Chap.2 Energy potential energy (PE)kinetic energy (KE) 国 Change of energy pv Work/boundary work/shaft work/flow work... External force,non-quasi-equilibrium problem Sign (+/-definition of heat transfer and work 国 Internal energy... 上游充通大粤 May15,2018 4 HANGHAI HAO TONG LINIVERSITYMay 15, 2018 4 Chap. 2 Energy | potential energy (PE) |kinetic energy (KE) Change of energy Work/boundary work/ shaft work/ flow work… External force, non‐quasi‐equilibrium problem Sign (+/ ‐ ) definition of heat transfer and work Internal energy… pv