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

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EE1001: Emerging Technologies in Electrical Engineering – Power & Energy Lecturer - S K Panda Area Director, Power & Energy Cluster D f El l & E Department of Electrical & Computer Engineering AY – 2011 -2012 AY 2011 2012 Lecture Venue – LT6 (Tuesday and Friday) Tel: 6516 6484, E-mail: [email protected]
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EE1101: Emerging Technologies in Electrical Engineering - 2011-12 Chapter1: Power & Energy S K Panda I t d ti t & Introduction to power & energy • What is Energy ? Energy is defined as “ something that has the ability to do work ”. • Why do we need it ? 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. Homo erectus about 1.8 millions years ago knew how to use and control fire Chapter-1-Pg.2 .
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EE1101: Emerging Technologies in Electrical Engineering - 2011-12 Chapter1: Power & Energy S K Panda Hi i l i E 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 • Latter they developed technology for making fire • Latter, they developed . – Chemical energy in wood > heat > comfort of habitat d lit f th i di t and quality of their diet . • Usage and control of fire gave Home erectus a distinct advantage over other species and contributed in their survival and further progress. • Invention of “ Bow and Arrow ” some 10 – 15 thousand years ago is an important technological development – classified as “ weapon ” or “ tool ” but “ energy converter is the most accurate technical description. • It allowed humans to transform a small portion of muscle energy into highly controllable kinetic energy – kinetic energy deadly missile . Chapter-1-Pg.4
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