Forms of the 1st Law for Closed Systems 1.Finite process △E=Q-W 2.Differential form dE=δQ-δW ©3.Rate basis dE =9-W dt 国4.Steady-state o-w *steady-state>state does not change with time** 上游充通大学 March 7,2019 5 HANGHAI JIAO TONG UNIVERSITYMarch 7, 2019 5 Forms of the 1st Law for Closed Systems 1. Finite process ΔE = Q −W 2. Differential form dE =δQ −δW 3. Rate basis 4. Steady-state ** steady-state  state does not change with time**