表1离心泵特性曲线测定实验数据处理结果表
流量Qm3h10159830354475595575319014105912027136491494716337压力表读数MPa021021020202019018017016014012009真空表读数电功率表读数流量MPaWQm3h100050006000700080010011001200140016001900210024990101510401075110511351180122012551295131013350159830354475595575319014105912027136491494716337扬程HmH2O柱轴功率N轴kW泵效率η22202230213921492169207719861904182216491465119008608809009309609810210610911211311600011011957280536654322475651825476544952424566
f表1直管摩擦阻力系数实验数据处理结果表
直管阻力流量计读数倒U差压计倒U压差计阀门压差读压差计示压头损失m3h1左Rmm右Rmm数△pkPa数PahfmH2O041451204238003226773002740484559041910038359580036806346800409100655755200589076479003988010078364008020964985038500155110902011351245338034620265183306018761515757030550395264015027021964550237206453989540408324210307050000721529315051000000102343724101540000157614633700238500024409直管流速ums1044805240688083010481354164920752643320040415057直管摩擦阻力系数λ002920028600266002490022100219002120020300221002140020600204
Re902144105616913862211672267211233727284363322531418066853248516447030814130110187628
f表2阀门局部阻力系数实验数据处理结果表
流量计读数m3h10410480630760961241511924229337463阀门压差读阀门直管流数△pkPa速ums10320198903802329065030561000368715504657265060163950732664509218103011741150514215241017951370022463阀门直管雷诺数Re601125703756923679111428014075111818035221389827856993548101429584154247826788309阀门处摩擦hf局部直管阻力系数λmH2O柱003650000900350000120032500019003090002600291000390027300062002590008700245001300023100199002210027800209004190019800624Σhf局部mH2O柱003270038900665010230158602712040430660110541154032466537867hf局部阀门mH2O柱003180037700646009970154702651039560647110343151252424537243ξ157813631356143813981435144514931471146714751447
阀门局部阻力系数ξ的平均值：1447
λ
010
1000
10000
100000
1000000
Re
y01036x01457R207888
001
图1Re和λ的关系曲线
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