Lecture Slides for PES_1 - EE1101 Emerging Technologies in...

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EE1101: Emerging Technologies in Electrical Engineering - 2011-12 Chapter1: Power & Energy – S K Panda EE1001: Emerging Technologies in Electrical Engineering – ower & Energy ecturer - K Panda Power & Energy Lecturer S K anda Area Director, Power & Energy Cluster Department of Electrical & Computer Engineering Y – 011 - 012 AY 2011 2012 Lecture Venue – LT6 (Tuesday and Friday) Tel: 6516 6484, E-mail: [email protected] Chapter-1-Pg.1
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EE1101: Emerging Technologies in Electrical Engineering - 2011-12 Chapter1: Power & Energy – S K Panda Introduction to power & energy •W h a t i s E n e r gy ? Energy is defined as “ something that has the ability to do work ”. • Why do we need it ? n rder emain live e eed !! In order to remain alive we need it!! To get trivial and routine work to be carried out by machines - to improve standard of living of human beings • Humans learned to master various forms of energy that nature provided us. that nature pro ded us. • Homo erectus about 1.8 millions years ago knew how se nd ontrol ire Chapter-1-Pg.2 to use and control fire .
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EE1101: Emerging Technologies in Electrical Engineering - 2011-12 Chapter1: Power & Energy – S K Panda Historical events in Energy Cited from http://www.eia.doe.gov/kids/history/timelines/index.html
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EE1101: Emerging Technologies in Electrical Engineering - 2011-12 Chapter1: Power & Energy – S K Panda atter ey eveloped chnology or aking ire • Latter, they developed technology for making fire . – Chemical energy in wood > heat > comfort of habitat and qualityof their diet . • Usage and control of fire gave Home erectus a distinct advantage over other species and contributed in their survival and further progress. •I n v e n t i o no f“ Bow and Arrow ” some 10 – 15 thousand years ag oi sanimportant technological development – classified as “ weapon ”or“ tool ”but“ energy converter is the most accurate technical description. • It allowed humans to transform as m a l lp o r t i o f uscle nergy to ighly ontrollable inetic nergy – muscle energy into highly controllable kinetic energy deadly missile . Chapter-1-Pg.4
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EE1101: Emerging Technologies in Electrical Engineering - 2011-12 Chapter1: Power & Energy – S K Panda • Invention of bow and arrow allowed “ leisure time ” for humans for other activities such as art, religion etc. . •H u m a n s a b a n d o n nomadic life of hunter and settle into ancient city-states. • Agriculture and animal husbandry were the prime prerequisites for this revolutionary change of lifestyle. •P l a n t s and animals have always provided the life- staining nks etween e nergy rovided y he n sustaining links between the energy provided by the sun and that required by humans. heir omestication rovided ontrol nd lso he • Their domestication provided control and also the possibility of essential energy transformation rocesses processes .
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This note was uploaded on 11/30/2011 for the course EEE 1001 taught by Professor Phoon during the Spring '11 term at National University of Singapore.

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Lecture Slides for PES_1 - EE1101 Emerging Technologies in...

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