Example 33.2 Known:metal bar immersing in a water tank System boundary Find:(a)final equilibrium temperature (b)entropy produced insulated Metal bar: Water: Tmi=1200°K Twi=300K Cm=0.42kJ/kg·K Cw=4.2kJ/kg·K Assumption: mm =0.3 kg mw =9 kg 1. Closed system 2. No heat and work>isolated system 3. △PE,△KE neglected 4. Metal bar,water both incompressible 上游充通大学 April 26,2018 6 SHANGHAI JLAO TONG UNIVERSITYApril 26, 2018 6 Example 33.2 Known: metal bar immersing in a water tank insulated Find: (a) final equilibrium temperature (b) entropy produced Assumption: 1. Closed system 2. No heat and work  isolated system 3. ∆PE, ∆KE neglected 4. Metal bar, water both incompressible