Transcription of Energy Transfer and Conversion Methods - MIT …
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Energy Transfer and Conversion Methods MIT 9/16/2010. Sustainable Energy Fall 2010 Conversion 1. Mission of this Session Introduce the importance and challenges of Energy Conversion Diffuse Energy sources Thermodynamic limits Rate processes 2. Sustainable Energy Fall 2010 Conversion Energy Conversion Energy Conversion is the process of changing Energy from one form to another Energy Energy Useful Source Conversion Energy 3. Sustainable Energy Fall 2010 Conversion Historic Energy Conversion Sequences Biomass heat (esp. cooking). Solar heat, dry clothes, dry food Solar is still main light source, no need for Conversion Solar is source of biomass, wind, hydro, etc.
Flowin pipe = − 2 D2 P µf Re dx I dV • Ohm’s law of current flow A = −σ dx Consequence: the heat arrives at lower T, the mass arrives at lower P, the electrons arrive at lower V, etc.: “Losses” Sustainable Energy – Fall 2010 – Conversion 21
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