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SOLAR ENERGY

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Potentially Efficient Thermal Storage. Need To Prove Molten Salt Technology. Cost Of Energy ... Photo-Voltaic (Panels) Applications - Solar Power. Remote power ... – PowerPoint PPT presentation

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Title: SOLAR ENERGY


1
SOLAR ENERGY
  • Max D. Lechtman
  • Paul W. Spinner
  • October 28,2005

2
1/17,000 of the Suns Output!According to John
3
To paraphrase Dennis
  • Economics be damned, we have to reduce our usage
    of fossil fuels.

4
Max will discuss
  • Concentrating Solar Power Technologies
  • Passive Solar Considerations
  • Solar Tidbits

5
CSP Technologies
  • enough electric power for the entire country
    could be generated by covering about 9 of
    Nevadaa plot of land 100 miles on a side
  • with parabolic trough systems.
  • www.energylan.sandia.gov/sunlab/overview.htm

6
DOEs CSP Technologies
  • Troughs
  • Dish/Engines
  • Power Towers

7
Troughs

8
Troughs
  • Suitable For Large Systems
  • Grid-connected Power
  • 30-200 MW size
  • Proven Technology
  • Available Today

9
Dish/Engines
10
Dish/Engines
  • Modular
  • Remote Applications
  • Demonstration Installations
  • High Efficiency
  • Conventional Construction
  • Commercial Engines Under Development

11
Sterling Engine
12
Stirling Engine
13
Power Towers
14
Power Towers
  • Suitable For Large Systems
  • Grid-connected Power
  • 30-200 MW size
  • Potentially Lower Cost
  • Potentially Efficient Thermal Storage
  • Need To Prove Molten Salt Technology

15
Cost Of Energy
  • Trough Dish/Engine Tower
  • 2000 11.8 17.9 13.6
  • 2010 7.6 6.1 5.2
  • 2020 7.2 5.5 4.2
  • 2030 6.8 5.2 4.2
  • Cents/kWh in 1997

16
Selected Passive Systems
  • House Design Features
  • Overhang
  • Trombe Wall
  • Roof Vents
  • Solar Hot Water
  • Rock Bin
  • Earth Cooling

17
Solar Collection/Rejection
18
Solar House Features
19
Design for Solar
20
Design for Earth Cooling
21
Solar Tidbits
  • Military
  • Tent and Uniform Fabrics
  • Pocket Battery Chargers
  • Civilian
  • Backpacks
  • Radio Headsets
  • Wi-Fi in the Sky
  • Time Magazine, October 31, 2005

22
Paul will discuss
  • Alternate Energy Sources
  • Applications
  • Limitations
  • Drivers
  • Indicators

23
Alternate Energy Sources- Historical
  • Nuclear
  • Hydroelectric
  • Geothermal
  • Rooftop Water


24
Alternate Energy Sources - Evolving
  • Biomass (Ethanol, digesters)
  • Wind
  • Solar Reflector Arrays (Driven, Stationary)
  • Photo-Voltaic (Panels)

25
Applications - Solar Power
  • Remote power
  • (Space, Wirefree)  
  • Architectural
  • SmallCommon Electronics                           
      
  • Emergency
  •  Military
  • Grid supplements

26
Limitations
  • High Cost    
  •        
  •  Climate   
  • Thin - Off Daily        
  •                              
  •                            
  • Require Storage
  • Duplication
  • Big Footprint

27
Who/What Drives Expansion Now?
  • Competitive Costs
  • Legislation (Subsidies)
  • Utilities (Rebates)
  • Emergencies
  • Environmentalists
  • Scientists (Union of Concerned)
  • Oil Companies (BP/Exxon)
  • Politicians (Some)

28
Potential Drivers
  • Carbon Discharge Tax
  • Research Money (Public/Private)
  • Gas Guzzler Tax
  • Auto-maker Mileage Standards (SUVs)
  • Storms

29
Current Affairs - Indicators?
  • California Governors One MillionRooftop Solar
    Homes
  • DWPs Rebates (!50-300 Million)
  • Negative Federal Thrust - More/Cheaper Fossil
    Fuel
  • Doesnt Help Solar Energy -Aggravates Climate
    Warming

30
(No Transcript)
31
Reading List
  • General Information
  • www.ases.org
  • www.eere.energy.gov/RE/solar.html
  • www.eere.energy.gov/solar/
  • www.homepower.com/
  • www.solarelectricpower.org/power/
  • www.solarenergy.net/
  • www.txses.org/epsea/

32
Reading List
  • For the Engineers
  • http//scitation.aip.org/dbt.jsp?KEYJSEED
  • Journal of Solar Engineering 2000-2005
  • For the third world
  • www.self.org/
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