Encyclopedia results for EROEI

1. EROEI
   
   EnergyPortal In physics , energy economics and energetics ecological energetics , EROEI Energy Returned on Energy Invested , ERoEI , EROI Energy Return On Investment or less frequently, eMergy , is the ratio ..
   
   
   
   
2. Hydrogen energy plant in Denmark
   
   Sea Solutions. The island is producing 50 more energy from renewable energy sources EROEI ..
   
   
   
   
3. Societal collapse
   
   Invested or EROEI . This is the measure of the amount of energy needed to secure a source of energy. Societal collapse occurs whenever the EROEI approaches 1 1. If it falls below 1 1, those attempting ..
   
   
   
   
4. Mahogany Research Project
   
   in . The Energy Return on Energy Invested EROEI is low compared to conventional crude oil extraction ..
   
   
   
   
5. Net energy gain
   
   2006 Unreferenced date September 2007 seealso EROEI Energy Return on Energy Invested Net Energy Gain ... Energy balance wikt energyware Energyware and energy carrier EROEI Solar Cell Solar cells and energy ..
   
   
   
   
6. Energy balance
   
   . See also net energy gain and EROEI . In geography , specifically climatology and hydrology ..
   
   
   
   
7. Energy conversion efficiency
   
   Figure of merit EROEI Exergy efficiency Figure of merit Fuel efficiency International Electrotechnical ..
   
   
   
   
8. EROI
   
   otheruses4 Eastman Rochester Organ Initiative the concept of Energy Return On Investment EROEI Image Installationcasparini.JPG right thumb 380px The Casparini organ in Christ Church, Rochester NY EROI ..
   
   
   
   
9. Thermal depolymerization
   
   . This means the EROEI Energy Returned on Energy Invested EROEI is 6.67 , which is comparable ... as fuel ethanol and biodiesel from agriculture agricultural sources have EROEI in the 4.2 range ..
   
   
   
   
10. Learning curve
    
    Invested or EROEI as also discussed on the Encyclopedia of the Earth as http www.eoearth.org ..
    
    
    
    
11. Non-conventional oil
    
    preferred because they provide a much higher EROEI ratio of extracted energy over energy used in extraction ..
    
    
    
    
12. Oil shale economics
    
    EROEI . This is because the extraction process is energy intensive, and so the increased cost ... the EROEI of the different oil shale deposits to vary between 0.7 13.3. ref name science2 Cite journal ..
    
    
    
    
13. Energy crisis
    
    resources. See also portal Economics EnergyPortal Commodity market EROEI The economic influence of EROEI ..
    
    
    
    
14. Oil shale industry
    
    Invested EROEI . A 1984 study estimated the EROEI of various known oil shale deposits as varying ... reported an EROEI ranging between three to four on its in situ development, Mahogany Research Project ..
    
    
    
    
15. Vegetable oil economy
    
    or EROEI . This is the ratio of energy out to energy input. These numbers can change as the technology changes. For example, early photovoltaics technology had EROEI numbers of less than 1 but current ..
    
    
    
    
16. Oil shale
    
    as Energy Returned on Energy Invested EROEI . A 1984 study estimated the EROEI of the various known .... Royal Dutch Shell has reported an EROEI of three to four on its in situ development, Mahogany Research ..
    
    
    
    
17. Photovoltaics
    
    Image Mafate Marla solar panel dsc00633.jpg 250px right Image Gleisdorf.Solarbaum.jpg thumb 200px Photovoltaic tree in Styria state Styria , Austria Renewable energy sources Photovoltaics PV is the fi ...
    
    
    
    
18. Oil depletion
    
    they no longer EROEI produce profitable amounts . ref name mkinghubbert1956 Such wells are referred ..
    
    
    
    
19. The Coal Question
    
    title ref energy return on energy input EROEI , taxation of the energy resource, renewable energy ..
    
    
    
    
20. 1980s oil glut
    
    Koepp ref EROEI High cost oil production facilities became less or even not profitable. US imports ..
    
    
    
    
21. Oil shale extraction
    
    Image Shell insitu.gif thumb 300px right Shell s experimental in situ oil shale facility, Piceance Basin, Colorado, USA. Oil shale extraction is an industrial process in which kerogen &mdash a mixture ...
    
    
    
    
22. Predicting the timing of peak oil
    
    sources in oil reserves reserves while discounting EROEI , believes that global production ..
    
    
    
    
23. Peak uranium
    
    see Uranium depletion Hubbert peak theory Peak uranium is the point in time that the maximum global uranium production rate is reached. After that peak, the rate of production enters a terminal declin ...
    
    
    
    
24. Food vs fuel
    
    percent reduction. While the EROEI and economics of corn based ethanol are a bit weak, it paves the way for cellulosic ethanol which should have much better EROEI and economics. While basic nourishment ..
    
    
    
    
25. Civilization
    
    that the fall in the EROEI energy return on investments the energy expended to energy yield ratio ..
    
    
    
    

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