Continue Diesel Cycle T p=const Diesel cycle efficiency: v=const For m-constant:.=V3 and r=V I V2 Qout Wret=m-l9oul=1-9ou=1-u-UL=1-C(T,-T) S1=S2 S3= A Qin Qin h3-h2 cp(T3-T2) …减 k(T3-T2) k-1 For is-→2是-/ For a constant pressure process2→3：p2=P3→ RT2 RT T → V2 V3 V2 上游充通大 May9,2019 4 SHANGHAI JIAO TONG UNIVERSITYMay 9, 2019 4 Continue Diesel Cycle Diesel cycle efficiency: 3 1 c 2 2 v v For m=constant: r and r v v   s T 1 2 4 3 s1=s2 s3=s4 qin qout net v 4 1 in out out 4 1 th in in in 3 2 p 3 2 w c (T T ) q q q u u 1 1 1 q q q h h c (T T )               4 1 3 2 4 1 1 th 3 2 2 T T T T 1 (T T ) T 1 1 k(T T ) T k 1                            k 1 2 1 k 1 1 2 T v For isentropic process 1 2: r T v            2 3 3 3 2 3 c 2 3 2 2 RT RT T v For a constant pressure process 2 3: p p r v v T v       