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INTRODUCTION TO ENERGY AND POWER INS J.BAU Departament de Tecnologia
Goals 2
What is energy? What is power? What is electricity? Current,
voltage, resistance, and power What are the relationships between these parameters?
Energy 3
So, everyone keeps talking about clean energy. Image 1 From: The Breakthrough Institute, CA URL: http://thebreakthrough.org/blog/2007/08/in_love_wit h_the_sun.shtml
What is energy, anyways?
Energy 4
Energy, simply put, is the ability to do work Energy
must be controlled to do work effectively Energy is most commonly measured in joules, calories, British thermal unit (Btu), and kWh Kinetic, potential, thermal, chemical, electrical, nuclear
Image 2 From: Crunch Gear URL: http://www.crunchgear.com/2009/04/0 3/ibm-could-buy-sun/
Image 3 From: American Feast's Sustainable Food Blog URL: http://blog.americanfeast.com/2009/08/missour i_wind_farm_draws_visit.html
Image 4 From: HubPages, Inc. URL: http://hubpages.com/hub/MonsterEnergy-Drink
Power vs. Energy 5
Power, like energy, is a measure of ability to do work, but it depends on time. Power
is how much energy we can deliver in a certain amount of time Units include watts and horsepower (HP).
Image 5 From: Parents URL: http://www.parents.com/kids/education/reading/playdatewith-a-purpose-downloads/
Image 6 From: Dream Road URL: http://www.dreamroad.us/bugatti-veyron-fastest-car-in-theworld/
Power vs. Energy 6
Which uses more power during its formation: a volcano or a mountain?
Image 7 From: Do Something.org URL: http://www.dosomething.org/tipsandtools/11-facts-about-volcanoes
Thrust SSC
Image 8 From: Top Wallpapers URL: http://www.jamwallpapers.com/wpcontent/uploads/2010/09/Rocky-Mountains-3.jpg
Shuttle Transporter
Power 7
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Power is simply Energy/Time
P = E/t How can we increase power?