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Renewable Energy
Renewable energy doesn't get used up, in the way that coal and oil do. It is still there the next day, such as sunshine; wind power; water power from rivers and oceans; and geothermal power, which uses the heat deep below the surface of the earth.
2,098 Questions
What are the harmful effects of geothermal energy?
There are not many harmful effects. There is no pollution, or greenhouse gases emitted. It is a clean, green way of producing electricity.
There have been reports that drilling down through the bedrock leads to instability in some places. The same has been reported from coal and oil mining.
What is a sentence for the term biomass?
The use of biomass for fuel can reduce the consumption of oil and coal.
Is geothermal a renewable or nonrenewable resource?
Geothermal energy is considered a renewable resource because it is derived from the heat of the Earth, which is continuously produced within the planet's core. This heat can be harnessed to generate electricity and heat buildings with minimal impact on the environment.
What energy source is renewable?
Renewable energy sources are
Solar, wind, Geothermal, Tidal are prime energy sources
What is renewable energy and how are fossil fuels different from renewable energy?
Fossil fuels formed long ago (millions of years). Oil, coal, natural gas. once they're used up it would take many millions of years to replace them.
Renewable energy is things like trees (tens to hundreds of years to replace)
and solar power, water power, wind energy (constantly replenished).
All power comes from the sun - except nuclear power.
What limits the use of geothermal energy?
The main limitations of geothermal energy include the high upfront costs of exploration and drilling, the limited availability of suitable geothermal sites, and the potential for reservoir depletion or cooling over time. Additionally, there are environmental concerns related to the release of greenhouse gases and other pollutants during geothermal operations.
What are the best geothermal companies in the world?
The Geothermal Energy Expo is the world's largest gathering of geothermal industry vendors exhibiting their projects, equipment, services and state of the art technology to the geothermal community
The worlds best geothermal companies are:
Calpine Corporation CPN 12.35 5.46B
Ormat Technologies (ORA) top geothermal company 38.71 1.76B
Magma Energy Corp MXY 2.00* 459.92M
Raser Technologies (RZ) geothermal power / electric motors 1.80 135M
US Geothermal Power (UGTH) American geothermal energy developer 1.57 96M
Polaris Geothermal Inc. GEO 0.90 93M
Nevada Geothermal (NGLPF) USA geothermal energy company 0.91* 86M
Western Geopower Corp. WGP 0.24 66M
Sierra Geothermal (SRA.V) diversified geothermal power developer 0.27 20M
What are the positive and negtive aspects of using geothermal energy?
With the arrival of a power plant, the heat and fluid extracted from geothermal sources can deplete the efficiency and volume of geysers and surface hot springs.
water released from geothermal cooling towers may contain dissolved toxic compounds and substances such as boron, arsenic and mercury.
The chance of earthquakes is increased when power plants inject water below Earth's surface in order to keep the pressure of the steam up
What are the benefits of geothermal energy?
Geothermal has wide spread applications on all levels, from National and regional installations to public and commercial buildings right to private home owner applications. The key benefit is that it takes natural heat and cool energy stored in the earth and cycles it through modern heat pump technology to produce a never ending source of energy with little impact on the environment. For the private home owner, it can mean also mean a substancial savings within several years of installation. Based on the rising prices of fuels around the world, geothermal energy is a consistent and reliable alternative energy source that should be given serious government and industry recognition.
The tulip tree (liriodendron tulipifera) was adopted as the official State tree of Indiana by an act of the State legislature approved on March 3, 1931
What are examples of renewable and nonrenewable resources?
Renewable resources include solar energy, wind energy, and tidal energy, which can be naturally replenished. Nonrenewable resources include fossil fuels such as coal, oil, and natural gas, which are finite and take millions of years to form.
A renewable source of energy (sunlight, wind or water power, etc) is an better option to generate electricity because it is a natural source of energy and renews itself again and again. It also releases no carbon dioxide pollution into the greenhouse gases in the atmosphere.
A:Renewable energy sources are much better in the long run. Renewable energy sources never run out. We can constantly use renewable energy sources however non-renewable energy sources will run out eventually with consistent consumption. A great example of a renewable energy sources is solar power. We will never run out of energy from the sun. A:They are important because they can be replenished and they do not harm our environment and they are eco-friendlyGeothermal energy is found in regions with high volcanic activity, such as the Ring of Fire in the Pacific Ocean. It can also be found in areas with hot springs and geysers, like Yellowstone National Park in the United States. Additionally, geothermal resources can be harnessed in tectonically active zones.
Remember, a geothermal heat pump doesn't create heat by burning fuel, like a furnace does. Instead, in winter it collects the Earth's natural heat through a series of pipes, called a loop, installed below the surface of the ground or submersed in a pond or lake. Fluid circulates through the loop and carries the heat to the house. There, an electrically driven compressor and a heat exchanger concentrate the Earth's energy and release it inside the home at a higher temperature. Ductwork distributes the heat to different rooms. In summer, the process is reversed. The underground loop draws excess heat from the house and allows it to be absorbed by the Earth. The system cools your home in the same way that a refrigerator keeps your food cool - by drawing heat from the interior, not by blowing in cold air. The geothermal loop that is buried underground is typically made of high-density polyethylene, a tough plastic that is extraordinarily durable but which allows heat to pass through efficiently. When installers connect sections of pipe, they heat fuse the joints, making the connections stronger than the pipe itself. The fluid in the loop is water or an environmentally safe antifreeze solution that circulates through the pipes in a closed system. Another type of geothermal system uses a loop of copper piping placed underground. When refrigerant is pumped through the loop, heat is transferred directly through the copper to the earth. As with any heat pump, geothermal and water-source heat pumps are able to heat, cool, and, if so equipped, supply the house with hot water. Some models of geothermal systems are available with two-speed compressors and variable fans for more comfort and energy savings. Relative to air-source heat pumps, they are quieter, last longer, need little maintenance, and do not depend on the temperature of the outside air.
See http://geothermalexperts.net/ for more information.
How does ocean thermal energy conversion - OTEC - work?
Ocean Thermal Energy Conversion (OTEC) uses the difference in temperature between surface seawater and deep down seawater to generate electricity. It is a clean, renewable energy source that has the potential to free many economies from their dependence on oil.
How a closed system works:
- Warm surface water is hot enough to boil a fluid with a low boiling point, such as ammonia.
- The gas from the boiling fluid creates enough pressure to drive a turbine that generates electricity.
- The gas is then cooled by passing it through cold water pumped up from the ocean depths.
- The gas condenses back into a liquid that can be used again.
- The water is returned to the deep ocean.
How an open system works:
- Warm surface sea water is pumped into a low pressure vacuum chamber (1% to 3% atmospheric pressure).
- The water boils and the steam drives a turbine and generates electricity.
- Cold deep level water cools the steam into fresh (desalinated) water, suitable for drinking or irrigation.
How a hybrid system works:
- Warm surface sea water is pumped into a vacuum chamber, as above.
- The water steam boils ammonia in a heat exchange.
- The ammonia gas (steam) produces electricity.
- Cold deep level water cools both systems and produces liquid ammonia which is then used again, and desalinated water.
There are pilot plants running in Hawaii and many other places round the world. As the price of fossil fuel rises this technology becomes more and more attractive and economical. A lot of energy is used in these processes so the most suitable places need to:
- Have easy access to cold water
- Have easy access to warm water
- Have safe sheltered locations from storm and surf
- Be close to the electricity grid
How much does geothermal cost?
The cost of geothermal energy can vary depending on factors such as location, system size, and installation complexity. On average, the cost to install a geothermal heat pump system ranges from $10,000 to $30,000 per unit for residential applications. However, geothermal energy systems have lower operational and maintenance costs compared to traditional heating and cooling systems, which can help offset the initial investment over time.
Answer 1: A compressional wave is a wave that is close together and transverse waves are waves that are going the way the wave travels.
Answer 2: Basically, it's a sound wave. A compressional wave is a wave that travels back and forth, moving with compression. Scince it is a mechanical wave it must use a medium to travel though. A sound wave is a good example of a compressional wave.
A compressional wave is a wave that travels back and forth, moving with compression. Scince it is a mechanical wave it must use a medium to travel though. A sound wave is a good example of a compressional wave.
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its since, stupid.
Disadvantages of geothermal power plant?
Some disadvantages of geothermal power plants include the high initial capital costs for drilling and infrastructure, the limited geographical locations where geothermal energy can be harnessed effectively, and the potential for reservoir depletion or subsidence over time. There are also concerns about the release of greenhouse gases and other pollutants from geothermal operations.
What are the advantages of geothermal energy?
The main advantage is that Geothermal is a renewable resource.
It may last for centuries.
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Geothermal is renewable and has a low carbon footprint, characteristics it shares with solar and wind power. Geothermal has the additional advantage of being in operation nearly all the time, characteristics it shares with hydro and tidal power.
Geothermal power can produce some pollution in the form of gasses coming from deep within the earth, though not all forms of geothermal do this.
idk what it is....
Advantages:
1) Geothermal energy generally involves low running cost where you can save 80%.
2) Geothermal energy is renewable because there will always be heat generated below ground.
3) No fossil fuels are burned or used during production.
4)Dependance on fossil fuels decrease with the increase in the use of geothermalenergy which urges all other companies to adopt a safer cleaner resource
It will never run out during the life cycle of humans. We will be extinct first.
well its environmentally friendy to our earth
It does not pollute the atmoshpere and has little or no harm towards the evnironment or ozone layer.
It is a renewable resource
Is copper renewable or nonrenewable?
Copper is considered a nonrenewable resource because it is mined from the Earth's crust and cannot be replenished at a rate that matches its current rate of consumption.
Is nuclear energy renewable or non-renewable?
Nuclear energy is nonrenewable, as it depends on limited supplies of the fissionable isotope Uranium-235. Uranium is dug out of the ground. Some day there will be none left. Fissionable fuels (and other elements that can be used in reactors to make them) are "stellar fossil fuels" made more than 6 billion years ago by exploding supernovas and when they run out like the chemical fossil fuels made millions of years ago will be all gone and will never replenish while the human species exists.
The supplies of fissionable isotopes can be extended (but not renewed) by breeding more in reactors. It involves making plutonium from non-fissile uranium in breeder reactors: Uranium-233 from Thorium-232 and Plutonium-239 from Uranium-238. This will extend the amount of reactor fuels by roughly a factor of 100, but beyond that no more fissionable isotopes can be produced. When we run out we run out. Also, plutonium is a key ingredient for nuclear bombs. While this is a known way to produce a longer lived supply of nuclear energy, the dangers of making this fuel are such that the international community frowns strongly upon the use of breeder reactors because of their proliferation issues. Bernard Cohen argues that breeder reactors, using fuel dissolved in the oceans, can supply all of Earth's energy needs for billions of years, even after the sun explodes, which should categorize them as "renewable".
Traditional nuclear fission power plants use only a tiny fraction of the uranium in the fuel rods before actinides build up, poisoning the reaction. However, the nuclear fuel rods can be reprocessed into new fuel rods. The actinide components each have various uses in industry and for medical purposes. In some types of reactors called "breeder reactors", casing of thorium or depleted uranium is built around the nuclear reactor, causing the thorium or depleted uranium to capture a neutron and become uranium or plutonium respectively. When reprocessed, the uranium or plutonium can be extracted and used to power additional reactors.
The US does not use breeder reactors. France has some, but the majority of nuclear reactors in the world are not of this type. So in that sense we're back to non-renewable.
If we someday make workable fusion reactors, we will have an effectively unlimited supply of nuclear energy, because there is far more hydrogen available to use as fuel than there is uranium and thorium. However this is still nonrenewable as the amount of hydrogen on earth will not increase significantly (tiny amounts arrive on meteorites).
A good source for information about energy the International Energy Agency. They define renewable energy as being derived from natural processes that are replenished constantly. However both fission and fusion will be able to supply our energy needs for SO long it's crazy.
What are inexhaustible resources?
Renewable means that we can replace the resource as we need it or as we use it up. This includes products made from plants and animals that can be managed. Managed in this case means both grown under cultivation (wood, grains, food) or used at a rate that is below the natural replacement rates (e.g. wild fish stocks).
Inexhaustible means will never run out. The sun will die in about five billion years' time. So sunlight is not inexhaustible. Before that time, the earth and we will be frozen and dead, so wind, tides, water, geothermal and all other resources will also be finished. So nothing is inexhaustible, strictly speaking.
However, if we just consider these resources to be available as long as the human species is around to need them then we can say that there is no effective difference between inexhaustible and renewable resources.
So all the following are both inexhaustible and renewable:
- solar power
- wind
- wave and tidal and hydro-electric
- geothermal
- biomass and biofuel
- water
- plants, crops, vegetation, trees and forests (so long as we keep replanting and regrowing at the same rate).
What are the advantages of thermal energy?
- Significant Cost Saving: Geothermal energy generally involves low running costs since it saves 80% costs over fossil fuels and no fuel is used to generate the power. Since, no fuel is required so costs for purchasing, transporting and cleaning up plants is quite low.
- Reduce Reliance on Fossil Fuels: Dependence on fossil fuels decreases with the increase in the use of geothermal energy. With the sky-rocketing prices of oil, many countries are pushing companies to adopt these clean sources of energy. Burning of fossil fuels releases greenhouse gases which are responsible for global warming.
- No Pollution: This is one of the main advantage of using geothermal energy since it does not create any pollution and help in creating clean environment. Being the renewable source of energy, geothermal energy has helped in reducing global warming and pollution. Moreover, Geothermal systems does not create any pollution as it releases some gases from deep within the earth which are not very harmful to the environment.
- Direct Use: Since ancient times, people having been using this source of energy for taking bath, heating homes, preparing food and today this is also used for direct heating of homes and offices. This makes geothermal energy cheaper and affordable. Although the initial investment is quite steep but in the long run with huge cost saving it proves quite useful.
- Job Creation and Economic Benefits: Government of various countries are investing hugely in creation of geothermal energy which on other hand has created more jobs for the local people.
Can you classify energy sources into the renewable and non-renewable groups?
When you use petrol, gas, coal... basically anything you burn to produce heat and then turn this energy into electricity of mechanical energy (a car engine) you are using a raw material that is not going to be replaced. In fact petrol, gas and coal takes million of years to be naturally produced.
When you are burning wood (from trees), the tree grows again... eventually if you let it do so. This energy can be "kind of renewable" as long as another tree grows as fast in order to replace the one you cut.
Wind mills, Solar cells or Turbines in the sea take their energy from wind, solar heat, and the attraction from the moon on the sea. There are based on "natural" energy. This energy will be available as long as our planet exists.
There are a couple of sites explaining how to build home made wind mills reusing common old materials... not very efficient but cheap and allows recycling... that is "using again something that is non renewable for another purpose".
The word geothermal comes from the Greek words geo(earth) and therme(heat). So geothemal energy is heat from within the earth.
It is used to heat homes, buildings, and other public areas. Alternatively, sometimes the heat is used to generate electricity. One country that uses geothermal energy regularly is Iceland.
