Energy Efficiency and Renewable Energy Resources.
-
Upload
jocelin-hubbard -
Category
Documents
-
view
218 -
download
2
Transcript of Energy Efficiency and Renewable Energy Resources.
![Page 1: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/1.jpg)
Energy Efficiency and Renewable Energy Resources
Energy Efficiency and Renewable Energy Resources
![Page 2: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/2.jpg)
Solutions:We have the answers!Solutions:We have the answers!
Energy Efficiency! 43% of energy in the US is wasted
unnecessarily• Incandescent bulb=5% efficient
Fluorescent bulb=20% efficient• Auto fleet standards = CAFE Standards
(Corporate Average Fuel Economy) – 12.9 mpg in 1974– 27.9 mpg today– 40 mpg CAFE standard would cut gas use by
50%
![Page 3: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/3.jpg)
Efficiencies Efficiencies
![Page 4: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/4.jpg)
Ways to Improve Energy EfficiencyWays to Improve Energy Efficiency
InsulationInsulationEliminate air leaksEliminate air leaksAir to air heat exchangersAir to air heat exchangersEfficient appliancesEfficient appliancesEfficient electric motorsEfficient electric motorsHigh-efficiency lightingHigh-efficiency lightingIncreasing fuel economyIncreasing fuel economy
![Page 5: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/5.jpg)
Solutions:We have the answers!Solutions:We have the answers!
Renewable Energy Resources! • Biomass• Hydroelectric power• Geothermal• Solar—passive and active• Wind generation• Hydrogen power
![Page 6: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/6.jpg)
Using Solar Energy to Provide Heat and ElectricityUsing Solar Energy to Provide Heat and Electricity
Passive solar heatingPassive solar heatingActive solar heatingActive solar heating
![Page 7: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/7.jpg)
Using Solar Energy to Provide High-Temperature Heat and Electricity
Using Solar Energy to Provide High-Temperature Heat and Electricity
Solar thermal systems Solar thermal systems
Photovoltaic (PV) cells Photovoltaic (PV) cells
Solar Cell Trade-OffsSolar Cell Trade-Offs
![Page 8: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/8.jpg)
Producing Electricity from Moving WaterProducing Electricity from Moving Water
Large-scale hydropower Large-scale hydropower
Small-scale hydropower Small-scale hydropower
50% of West Coast electricity50% of West Coast electricity7% of US electricity7% of US electricity20% of World’s electricity20% of World’s electricity
Major environmental impactsMajor environmental impactsHigh construction costsHigh construction costs
![Page 9: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/9.jpg)
Impacts of hydropower on salmon and other riverine spp. Impacts of hydropower on salmon and other riverine spp.
Pollution Pollution
Disruption of water flow
Disruption of water flow
Loss of biodiversity
Loss of biodiversity
Invasive species Invasive species
![Page 10: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/10.jpg)
Impacts of hydropower on Species and People_______________Impacts of hydropower on Species and People_______________
Dams can provide many human benefits but:
• Disrupts ecological services rivers provide; e.g. 119 dams on Columbia River have caused a 94% drop in wild salmon; removing hydroelectric dams will restore native spawning grounds
• Displaces millions of people worldwide as reservoirs flood traditional homelands
• No room for expansion in the US
![Page 11: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/11.jpg)
Producing Electricity from WindProducing Electricity from Wind
![Page 12: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/12.jpg)
Producing Energy from BiomassProducing Energy from BiomassBiofuelsBiofuels
Biomass plantationsBiomass plantations
Crop residuesCrop residues
Animal manureAnimal manure
Biogas Biogas
Ethanol Ethanol
MethanolMethanol
![Page 13: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/13.jpg)
The Solar-Hydrogen RevolutionThe Solar-Hydrogen Revolution
Extracting hydrogen efficientlyExtracting hydrogen efficientlyStoring hydrogenStoring hydrogenFuel cellsFuel cells
![Page 14: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/14.jpg)
Geothermal EnergyGeothermal Energy
Geothermal reservoirsGeothermal reservoirs
Dry steamDry steam
Wet steamWet steam
Hot waterHot water
Molten rockMolten rock
Hot dry-rock zonesHot dry-rock zones
![Page 15: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/15.jpg)
Geothermal ReservoirsGeothermal Reservoirs
![Page 16: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/16.jpg)
Entering the Age of Decentralized MicropowerEntering the Age of Decentralized Micropower
Centralized power systemsCentralized power systems
Decentralized power systemsDecentralized power systems
Micropower systemsMicropower systems
Fig. 16-39p. 411
![Page 17: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/17.jpg)
Creating a Sustainable Energy FutureCreating a Sustainable Energy Future
• Increase fuel efficiency standards for vehicle, appliances, buildings
• Tax and other financial incentives for energy efficiency
• Subsidize renewable energy use, research and development
• Internalize externalities for fossil fuels
• By 2050: – Increase renewable energy to 50%– cut coal use by 50%– phase out nuclear altogether
![Page 18: Energy Efficiency and Renewable Energy Resources.](https://reader035.fdocuments.net/reader035/viewer/2022062423/56649e705503460f94b6e98c/html5/thumbnails/18.jpg)
Solutions: A Sustainable Energy StrategySolutions: A Sustainable Energy Strategy