Homework Question 8: 4.74 Figure P4.74 provides steady-state operating data for a cogeneration system with water vapor at 20 bar, 360°C entering at location 1. Power is developed by the system at a rate of 2.2 MW. Process steam leaves at location 2, and hot water for other process uses leaves at location 3. Evaluate the rate of heat transfer, in MW, between the system and its surroundings. Let g = 9.81 m/s². m₁ = 1.5 kg/s P₁ = 20 bar T₁ = 360°C V₁ = 50 m/s Saturated vapor P₂ = 1 bar V₂ = 100 m/s m₂ = m₂ 10 m FIGURE P 4-74 2.2 MW Saturated liquid P3= 1 bar V3 = 100 m/s

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