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Solar CSP

Alternative Energy - Concentrated Solar Power

AP Environmental

on 29 May 2011

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Transcript of Solar CSP

Pros and Cons Pros: Current Use * Potential of producing electricity 24 hours a day (with storage) * Large scale deployment * Use of typical central power plant technologies such as steam and turbine generators * Potentially lower costs, as theoretically, fuel costs would potentially be lower since a renewable fuel source is being used instead of costly fossil fuels * Hybrid plants are power plants that can use both a renewable fuel and a fossil fuel (such as natural gas) to generate electricity. On a sunny day, the solar thermal electric plant would use solar thermal energy to create electricity, while using fossil fuels at night or on cloudy days * Thermal storage: an option for parabolic trough and power tower solar thermal technologies. - Branch of Abengoa * No emissions, except when combined with natural gas in hybrid configurations; Cons: *High material requirements; *Cooling method is principally water. *Benefit depends on amount of direct sunlight. *Renewable, vurtially unlimited; sun is accessible in any part of the world *Extremely expensive; *Typically must be sited in remote areas, requiring transmission and distribution systems to be built; *Large land requirements; *Renewable, virtually unlimited; accessible any where in the world; Major Leaders Abengoa Solar Stirling Energy System Solar Millenium eSolar Bright Source Energy -Branch of Abengoa
-Based in Spain
-Owns Europe's first commerical power plant
-Multiple projects in Spain
-Plans on building world's largest solar plant in Arizona Solar power equipment company
Based in Arizona
Mission: "to build the most affordable, modular and scalable solar solution in the industry"
designed SunCatcher
launched world's first first operational SunCatcher power plant in early 2010
Has solar power projects in California, Texas, and Arizona Concentrated Solar Power
(CSP) Emily Ko
Cynthia Andrianjatovo
Mary Sader The End Bibliography http://www.renewableenergyfocus.com/view/3188/can-csp-and-wind-coexist/ http://www.idealsolarhome.com/pros-cons-of-solar-energy/ -Renewable energy company
-Based in Germany
-Builds solar thermal power plants
-Has future solar thermal projects in Spain, U.S., China, and North Africa -Founded in 2007 by Idealab
-Focuses mainly on developing CSP Technology
-Projects: Sierra SunTower in SoCal Mission:
"to make solar energy cost competitive with
fossil fuels by developing, building, owning and
operating the world’s most
cost-effective, environmentally-responsible
and reliable large-scale solar energy project" -Based in Oakland, California
-Has operations in the U.S, Israel, and Australia
-Currently developing solar power projects in
Southwestern states
-Ivanpah and Negev Focused Sunlight Uses mirrors to concentrate sun's energy Converts light into high-temperature heat Heat channeled through conventional generator CSP Plants consist of:
1) collecting solar energy and converting to heat
2) converting heat energy to electricity Trough Systems U-shaped (parabolic) reflectors (mirrors) track the sun fluid-filled pipes running along the focal point of the mirrors fluid heated to as much as 750°F hot fluid used to boil water makes steam to run conventional steam turbines and generators Advantages:
- heat recycled over and over
- steam is cooled, condensed, recycled again and again
- heat fluid can be stored and used later to keep making electricity when sun isn't shining Fresnel Lens Same as parabolic trough but linear (flat) mirrors Cheaper than parabolic mirrors more reflectors can be placed in same amount of space more available sunlight used Power Tower System Flat heliostats (mirrors) focus sun rays onto receiver Receiver is on top of tall tower Heats fluid up to
1,050°F Hot fluid used to make steam for electricity generation or store for later use fluid: oil or molten salt which retains heat efficiently, so energy can be stored for days before being converted into electricity Dish/engine systems mirrored dishes focus sunlight onto receiver receiver is mounted on focal point of dish dish assembly tracks sun across the sky during day receiver is integrated into high-efficiency "external" combustion engine engine has thin tubes containing hydrogen or helium gas that run along the outside of four piston cylinders sunlight falls on receiver, heats gas in the tubes to very high temperatures hot gas expands inside cylinders, which drives the pistons to turn a crankshaft, driving the electric generator receiver, engine, and generator are all mounted in a single assembly at the focus of mirrored dish A single CSP plant can generate 250 MW
(power for about 90,000 homes) http://solareis.anl.gov/guide/solar/csp/index.cfm http://www1.eere.energy.gov/multimedia/video_csp.html
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