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Lecture 19 PES Su 2011 annotated

Lecture 19 PES Su 2011 annotated - ME 200 Thermodynamics I...

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ME 200: Thermodynamics I Lecture 19: Yet more 1 st Law analysis for open systems Prof. Sojka Summer 2011
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6 July 2011 ME 200 2 In this Lecture … We will perform even more 1 st Law analyses of open systems
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ME 200 3 Heat Transferring Devices Heat transferring devices: recuperators and mixing chambers . 6 July 2011
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ME 200 4 Heat Exchangers A non-contact heat exchanger ( recuperator ) is a passive device used to transfer energy between two fluid streams without mixing . 6 July 2011
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ME 200 5 Heat exchanger (shell and tube) Used in power plants, waste heat recovery in chemical/food processing, … 6 July 2011
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ME 200 6 Heat Exchangers A mixer is a passive device designed to transfer energy between two fluid streams when they do come into contact . 6 July 2011
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ME 200 7 Heat Exchangers Depends on the choice of the system, and the problem statement. Any rotating shafts, electricity, or moving boundaries? No! W = 0. The Δ ke is often small compared to the Δ h, so Δ ke 0.
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