EnergyHarvesting

EnergyHarvesting - EmergingTechnologiesof Computation...

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Emerging Technologies of  Computation Montek Singh COMP790-084 Sep 20, 2011
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Basics of energy harvesting why must some systems harvest energy? where do you scavenge energy from? Introductory case studies Philips CEA-LETI Next class: More case studies Challenges and Benefits Today:  Energy Harvesting  Systems
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What is energy harvesting? no power supply, no batteries somehow scavenge energy from physical env What type of systems must harvest energy? hard to replace/recharge batteries hard to have batteries at all examples? Basics of energy harvesting
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Where do you harvest energy from? ambient light/solar:  using photovoltaic cells range:  0.1W/sq cm direct sun; 0.1mW/sq cm indoors silicon solar cells only 5-20% efficiency; 0.6V/cell temperature gradients:  using thermoelectric generators Seebeck effect turns temp gradients into electricity few hundred mV with a few Kelvin gradient Basics of energy harvesting
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This note was uploaded on 11/28/2011 for the course COMP 790 taught by Professor Staff during the Fall '08 term at UNC.

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EnergyHarvesting - EmergingTechnologiesof Computation...

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