Example 17.1 CM vs.CV analysis Known: 0.15 m3 O2 cylinder,Initially t1=38 C,p=0.55 MPa,V=0.15m3. Pressure release valve:automatically open when p 0.7 MPa, ·Heating the O2: Find:2@To2=285℃ [R=260 J /(kg-K);cy=657 J/(kg-K);c=917 J/(kgK)] =0.15mi 14138C 2 告285C 055M明CY 名0.7N亚 CV g0.7p 3 上游究通大学 March 31,2018 5 SHANGHAI JIAO TONG UNIVERSITYMarch 31, 2018 5 Example 17.1 CM vs. CV analysis Known: • 0.15 m3 O2 cylinder, Initially t1=38 ℃, p1= 0.55 MPa, V=0.15m3 . • Pressure release valve: automatically open when p > 0.7 MPa, • Heating the O2 . Find: Q @ TO2 = 285 ℃ [R=260 J /(kg·K)；cV = 657 J/(kg·K)；cp= 917 J/(kg·K)]