Example 32.3 System boundary 0=-1.2kW 60 kW Known:steady state,Wsi,Wso,Q Tp and Te 58.8kW Tp=300 K Find (1)o of system (a) (2)o of system (b) Gearbox (a) At this boundary the temperature is Temperature Tr=293 K variation 60 kW 58.8kW 上降充通大学 (b) April 20,2018 11 SHANGHAI JIAO TONG UNIVERSITYApril 20, 2018 11 Example 32.3 Known: steady state, Ws,i, Ws,o, Q, Tb and Tf Find (1) σ of system (a) (2) σ of system (b) (a) (b)