RS 301 - Energy Lecture Notes - RS 301 Professor Wolf Cal...

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RS 301Professor WolfCal Poly PomonaFall 2009Lecture Notes on EnergyENERGY[wolf 2]industrial systemguarantee on time, atrt and workspay price for it external priceenergy amount is finiteenergy is stored in some form and we are always transforming it into another formsunlight:constant energy sourcebig driver for every energy is sunlight except 4 nuclearsunlight lifts water to damsunlight is heat, plant produce fuelso when look at ways people do energystorage:hydro electric – pot enrgywind wind in fast comes out slower and diff between kin energy air coming in extractpropeller in stream – kintidal energyburn fuelnucleartake air release pot energythese arfe intermittent source – means sporatic – fos fuel not intermittentproblem with renewable enrgy is that it is not dense – like oil and nat gasvideo “shldnt burn oil its too valuable”conservation of energy – which means u don’t get anything for free – amount of worl exact same as work out– cant get any more out than put in – natural inefficiencies built into the systempotentioal is ability to do work that is stored in position for relation between things – like spring ormagnet – rubber band elastic energy- do work to pull apart – put work into system and then get backout again – stroe in postyion or relation – compressed air let out turn fannuclear energy-string force-hit pos charge fly apart get energy –thermal energy is just heat – not particularly usefulso have electrical potential in form of batterykinetic energy is – stored in motion of bus =force for a distance over time
basically fos fuel is = if u take a pos charge and a neg charge, they want to be together, co if u takethem nd u separate them, in order to sep them u have to apply force for a distance u have to do workand when u let them get closer together u can get that energy out again -basically what fos fuel isso once apon a time co2 in water – can think of as charges close together – plant took sunlight andsuger and ox is photosynthese – sugar molecues = cellulos can think of sugar as pos nad neg chargesapart – cont….but cant see – called pot energy – banking analogypot energy not measurable so come up with account tool called pot enrgy which is a way of keepingtrak of where the energy is–way this works in real life is u have a dam here, that has water and then u have a lake here with water

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Term
Fall
Professor
ProfessorWolf
Tags
Energy, energy consumption, World energy resources and consumption, pot energy, energy is way

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