【Daily Question】Utilities - Water Supply and Drainage - 20200410

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A residential building has 144 households, with 3.5 people per household, and it is equipped with a full-time centralized hot water supply system. The water consumption quota for hot water is set at 80 L/(person·day) (at 60°C, ρ=0.9832 kg/L), while the temperature of cold water is assumed to be 10°C (ρ=0.9997 kg/L). Each household has two bathrooms and one kitchen. Each bathroom is equipped with a bathtub (with a shower; water consumption: 300 L/h, water temperature: 40°C, ρ=0.9922 kg/L; simultaneous use rate: 70%), a sink (water consumption: 30 L/h, water temperature: 30°C, ρ=0.9957 kg/L; simultaneous use rate: 50%), and a toilet. The kitchen has a washing basin (water consumption: 180 L/h, water temperature: 50°C, ρ=0.9881 kg/L; simultaneous use rate: 70%). If the hourly variation coefficient is 3.28, the designed hourly heat consumption for this residential building is ( ) W. A.315061.6 B.274718.3 C.1495562.9 D.2991125.8 Answer: A