CE 2200 Lecture : Lecture1618
Document Summary
The energy change of a system during a process is equal to the net work and heat transfer between the system and its surroundings. Introduction: first law of thermodynamics (conservation of energy principle) Energy can be neither created nor destroyed during a process; it can only change forms. The energy of a closed system can be changed by two mechanisms: Wq or dw dq de sys dt dt dt de sys dt where: e = energy of a system (extensive property); q = heat added to the system; w = work done by the system; For simple compressible systems, total energy consists of internal, kinetic, and potential energies. Intensive property (energy per unit mass): where eu = internal energy of the system; ek = kinetic energy of the p system; ep = potential energy of the system. Reynolds transport theorem db sys dt d dt. Derive energy equation using _______and _______ de sys dt d dt.
