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Passive Solar Energy

H. Earth Science 7th hour

Aisha T

on 11 October 2012

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Transcript of Passive Solar Energy

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli Gracie Figueroa and Aisha Thaj Passive Solar Energy 4 types:
direct gain
indirect gain
isolated gain

Windows absorb heat during day and let heat into building at night.

Used for heating buildings and cooling buildings Description Passive solar heating happens when sunlight shines on an object and it absorbs the heat (passive cooling is opposite) Uses does not have high initial cost or long-term payback period. modest levels of solar (passive) heating can reduce building auxiliary heating requirements from 5% to 25% at little first cost. costs little more than conventional building design and saves money over long term Cost readily available:
the sun is available to all, if one has the right building layout
climates with clear skies during winter heating season
solar surfaces should face true south
(The direction, at any point on the earth that is geographically in the northern hemisphere, facing toward the South Pole of the earth.) with no obstruction creating shadows. Availability Environmental
Impact Maximum exposure to sunlight should be intermittent to not overload,
which could affect some electronic appliances.
Smaller buildings with envelope design controlling energy demand.
A place not already used by busy people and heat producing electronics from the sun. Location slows fossil fuel depletion BENEFITS houses with solar glass surfaces and overhangs with unobstructed access to sunlight EFFECTS/DAMAGE Passive Solar Energy
Passive Solar Heating/Cooling NAME: The Sun ORIGIN The Greeks in the 5th Century B.C. used Passive Solar building designs DISCOVERED
BY: Facts Sites doesn't generate greenhouse gases uses natural convection and radiation rather than machinery no emission of greenhouse gases It's a way of thinking about building home has to be south facing (Northern Hemisphere) Sun applies 15% of heating energy in ordinary homes http://www.alternative-energy-news.info/passive-solar-energy/

http://www.californiasolarcenter.org/history_passive.html(who discovered)

http://www.wbdg.org/resources/psheating.php (cost, environmental impact, location)

http://solarenergyfactsblog.com/passive-solar-energy/ (interesting facts)
Hirshcmann, Kris. Solar Energy. Farmington Hills, MI: Thomson Gale, 2006. 13-16. Print

Rooney, Anne. Solar Power. Pleasantville, NY: Gareth Stevens, 2008. 6. Print.

Armentrout, David, and Patricia Armentrout. Solar Energy. Vero Beach, FL: Rourke, 2009. 18, 44. Print. The Romans in the 1st Century A.D. used glass windows to trap the heat inside their homes (Passive Solar also). renewable building materials include salt soaked wood, glass, and stone. windows are covered at night to prevent energy escaping the Romans had a law in the 6th Century A.D. prohibiting tall buildings that blocked the sunlight.
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