# Energy FUN damentals. The Good News “The increase in the internal energy of a system is equal to the amount of energy added by heating the system, minus.

## Presentation on theme: "Energy FUN damentals. The Good News “The increase in the internal energy of a system is equal to the amount of energy added by heating the system, minus."— Presentation transcript:

Energy FUN damentals

The Good News “The increase in the internal energy of a system is equal to the amount of energy added by heating the system, minus the amount lost as a result of the work done by the system on its surroundings.” HUH? 1 st law of thermodynamics http://mooreslore.corante.com/archives/images/homer%20simpson.gif

The Good News The amount of energy in the universe is constant. Energy is neither created nor destroyed

Forms of Energy mechanical (kinetic) http://z.about.com/d/miami/1/0/z/5/bike.jpg

Forms of Energy heat (thermal) http://www.furniturehomedesign.com/wp-content/uploads/2009/01/space-heater.jpg

Forms of Energy electrical http://www.juniorcitizen.org.uk/kids/electricalsafety/electricity.gif

Forms of Energy Chemical 1 http://i176.photobucket.com/albums/w172/bidule-78/muscles-1.jpg

Forms of Energy Chemical 2 http://www.photoshoponline.co.uk/ekmps/shops/thephotoshop/images/duracell_batteries_set(1).jpg

Forms of Energy Nuclear Fission http://www.chemistryland.com/ChemEdArticle/FissionNoText.jpg

Forms of Energy Nuclear Fusion http://www.lancs.ac.uk/ug/hussainw/fusion.jpg

Energy Unit Conversions 1 Btu = 1055 JJ (Joules) 1 Btu = 252 calBtu (British thermal units) 1 Cal = 1,000 calcal (calories) 1 Cal = 3.97 BtuCal (food calories) 1 kWh = 3413 BtukWh (kiloWatthours) 1 therm = 100,000 Btu

Energy Equivalents 1 barrel (bbl) crude oil = 5,800,000 Btu 1 gal gasoline = 124,000 Btu 1 ton (2,000 lbs) bituminous coal = 25,000,000 Btu 1,000 cubic feet natural gas = 1,035,000 Btu 1 gram Uranium (235U): Nuclear Energy = 78,400,000 Btu 1 gram Deuterium (2H): Sun Energy = 225,000,000 Btu 1 mass-gram any solid: E= mc 2 energy = 85,000,000,000 Btu

The Bad News Energy always flows downhill (from a hot body to a cold one)

The Bad News The disorder of a system can never decrease

When energy is transformed some energy is “lost” http://www.musclecarclub.com/petrol/free_gasoline_prices.jpghttp://www.funkymotors.ie/images_p/honda_civic_komodo_01_496.jpg

When energy is transformed some energy is “lost” as heat http://www.wiley.com/legacy/college/boyer/0470003790/reviews/thermo/heat_tax.gif

energy loss in a car http://www.consumerenergycenter.org/transportation/consumer_tips/images/energy_losses_in_car.gif

Generation of Electricity I

Generation of Electricity II http://www.lenntech.com/images/Boiler%20FE%20images/boiler-schema.jpg

Generation of Electricity III http://www.powergeneration.siemens.com/NR/rdonlyres/2C99211B-D6C1-4FC4-BB74-FDF6C4216981/0/Steam_Turbine_Altbach_001339.jpg

Generation of Electricity IV http://www.jmg-galleries.com/blog_images/sea_of_power_lines_sf_520c.jpg

Coal = Chemical  Heat + Light Steam = Heat  Mechanical + Turbine = Mechanical  Electricity Power Lines = Electricity  Electricity waste

Why doesn’t the earth run out of useable energy? http://www.foxnews.com/images/281424/0_61_snowball_earth.jpg

The Sun is pumping energy into the earth’s atmosphere 24/7 http://www.bnsc.gov.uk/assets/channels/education/ae/sun_main.jpg http://global-warming.accuweather.com/blogpics/globe-modis-browse.jpg

http://www.solar-benefits.com/index.5.gif

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