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        Rasterized  First_law_open_system.jpg ~~ helix84 22:31, 30 October 2006 (UTC)
        Altered version of figure from
        (from DOE-HDBK 1012/1-92 (1992) "DOE Fundamentals Handbook: Thermodynamics, Heat Transfer, and Fluid Flow, Volume 1 of 3." US Department of Energy, Washington DC, p. 76,  http://www.eh.doe.gov/techstds/standard/hdbk1012/h1012v1.pdf . Removed and added nomenclature.)
        "Approved for public release; distribution is unlimited"
        
         
        
        
         
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