Chap.3 Polytropic process for closed system pV"constant P,v,T relations.For all gas?For ideal gas? Four particular cases:isobaric,isothermal, isentropic,isochoric ©△u,△h,w,q for polytropic process(n=1？n≠1？) e△T,△u,△h,q,w trend on p-v diagram Applicability of those equations 上游充通大学 May17,2019 11 SHANGHAI JLAO TONG UNIVERSITY
May 17, 2019 11 Chap. 3 Polytropic process for closed system P, v, T relations. For all gas? For ideal gas? Four particular cases: isobaric, isothermal, isentropic, isochoric Δu, Δh, w, q for polytropic process (n=1? n≠1?) ∆T, ∆u, ∆h, q, w trend on p-v diagram n pV constant Applicability of those equations
Chap.5 Mass rate balance equation for open system dne=∑m-∑m, dt Steady flow mass balance eq., Transient not required Energy rate balance equation for open system -0.-+∑(4+号+)-∑m(么+号+%) dt Steady state energy eq.for control volume system ©Qcv,Wcv General assumptions for open system 上游充通大 May17,2019 12 SHANGHAI JLAO TONG UNIVERSITY
May 17, 2019 12 Chap. 5 Mass rate balance equation for open system Steady flow mass balance eq., Transient not required Energy rate balance equation for open system Steady state energy eq. for control volume system Qcv, Wcv General assumptions for open system