【Daily Question】Utilities - Water Supply and Drainage - 20200426
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A residential building is equipped with a centralized hot water supply system. The total volume of the pipes is 1800 L. The temperature of the hot water supplied is 60°C (density: 0.9832 kg/L), the temperature of the return water is 50°C (density: 0.9881 kg/L), and the temperature of the cold water is 10°C (density: 0.9997 kg/L). The distance from the bottom of the water heater to the surface of the cold water tank on the roof is 66 m. What should be the height of the water level in the expansion tank? ( ) m. A.0.33 B.0.55 C.1.10 D.1.11 Answer: A
A residential building is equipped with a centralized hot water supply system. The total volume of the pipes is 1800 L. The temperature of the hot water supplied is 60°C (density: 0.9832 kg/L), the temperature of the return water is 50°C (density: 0.9881 kg/L), and the temperature of the cold water is 10°C (density: 0.9997 kg/L). The distance from the bottom of the water heater to the surface of the cold water tank on the roof is 66 m; therefore, the height of the water level in the expansion tank should be (A. 0.33) m.