “World energy consumptionhas increased every year since 1982, with most of the increase occurring indeveloping countries” (Berg, & Hager, 2007). “Additional energy demands inhighly developed nations may be met by increasing the energy efficiency ofthings like appliances, automobiles, and home......

Words: 1558 - Pages: 7

Energy

...Energy Agnese Strayer University Dr. Andrey R. Pavlov Science 110 April 21, 2012 We recognize energy through the concepts of force and motion. When work is done on an object, it gains energy. Energy is made of two types, potential energy which is stored energy and kinetic energy which consists of moving energy. Food is stored energy. It is stored as a chemical with potential energy. When your body uses that stored energy to do work, it then becomes kinetic energy.(Integrated Science, 2008) Any form of energy can be converted to another form. Most technological devices that we use are recognized as energy converters. Energy cannot be created, nor destroyed. This is the reason why it exists in many forms. For example, a light bulb converts electrical energy to radiant energy. It can come in various forms, mechanical, chemical, radiant, electrical, and nuclear. Thermodynamics is the study of energy being converted from one form to another. There are three laws of thermodynamics. The first law states that energy cannot be created or destroyed, but it can be converted from one form to another. The second law states that heat energy can be transferred only from body at high temperature to the body at lower temperature. Heat can only be moved from high to low without external work being performed. If you want to move the heat energy from low temperature reservoir to high temperature reservoir, then something external must intercept in order for that to work.......

Words: 891 - Pages: 4

Geothermal Energy

...Geothermal Energy is the use of the energy in the earth, the natural heat the earth produces. There are several ways to harness this power, and frequently these sources are totally renewable and re-usable. These natural alternatives have been preferred by many over using the fossil fuels so prevalent in society at this time, in that they can be used without the environmental arguments presently going on about fossil fuels. Geothermal energy was first discovered in the seventh century, when mines dug were found to be actually hotter than the surface. This was assumed to be resulting from a heat source located inside the earth, termed Geothermal Energy. Both Romans and Chinese used geothermal springs to heat buildings and gather warm water. The Maoris in New Zealand used geysers to cook their food. Currently, it is also in use in Japan, Iceland, New Zealand, and California as a commonly seen source of energy. All these locations use the energy to heat homes, power electricity, and other such uses. Geothermal is gathered from three sources – Dry Steam Fields, Wet Steam Fields, and Hot Water Fields. Dry Steam, the easiest one to harvest, is also the one seen very rarely. The conditions of having large amounts of steam underground ready to come up and power turbines are not seen often. A few, however, do exist, and for example, one in Larderello, Italy, has been producing electricity for over a hundred years. Wet Steam Fields are more common, but also not...

Words: 850 - Pages: 4