[Utilities – Water Supply and Drainage Section] 20181008

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This post was last edited by hesonchang214 on 2018-10-8 08:38. The highest daily water consumption in a certain city is 15*104 m3/d; the daily variation coefficient of water use is 1.2, the hourly variation coefficient is 1.4, and the self-consumption coefficient of the water plant is 1.1. If a water tower is already installed in the pipeline network and it can supply 900 m3/h of water to the network at peak demand, then the design flow rate of the water pump room for supplying water to the network should be (). a、6250m3/h b、7500m3/h c、7850m3/h d、8750m3/h Answer: c. The designed flow rate for the pipeline network is Qh = 150000*1.4*24 = 8750m3/h. The water tower can supply 900 m3/h to the pipeline network; the remaining amount of water is provided by the water supply pump station, meaning that the pump station’s supply volume should be 8750 – 900 = 7850 m3/h