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9Two rigid tanks are filled with water. Tank A is 0.2 m3at 200 kPa, 150oC and tank B is 0.3 m3at saturated vapor 300 kPa. The tanks are connected by a pipe with a closed valve. We open the valve and let all the water come to a single uniform state while we transfer enough heat to have a final pressure of 300 kPa. Give the two property values that determine the final state and find the heat transfer. A
2kJ/kg 10A number of servers for the “cloud” are in a closed room of volume 200 m3and they dissipate energy at a rate of 5 kW. The room has 500 kg wood, 150 kg steel and air, with all material at 300 K, 100 kPa. Assuming all the mass heats up uniformly, how long will it take to increase the temperature 10C? t 3t