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

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Presentation transcript:

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

1/17,000 of the Sun’s Output! According to John

To paraphrase Dennis: Economics be damned, we have to reduce our usage of fossil fuels.

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

CSP Technologies “…enough electric power for the entire country could be generated by covering about 9% of Nevada—a plot of land 100 miles on a side– with parabolic trough systems.”

DOE’s CSP Technologies Troughs Dish/Engines Power Towers

Troughs

Suitable For Large Systems Grid-connected Power MW size Proven Technology Available Today

Dish/Engines

Modular Remote Applications Demonstration Installations High Efficiency Conventional Construction Commercial Engines Under Development

Sterling Engine

Stirling Engine

Power Towers

Suitable For Large Systems Grid-connected Power MW size Potentially Lower Cost Potentially Efficient Thermal Storage Need To Prove Molten Salt Technology

Cost Of Energy* TroughDish/EngineTower *Cents/kWh in 1997 $

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

Solar Collection/Rejection

Solar House Features

Design for Solar

Design for Earth Cooling

Solar Tidbits Military –Tent and Uniform Fabrics –Pocket Battery Chargers Civilian –Backpacks –Radio Headsets –Wi-Fi in the Sky Time Magazine, October 31, 2005

Paul will discuss Alternate Energy Sources Applications Limitations Drivers Indicators

Alternate Energy Sources- Historical Nuclear Hydroelectric Geothermal Rooftop Water

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

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

Limitations High Cost Climate “Thin” - “Off” Daily Require Storage Duplication Big Footprint

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

Potential Drivers “Carbon Discharge” Tax Research Money (Public/Private) “Gas Guzzler” Tax Auto-maker Mileage Standards (SUV’s) Storms

Current Affairs - Indicators? California Governors‘ ”One MillionRooftop Solar Homes“ DWP’s Rebates ($!50-$300 Million) Negative Federal Thrust - “More/Cheaper Fossil Fuel” Doesn’t Help Solar Energy -Aggravates Climate Warming

Reading List General Information: – – – – – – –

Reading List For the Engineers: – Journal of Solar Engineering For the third world: –

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