Lect6Div2&5HeatTransferSP2012

Lect6Div2&5HeatTransferSP2012 - ME 200:...

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ME 200: Thermodynamics I Lecture 6: Total Energy and Heat Transfer
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Last Lecture Expansion compression work Shaft work Spring work
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This Lecture System Energy Interactions » Total Energy » Internal Energy » Heat Transfer
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Kinetic energy KE: energy associated with the motion of a system as a whole with respect to an external coordinate system Potential energy PE: energy associated with the position of a system as a whole in the earth’s gravitational field Internal energy U: all other forms of energy for the system Units: kJ (SI) or Btu (English) Total Energy
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Total energy change for a system is the sum of the changes in kinetic, potential, and internal energy: Total Energy 21 2 1 2 1 E E KE KE PE PE U U EK EP EU    Internal energy: at the microscopic level, molecules can store internal energy in different modes, including translation (kinetic energy of molecules), rotation
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This note was uploaded on 01/26/2012 for the course ME 200 taught by Professor Gal during the Spring '08 term at Purdue University-West Lafayette.

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Lect6Div2&5HeatTransferSP2012 - ME 200:...

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