Skip to main content

Home/ Groups/ qmstech2
Rss Feed
Sort By: Most Recent | Popular Filter: All | Bookmarks | Topics Simple Middle
giumarraant99

NREL: Hydrogen and Fuel Cells Research - Renewable Electrolysis - 0 views

www.nrel.gov/...renew_electrolysis.html

use renewable sustainable hydrogen

shared by giumarraant99 on 24 Oct 12 - No Cached
  • Renewable electrolysis is a process that uses renewable electricity to produce hydrogen by passing an electrical current through water. Renewable energy sources such as photovoltaics, wind, biomass, hydropower, and geothermal can provide clean, sustainable electricity for our nation
  • Wind turbines can be used to produce hydrogen through a process called renewable electrolysis.
logansar99

BBC NEWS | Technology | Wave farms show energy potential - 1 views

news.bbc.co.uk/...6410839.stm

wave future change current

shared by logansar99 on 24 Oct 12 - Cached
  • Ocean waves carry tremendous power, and could, in theory at least, provide much of the world's electricity.
  • "What gives us tremendous hope with this technology is that our opening costs are substantially below where wind power started 20, 25 years ago."
  • Wind power has reduced its cost by 80% since, as the technology has been deployed and optimised, he says.
  • ...3 more annotations...
  • Ms Pontes says wave energy could someday supply 20% of Portugal's power.
  • "That's equal to about six-and-a-half percent of our total capacity in the United States, equal to all the dams that we have in the US right now."
  • The European Union has proposed a commitment to generate 20% of its energy from renewable sources by the year 2020.
logansar99

EERE News: DOE Reports Show Major Potential for Wave and Tidal Energy Production Near U... - 0 views

apps1.eere.energy.gov/...pa_id=664

wave potential

shared by logansar99 on 24 Oct 12 - No Cached
  • The United States uses about 4,000 terawatt hours (TWh) of electricity per year. DOE estimates that the maximum theoretical electric generation that could be produced from waves and tidal currents is approximately 1,420 TWh per year, approximately one-third of the nation's total annual electricity usage.
  • calculate the maximum kinetic energy available from waves and tides off U.S. coasts that could be used for future energy production, and which represent largely untapped opportunities for renewable energy development in the United States.
  • The West Coast, including Alaska and Hawaii, has especially high potential for wave energy development, while significant opportunities for wave energy also exist along the East Coast. Additionally, parts of both the West and East Coasts have strong tides that could be tapped to produce energy.
dpurdy

Photovoltaic power station - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Photovoltaic_power_station

infrastructure transported grid solar

shared by dpurdy on 26 Oct 12 - No Cached
  • A photovoltaic power station, also known as a solar park, is a large-scale photovoltaic system designed for the supply of merchant power into the electricity grid. They are differentiated from most building-mounted and other decentralised solar power applications because they supply power at the utility level, rather than to a local user or users. They are sometimes also referred to as solar farms or solar ranches, especially when sited in agricultural areas.
  • Most stations are sited within a few kilometres of a suitable grid connection point. This network needs to be capable of absorbing the output of the solar park when operating at its maximum capacity. The project developer will normally have to absorb the cost of providing powerlines to this point and making the connection; in addition often to any costs associated with upgrading the grid, so it can accommodate the output from the plant.
  • Income is therefore affected not only by the reliability of equipment within the plant, but also by the availability of the grid network to which it is exporting
smithkai143

Kinetic energy - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Kinetic_energy

tidal form

shared by smithkai143 on 26 Oct 12 - Cached
  • The kinetic energy of an object is the energy which it possesses due to its motion.[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body in decelerating from its current speed to a state of rest.
phinneycha99

The Energy of Light - Lesson - www.TeachEngineering.org - 0 views

www.teachengineering.org/view_lesson.php

solar form

shared by phinneycha99 on 26 Oct 12 - No Cached
  • Visible light is only one type of EM wave. We use different kinds of electromagnetic waves for many different purposes.
  • phinneycha99 on 26 Oct 12
     
    light is electromagnetic radiation.
phinneycha99

The Basics of Light - 0 views

violet.pha.jhu.edu/...basics.html

form solar

shared by phinneycha99 on 26 Oct 12 - No Cached
  • Simply stated, light is nature's way of transferring energy through space.
dpurdy

HowStuffWorks "How Fuel Cells Work" - 1 views

auto.howstuffworks.com/...fuel-cell1.htm

hydrogen future potential uses history

shared by dpurdy on 26 Oct 12 - Cached
  • The fuel cell will compete with many other energy­ conversion devices, including the gas turbine in your city's power plant, the gasoline engine in your car and the battery in your laptop. Combustion engines like the turbine and the gasoline engine burn fuels and use the pressure created by the expansion of the gases to do mechanical work. Batteries convert chemical energy back into electrical energy when needed. Fuel cells should do both tasks more efficiently.
  • Sir William Grove invented the first fuel cell in 1839. Grove knew that water could be split into hydrogen and oxygen by sending an electric current through it (a process called electrolysis). He hypothesized that by reversing the procedure you could produce electricity and water. He created a primitive fuel cell and called it a gas voltaic battery. After experimenting with his new invention, Grove proved his hypothesis. Fifty years later, scientists Ludwig Mond and Charles Langer coined the term fuel cell while attempting to build a practical model to produce electricity.
  • carrowluk99 on 26 Oct 12
     
    " Combustion engines like the turbine and the gasoline engine burn fuels and use the pressure created by the expansion of the gases to do mechanical work. Batteries convert chemical energy back into electrical energy when needed. Fuel cells should do both tasks more efficiently."
gerardijos98

US.energy.consumption.pie.chart.jpg (762×497) - 2 views

www.geography.hunter.cuny.edu/...ergy.consumption.pie.chart.jpg

wave

shared by gerardijos98 on 26 Oct 12 - No Cached
  • gerardijos98 on 26 Oct 12
     
    image of US energy source use ;wave energy is others bc it is experimental 
dpurdy

http://ec.europa.eu/research/energy/pdf/hlg_vision_report_en.pdf - 1 views

ec.europa.eu/...hlg_vision_report_en.pdf

hydrogen uses future co2

shared by dpurdy on 26 Oct 12 - No Cached
    • slentzkel99
      slentzkel99 on 26 Oct 12
       
      Report on hydrogen economy potential 
  • dpurdy on 26 Oct 12
     
    Challenges Producing hydrogen in the large quantities necessary for the transport and stationary power markets could become a barrier to progress beyond the initial demonstration phase.  Uses: Fuel cells will be used in a wide range of products, ranging from very small fuel cells in portable devices such as mobile phones and laptops, through mobile applications like cars, delivery vehicles, buses and ships, to heat and power generators in stationary applications in the domestic and industrial sector. Future energy systems will also include improved conventional energy converters running on hydrogen (e.g. internal combustion engines, Stirling engines, and turbines) as well as other energy carriers (e.g. direct heat and electricity from renewable energy, and bio-fuels for transport). 
slentzkel99

Describe Two Different Energy Alternatives To... | Chegg.com - 1 views

www.chegg.com/...natives-fossil-fuels--q3091004

alternatives fossil

shared by slentzkel99 on 26 Oct 12 - No Cached
  • Difference Between Alternative Energies (Ae) And Fossil Fuels essential difference between alternative energies (AE) and fossil fuels? Alternative energies will not have a lot of pollution, but fossil fuels will cause some..
shortsleevesky99

Fuel Cells - 1 views

www.dg.history.vt.edu/...fuelcells.html

fuel cell history cost

shared by shortsleevesky99 on 26 Oct 12 - No Cached
  • Current estimates for an entire system, including fuel and air supply, insulation, fuel cells stack, reformer and desulfurizer, piping, labor, depreciation, system control and power electronics is as high as $4000 per kW [20].
  • shortsleevesky99 on 11 Mar 13
     
    "The technology for fuel cells has been around since 1839. NASA further developed the technology for the Gemini space project[18],[19]. Fuel cell technology remains in a developmental phase and only in the past ten years has development significantly increased."
haguedav98

Geothermal Basics - Power Plant Costs - 1 views

geo-energy.org/geo_basics_plant_cost.aspx

geothermal power plant cost solar wind

shared by haguedav98 on 26 Oct 12 - No Cached
  • According to studies, an economically competitive geothermal power plant can cost as low as $3400 per kilowatt installed.
  • While the cost of a new geothermal power plant is higher than that of a comparable natural gas facility,
  • in the long run the two are similar over time. This is because natural gas construction costs account for only one third of the total price of the facility, while the cost of the fuel at a natural gas facility represents two thirds of the cost
dpurdy

Photovoltaic publications : Global Market Outlook, Solar Generation - 1 views

www.epia.org/...epiapublications.html

solar current

shared by dpurdy on 31 Oct 12 - No Cached
  • On a global scale, approximately 15,000 MW of new PV installations have been added during 2010, amounting the entire PV capacity to almost 40,000 MW.
  • dpurdy on 31 Oct 12
     
    During 2010, the Photovoltaic (PV) market has shown unprecedented growth and wide-spread deployment of this environmentally friendly source of power generation. On a global scale, approximately 15,000 MW of new PV installations have been added during 2010, amounting the entire PV capacity to almost 40,000 MW.
tavarreskat99

Tidal power (tidal energy) facts - Interesting energy facts - 1 views

interestingenergyfacts.blogspot.com/...-power-tidal-energy-facts.html

tidal energy

shared by tavarreskat99 on 22 Oct 12 - Cached
  • Tide mills, in use on the Spanish, French and British coasts, date back to 787 A.D.
  • Tidal energy is a type of energy that produces electricity and other forms of power through the use of water.
  • The tide moves a huge amount of water twice each day and although the tidal energy supply is reliable and plentiful, converting it into useful electrical power is not easy.
  • ...6 more annotations...
  • The first involves converting the power of the horizontal movement of the water into electricity. The second involves producing energy from the rise and drop of water levels
  • Although the technology required to harness tidal energy is well established, tidal power is expensive, and there is only one major tidal generating station in operation. This is a 240 megawatt station at the mouth of the La Rance river estuary in France.
  • There are three prototypes of tidal energy devices: horizontal axis turbine, vertical axis turbine, and oscillating devices
  • Tidal energy is not on the list of sustainable energy technologies the UN agencies even though for islanders it is our best hope for large amounts of affordable clean power.
  • Turbines, similar to wind turbines, can be anchored to the sea bed to generate electricity from tidal currents
  • Tidal energy has an efficiency of 80% in converting the potential energy of the water into electricity
dpurdy

Winner Announced: Design an Infographic About Energy - Design - GOOD - 0 views

www.good.is/...gn-an-infographic-about-energy

sustainable Fossil fuel

shared by dpurdy on 14 Feb 12 - No Cached
  • anonymous on 05 Oct 13
     
    today hindi news,today news talmi,hindi news www.killdo.de.gg
jurektho99

My Library - 0 views

www.diigo.com/jurektho99

shared by jurektho99 on 22 Oct 12 - No Cached
paquinbro99

My Library - 0 views

www.diigo.com/paquinbro99

shared by paquinbro99 on 22 Oct 12 - No Cached
rossnat98

My Library - 0 views

www.diigo.com/rossnat98

shared by rossnat98 on 22 Oct 12 - No Cached
morrisseygra99

RimLife Green Teknologi LLC - Heavy Solar and Green Technologies - 0 views

www.rimlifegreentech.com/iesel_production_logistics.htm

biofuel technologies

shared by morrisseygra99 on 22 Oct 12 - No Cached
  • Biodiesel is considered a non-flammable and non-combustible product.
  • Optimally, dedicated biodiesel tanker trucks and associated transfer components should be used to transport biodiesel. If non-dedicated equipment is used, it must be washed, rinsed, drained and dried prior to biodiesel loading in order to avoid any cross-contamination.
« First ‹ Previous 561 - 580 Next › Last »
Showing 20▼ items per page