2 (25 points) Consider a shower head and an electric resistance system as the control volume (steady flow system) shown below This system heats the water (p 1 Kg L) from 16C to 43C at a steady rate of 10 L min This system is connected to a heat exchanger for preheating liquid water before using the water head Actually, water at 43C is to hot for taking a shower with HO at T From heat exchanger Mixer IS mi Electric Heater HO at T2 2 3 The entropy generation along with T1 16C is Sgen 0 0623kJ K True False 2 4 If T1 30C, then the required electric power input is Win,new 9 07kW True False 2 5 The entropy generation along with T1 30C is Sgen 0 0293kJ K True False 2 3 The entropy generation along with T1 16C is Sgen 0 0623kJ K True False 2 4 If T1 30C, then the required electric power input is Win,new 9 07kW True False 2 5 The entropy generation along with T1 30C is Sgen 0 0293kJ K True False

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Question: 2. (25 points) Consider a shower head and an electric resistance system as the control volume (steady-flow system) shown below. This system heats the water

2. (25 points) Consider a shower head and an electric resistance system as the control volume (steady-flow system) shown below. This system heats the water (p - 1 Kg/L) from 16C to 43C at a steady rate of 10 L/min. This system is connected to a heat exchanger for preheating liquid water before using the water head. Actually, water at 43C is to hot for taking a shower with. HO at T From heat exchanger Mixer IS mi Electric Heater HO at T2

2. (25 points) Consider a shower head and an electric resistance

2.3 The entropy generation along with T1=16C is Sgen=0.0623kJ/K. True False 2.4 If T1=30C, then the required electric power input is Win,new=9.07kW True False 2.5 The entropy generation along with T1=30C is Sgen=0.0293kJ/K. True False 2.3 The entropy generation along with T1=16C is Sgen=0.0623kJ/K. True False 2.4 If T1=30C, then the required electric power input is Win,new=9.07kW True False 2.5 The entropy generation along with T1=30C is Sgen=0.0293kJ/K. True False

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