Le06 - ME 200: Thermodynamics I Lecture 6: Total Energy,...

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ME 200: Thermodynamics I Lecture 6: Total Energy, internal energy, heat transfer Reading: Sections 2.3 & 2.4; SP6, 2.29, 2.41 Professor Hukam Mongia Office Hours: MWF 9:30 to 10:30 AM in ME 83 Other times email for appointment; Phone: 765-494-5640 Course Website: https://engineering.purdue.edu/ME200/ Course Secretaries: Diana Akers (ME 84) and Marilyn Morrison (ME 100) 9/3/2010 1 ME200 Therm I Lecture 06, Prof. Mongia
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Kinetic energy KE : energy associated with the motion of a system as a whole with respect to an external (inertial) 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) 8/26/2009 2
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Total energy change for a system is the sum of the changes in kinetic, potential, and internal energy: Total Energy 2 1 2 1 2 1 2 1 E E KE KE PE PE U U E KE PE U Internal energy : at the microscopic level, molecules can store internal energy in different modes, including
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Le06 - ME 200: Thermodynamics I Lecture 6: Total Energy,...

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