In this fifth edition of a text/DVD for students with background in calculus and physics, engel (mechanical engineering, University of Nevada) and Boles (mechanical and aerospace engineering, North Carolina State University) provide early introduction of the first law of thermodynamics, separate coverage of closed system energy analysis, combined coverage of control volume mass and energy analysis, and expanded material on compressible flow. There are 300 new homework problems. The new DVD contains a limited version of EES, videos of physical experiments and actual data in Excel, and a tutorial.