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(本题为计算题,只填写最终答案)用泵向压力容器输水,已知:管内径 d =0.1m ,粗糙度 ε =10 -4 m ,管路总长 ( 包括局部阻力的当量长度 ) l =220m ,水的物性: ρ =1000kg/m 3 , μ =10 -3 N·s/m 2 , 容器内压力 p 2 =124kPa ( 表 ) ,外加能量 W e =364.5J/kg 。试求:(g取9.81) (1) 总阻力损失Σ h f 等于多少 J/kg ? (答案保留1位小数) (2) 管内流速 u 等于多少 m/s ? (答案保留2位小数)
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