Skip to main content

Home/ qmstech2/ Group items matching "sustainable" in title, tags, annotations or url

Group items matching
in title, tags, annotations or url

Sort By: Relevance | Date Filter: All | Bookmarks | Topics Simple Middle
4More

Sustainable energy - Wikipedia, the free encyclopedia - 1 views

en.wikipedia.org/...Sustainable_energy
shared by sokolkyl00 on 22 Oct 12 - Cached
  • Sustainable energy is the Sustainable provision of energy that meets the needs of the present without compromising the ability of future generations to meet their needs.
  • Sustainable energy is the Sustainable provision of energy that meets the needs of the present without compromising the ability of future generations to meet their needs.
  • Sustainable energy is the Sustainable provision of energy that meets the needs of the present without compromising the ability of future generations to meet their needs. Technologies that promote Sustainable energy include renewable energy sources, such as hydroelectricity, solar energy, wind energy, wave power, geothermal energy, and tidal power, and also technologies designed to improve energy efficiency.
  • ...1 more annotation...
  • At this rate, many experts believe that solar energy is not efficient enough to be economically sustainable given the cost to produce the panels themselves.
1More

Sustainability Basic Information - 0 views

www.epa.gov/...basicinfo.htm Sustainability sustainable
shared by olearydev99 on 15 Mar 13 - Cached
  • olearydev99 on 15 Mar 13
     
    "What is sustainability? Sustainability is based on a simple principle: Everything that we need for our survival and well-being depends, either directly or indirectly, on our natural environment.  Sustainability creates and maintains the conditions under which humans and nature can exist in productive harmony, that permit fulfilling the social, economic and other requirements of present and future generations."
12More

Geothermal Energy - 3 views

www.renewableenergyworld.com/...geothermal-energy geothermal sustainable
shared by wooddan99 on 08 Mar 13 - Cached
  • Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.
  • Hot water near the surface of Earth can be used directly for heat.
  • Wells can be drilled into underground reservoirs for the generation of electricity. Some geothermal power plants use the steam from a reservoir to power a turbine/generator, while others use the hot water to boil a working fluid that vaporizes and then turns a turbine.
  • ...3 more annotations...
  • Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.
  • Hot dry rock resources occur at depths of 3 to 5 miles everywhere beneath the Earth's surface and at lesser depths in certain areas.
  • of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely hig
  • brownale99 on 08 Mar 13
     
    "Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma."
  • ...3 more comments...
  • dittrichcai99 on 08 Mar 13
     
    "Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma."
  • faglejoh98 on 11 Mar 13
     
    "Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma."
  • vanierfel98 on 11 Mar 13
     
    Geothermal energy can be easily found close to the surface or far down in the core.
  • parkergar99 on 11 Mar 13
     
    "Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma."
  • glinbizzivic98 on 11 Mar 13
     
    "Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma."
8More

Green Rock Energy - Geothermal Energy - Sustainability - 0 views

www.greenrock.com.au/geothermalSustainability.php geothermal sustainable
shared by brownale99 on 22 Oct 12 - No Cached
  • The Benefits "Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power. Depending on the nature of the resource and the reservoir, individual production wells have the potential to generate consistent supplies of base load power for decades."
  • Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power.
  • individual production wells have the potential to generate consistent supplies of base load power for decades.
  • ...2 more annotations...
  • Base load electricity generated from geothermal energy is clean, renewable and has minimal impact on the environment.
  • Unlike burning fossil fuels, the process emits no greenhouse gases, pollution or hazardous wastes.
  • messinaaar98 on 22 Oct 12
     
    "The Benefits "Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power. Depending on the nature of the resource and the reservoir, individual production wells have the potential to generate consistent supplies of base load power for decades.""
  • gazdiknic99 on 11 Mar 13
     
    main idea, supporting facts, and conclusion
  • brownale99 on 11 Mar 13
     
    ""Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power. Depending on the nature of the resource and the reservoir, individual production wells have the potential to generate consistent supplies of base load power for decades.""
4More

Is Tidal Energy a sustainable way to produce power? | GreenAnswers - 4 views

greenanswers.com/...-sustainable-way-produce-power tide sustainable
shared by rodriguezjos99 on 22 Oct 12 - No Cached
  • It does not create any emissions that may contribute to global warming.
  • Tidal energy is most sustainable and beneficial as a tool in a larger tool belt of renewable energy sources needed to meet our energy demands.
  • albrechtjen99 on 08 Mar 13
     
    "tidal power is a renewable source of electrical power that is used in addition to other sources of energy. It does not create any emissions that may contribute to global warming. Tidal power is not entirely the most consistent source of electricity though, as it does not adhere to peak usage schedules, due to daily tidal cycles (differing energy harnessing potential between Ebb and Flood tides). Tidal energy is most sustainable and beneficial as a tool in a larger tool belt of renewable energy sources needed to meet our energy demands."
  • rodriguezjos99 on 11 Mar 13
     
    "Yes, tidal power is a renewable source of electrical power that is used in addition to other sources of energy. It does not create any emissions that may contribute to global warming. Tidal power is not entirely the most consistent source of electricity though, as it does not adhere to peak usage schedules, due to daily tidal cycles (differing energy harnessing potential between Ebb and Flood tides). Tidal energy is most sustainable and beneficial as a tool in a larger tool belt of renewable energy sources needed to meet our energy demands."
1More

Sustainability Standards « biofuelwatch - 0 views

www.biofuelwatch.org.uk/...sustainability-standards biofuel sustainable
shared by schmettererdav00 on 25 Sep 13 - No Cached
  • Biofuelwatch has released a new report, ‘Sustainable Biomass: A Modern Myth’. It explores the certification companies certifying biomass as Sustainable, the UK government’s proposed sustainability criteria for biomass, and developer’s ‘promises’ to source Sustainable biomass.
1More

Sustainability - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Sustainability Sustainability sustainable
shared by olearydev99 on 15 Mar 13 - Cached
  • olearydev99 on 15 Mar 13
     
    "Sustainability is the capacity to endure"
3More

Fuel Cells for a Sustainable Future? | Tyndall°Centre for Climate Change Rese... - 0 views

www.tyndall.ac.uk/...fuel-cells-sustainable-future fuel cell sustainable
shared by carpenteraut98 on 11 Mar 13 - No Cached
  • >It is found that there are both technical and non technical barriers to the development of stationary fuel cells as a major component towards sustainable energy.
  • >It is found that there are both technical and non technical barriers to the development of stationary fuel cells as a major component towards sustainable energy.
  • carpenteraut98 on 11 Mar 13
     
    "It is found that there are both technical and non technical barriers to the development of stationary fuel cells as a major component towards sustainable energy"
1More

What is the sustainability of solar energy? - Yahoo! Answers - 2 views

answers.yahoo.com/...index solar energy yahoo answers sustainable
shared by dextereli99 on 11 Mar 13 - No Cached
  • The will burn for billions of years, it won't run out any time soon. This is sustainable because it will not deplete in the near future. The harder question is if the materials that go into a solar cell are sustainable. They use primarily silicon, which is one of the most abundant materials on earth. But they can also use other things, like metals (copper, silver, gold), and some toxic chemicals (arsenic, cadmium) etc. The sustainability of these materials is questionable. These materials are recyclable, and it is thought 99% of a solar cell can be recycled. But the production of them does has some toxic site affects, which means we have to balance the 'clean' energy production of the cells with the bad by products of their manufacturing process.
2More

Wind Energy - 0 views

www.sustainablestuff.co.uk/windpowerenergy.html wind sustainable
shared by mcgrawjac98 on 08 Mar 13 - No Cached
  • Wind Energy, like Solar Energy is fully sustainable, being generated by natural wind flows, which in the U.K. are reliable enough to guarantee a stable, near constant supply of energy. Wind Power can be easily set up, either at home (see related article) or on a larger scale, by energy suppliers keen to meet government targets to reduce carbon emissions that are produced by conventional power stations.
  • mcgrawjac98 on 08 Mar 13
     
    "Wind Energy, like Solar Energy is fully sustainable, being generated by natural wind flows, which in the U.K. are reliable enough to guarantee a stable, near constant supply of energy. Wind Power can be easily set up, either at home (see related article) or on a larger scale, by energy suppliers keen to meet government targets to reduce carbon emissions that are produced by conventional power stations."
3More

How Geothermal Energy Works | Union of Concerned Scientists - 1 views

www.ucsusa.org/...w-geothermal-energy-works.html geothermal sustainable
shared by knightoli99 on 11 Mar 13 - No Cached
  • Many regions of the world are already tapping geothermal energy as an affordable and sustainable solution to reducing dependence on fossil fuels, and the global warming and public health risks that result from their use. For example, more than 8,900 megawatts (MW) of large, utility-scale geothermal capacity in 24 countries now produce enough electricity to meet the annual needs of nearly 12 million typical U.S. households (GEA 2008a). Geothermal plants produce 25 percent or more of electricity in the Philippines, Iceland, and El Salvador.
  • parkergar99 on 11 Mar 13
     
    "The U.S. Department of Energy found that heat pumps can save a typical home hundreds of dollars in energy costs each year, with the system typically paying for itself in 8 to 12 years. Tax credits and other incentives can reduce the payback period to 5 years or less.10                                                  "
  • knightoli99 on 11 Mar 13
     
    "Heat from the earth can be used as an energy source in many ways, from large and complex power stations to small and relatively simple pumping systems. This heat energy, known as geothermal energy, can be found almost anywhere-as far away as remote deep wells in Indonesia and as close as the dirt in our backyards. FROM OUR BLOG The Latest on Renewable Energy from Our Experts and Analysts Will Clean Energy Research and Development Be Sequestered? Laura Wisland PTC Extension Already Making a Big Difference for Wind Steve Clemmer The Local Energy Movement: Coming to a Town Near You Laura Wisland Subscribe to the Energy blog feed Many regions of the world are already tapping geothermal energy as an affordable and sustainable solution to reducing dependence on fossil fuels, and the global warming and public health risks that result from their use. For example, more than 8,900 megawatts (MW) of large, utility-scale geothermal capacity in 24 countries now produce enough electricity to meet the annual needs of nearly 12 million typical U.S. households (GEA 2008a). Geothermal plants produce 25 percent or more of electricity in the Philippines, Iceland, and El Salvador."
8More

Tidal Power | BC Sustainable Energy Association - 1 views

www.bcsea.org/...tidal-power tide cost
shared by lemairenat98 on 11 Mar 13 - No Cached
  • However, estuaries are among the world’s most productive and sensitive ecosystems, and barrages cause large disruptions to their natural processes. We will therefore not further consider barrage based tidal power as a truly sustainable energy resource.
  • While there are non-tidal based ocean currents such as the Gulf Stream, those are usually too diffuse to be a practical energy source. The tides cause water to flow inwards from the ocean twice a day during flood tides, and outwards during ebb tides. Additional monthly and annual cycles vary the strength of this current on a monthly and annual basis. Narrow and shallow constrictions produce the fastest and most powerful movements, whose energy can be captured using submerged turbines.
  • BC Hydro’s 2002 Green Energy Study for BC estimated the realistic energy potential for tidal current energy generation in BC to be 20 TWhrs/year. The estimated cost was 11 cents/kWhr for a large (800 MW) site, and 25 cents/kWhr for a small (43 MW) site. The best sites are in the Strait of Georgia and Johnstone Strait, which are both relatively close to the main centers of consumption.
  • ...2 more annotations...
  • The second type is based on utilizing the fast-flowing marine currents caused by tidal action. While there are non-tidal based ocean currents such as the Gulf Stream, those are usually too diffuse to be a practical energy source. The tides cause water to flow inwards from the ocean twice a day during flood tides, and outwards during ebb tides.
  • Nevertheless, it is a truly sustainable energy source which is also very predictable. It is not subject to the vagaries of weather or climate change, and while the energy varies, it follows a predictable pattern that is known many years in advance.
  • mchughkon99 on 11 Mar 13
     
    oceanic tides 
  • murphymat98 on 11 Mar 13
     
    The second type is based on utilizing the fast-flowing marine currents caused by tidal action....it is a truly sustainable energy source which is also very predictable. It is not subject to the vagaries of weather or climate change, and while the energy varies, it follows a predictable pattern that is known many years in advance.
  • lemairenat98 on 15 Mar 13
     
    " costs are expected to fall to between 5 and 7 cents/kWhr."
1More

Getting to Solar Energy Sustainability | The Energy Collective - 2 views

theenergycollective.com/...ng-solar-energy-sustainability solar sustainable
shared by sokolkyl00 on 25 Sep 13 - No Cached
  • I recognize this may seem like fantasy, but if the proponents of solar energy and other clean energy alternatives really want it to succeed they must get off life support, be free from the addiction to unsustainable subsidies, and given a chance to grow and thrive on their own in a healthy, competitive market environment where innovation and hard work create sustainable market equilibrium.
3More

Biofuels - NYS Dept. of Environmental Conservation - 0 views

www.dec.ny.gov/43310.html sustainable biofuel
shared by schmettererdav00 on 24 Sep 13 - No Cached
  • y growing plants can be achieved by producing biofuels from
  • Balance between the carbon released by biofuels and carbon uptake by growing plants can be achieved by producing biofuels from feedstocks (raw materials) that come from managed forests or sustainably cultivated crops.
  • schmettererdav00 on 24 Sep 13
     
    Balance between the carbon released by biofuels and carbon uptake by growing plants can be achieved by producing biofuels from feedstocks (raw materials) that come from managed forests or sustainably cultivated crops.
1More

Sustainable - Definition and More from the Free Merriam-Webster Dictionary - 0 views

www.merriam-webster.com/...sustainable sustainable
shared by sconzomic99 on 14 Mar 13 - No Cached
  • of, relating to, or being a method of harvesting or using a resource so that the resource is not depleted or permanently damaged
3More

Solar power - Sustainable green energy to protect our economy and environment | PARTHA ... - 2 views

saferenvironment.wordpress.com/...ct-our-economy-and-environment solar sustainable
shared by sokolkyl00 on 11 Mar 13 - No Cached
  • A Solar Energy system can operate entirely independently, not requiring a connection to a power or gas grid at all. Systems can therefore be installed in remote locations, making it more practical and cost-effective than the supply of utility electricity to a new site.
  • A Solar Energy system can operate entirely independently, not requiring a connection to a power or gas grid at all. Systems can therefore be installed in remote locations, making it more practical and cost-effective than the supply of utility electricity to a new site.
  • bolendev99 on 11 Mar 13
     
    "It offers much more self-reliance than depending upon a power utility for all electricity."
8More

Wind Turbine Syndrome | Wind energy: The "least sustainable energy option" - 0 views

www.windturbinesyndrome.com/...east-sustainable-energy-option wind energy cost sustainable pollution co2
shared by mcdermottaar99 on 12 Mar 13 - No Cached
  • Wind turbine installations impact vast amounts of land, far more than traditional power plants.
  • Raptors, bats and other beautiful flying creatures continue to be sliced and diced by wind turbines.
  • Principal health issues are associated with noise – not just annoying audible noise, but inaudible, low-frequency “infrasound” that causes headache, dizziness, “deep nervous fatigue” and symptoms akin to seasickness. “Wind turbine syndrome” also includes irritability, depression, and concentration and sleep problems. Others include “shadow flicker” or “strobe effect” from whirling blades, which can trigger seizures in epileptics, “vibroacoustic” effects on the heart and lungs, and non-lethal harm to animals. Serious lung, heart, cancer and other problems have been documented from rare earth mining, smelting and manufacturing in China, under its less rigorous health, workplace and environmental regulations.
  • ...3 more annotations...
  • Wind turbine installations require vast amounts of steel, copper, rare earth metals, fiberglass, concrete, rebar and other materials for the turbines, towers and bases.
  • Wind turbines are supposed to reduce pollution and carbon dioxide emissions. But because backup generators must repeatedly surge to full power and back to standby, as wind speed rises and falls, they operate inefficiently, use more fuel and emit more – much like cars forced to stop repeatedly on freeways.
  • Even huge subsidies cannot cure wind power’s biggest defects: its electricity costs far more than coal, gas or nuclear alternatives – and its intermittent nature wreaks havoc on power grids and consumers.
    • dpurdy
      dpurdy on 21 Mar 13
       
      Be cautious as this site is obviously anti wind power. The points might be valid though.
  • mcdermottaar99 on 12 Mar 13
     
    wind turbine impacts 
2More

How sustainable is wind power? | OregonLive.com - 0 views

blog.oregonlive.com/...sustainable_is_wind_power.html wind sustainable
shared by carusonepay99 on 08 Mar 13 - No Cached
  • When looking at a wind powered electric generator, many people see a permanent source of renewable electricity. The problem with this image is that wind generators have shorter life spans than the term “sustainable” would imply. Wooden windmills in Holland that used to power industrial machinery before the invention of steam engines were more durable than these picket lines of propellers along our Columbia Gorge. The composite material and rare earth chemicals they require are both perishable and costly to replace. More important, like fossil fuels, our planet has a finite supply of these materials. Wind power is such an inefficient means of generating electricity that a world that seriously relied on it the way we do fossil fuels would run out of the limited resources needed to build and maintain them long before our present trends would exhaust our vast bounty of hydrocarbons.
  • carusonepay99 on 08 Mar 13
     
    "The first hard core environmentalist I ever encountered in life taught my 8th grade energy class at Estacada Junior High, a course that President Carter's brand new Department of Education had mandated upon us a decade before as a symbolic gesture to show he cared about America's energy future. Despite an overall policy of separating church and state, in this class it was the gospel that we would deplete all fossil fuels by the year 2000. Back when "2000" was preceded by "THE YEAR" it seemed so far away didn't it? The only lasting lesson this course taught me was a healthy skepticism of government mandated indoctrination."
2More

Aquamarine Power - Why wave power? The potential to capture clean sustainable energy fr... - 2 views

www.aquamarinepower.com/...why-wave-power wave sustainable
shared by millingtoneli99 on 11 Mar 13 - No Cached
  • Ocean waves are generated by wind passing over the surface of the sea - a process which often begins many hundreds or thousands of miles from shore.
  • rodriguezjos99 on 11 Mar 13
     
    "Ocean waves represent our planet's last untapped natural renewable energy resource.  Over 70 per cent of the earth's surface is covered with water.  The energy contained within waves has the potential to produce up to 80,000TWh of electricity per year - sufficient to meet our global energy demand five times over. The potential to capture energy from the sea offers a vast and endless source of clean sustainable electricity."
1 - 20 of 118 Next › Last »
Showing 20▼ items per page