给水设计秒流量计算举例1

1、住宅给水设计秒流量计算例1：生活给水设计计算草图如图1所示，立管A和B服务 于每层六户的10层普通住宅II型，每户一厨一卫，生活热 水由家用燃气热水器供应，每户的卫生器具及当量为：洗涤 盆1只3=1.0）；坐便器1具（N=0.5）；洗脸盆1只3=0.75）； 淋浴器1具（N=0.75）；洗衣机水嘴1个（N=1.0）。立管C 和D服务于每层四户的10层普通住宅III型，每户两卫一厨， 生活热水由家用燃气热水器供应，每户的卫生器具及当量 为：洗涤盆1只3=1.0）；坐便器2具（N=0.5*1 = 1）；洗 脸盆 2 只3=0.75*2=1.5）；浴盆 1 R（N=1.2）,淋浴器 1 具（N=0.

2、75）；洗衣机水嘴1个（N=1.0）。计算给水设计秒 流量。计算：立管A和B：查表2.2.1,取生活用水定额：250L/人 天；用水时间24小时；时变化系数2.8。设户均人数3.5人。查表2.1.1，小计户当量Ng=4.0。最大用水时卫生器具给水当量平均出流概率为：U = 250*3.5*2.8 =0.03540 0.2*4*24* 3600查表 2.3.1；a c=0.02413立管C和D：查表2.2.1，取生活用水定额：280L/ 人天；用水时间24小时；时变化系数2.5。设户均人数4 人。查表2.1.1，小计户当量Ng=6.45。最大用水时卫生器具给水当量平均出流概率为：U =28*4*

3、2.5=0.02510 0.2*6.45*24*3600查表 2.3.1;a c=0.01522管段23的最大用水时卫生器具给水当量平均出流概率为：_ 4*6*10*2*0.0354 + 6.45*4*10*0.0251 _003180(23)4*6*10*2 + 6.45*4*10.查表 2.3.1;a c=0.02095管段34的最大用水时卫生器具给水当量平均出流概率为：_ 4*6*10*2*0.0354 + 6.45*4*10*2*0.0251 _0 03010(23)4*6*10*2 + 6.45*4*10*2 .查表 2.3.1;a c=0.01947设计秒流量计算如下表：浴盆坐便器

4、洗脸洗涤盆淋浴器洗衣机 （1.0）(1.20(0.5盆(1.0(0.75ENgU(%)acU(%)q(L/s)(0.75)入户管A 00.50.7510.75140.03540.024130.52070.42A1A2034.564.56240.03540.024130.22701.09A2A306912912480.03540.024130.16731.61A3A40913.51813.518720.03540.024130.14082.03A4A501218241824960.03540.024130.12502.40A5A601522.53022.5301200.03540.024130.

5、11422.74A6A7018273627361440.03540.024130.10623.06A7A802131.54231.5421680.03540.024130.10003.36A8A9024364836481920.03540.024130.09503.65A9A1002740.55440.5542160.03540.024130.09093.93A101030456045602400.03540.024130.08734.191206090120901204800.03540.024130.06836.56入户管C1.211.510.7516.450.02510.015220.4

6、0750.53C1C24.84643425.80.02510.015220.21131.09C2C39.681286851.60.02510.015220.15371.59C3C414.412181291277.40.02510.015220.12811.98C4C519.21624161216103.20.02510.015220.11292.33C5C62420302015201290.02510.015220.10252.64C6C728.82436241824154.80.02510.015220.09482.94C7C833.62842282128180.60.02510.01522

7、0.08883.21C8C938.43248322432206.40.02510.015220.08403.47C9C10 43.23654362736232.20.02510.015220.08003.72C1024840604030402580.02510.015220.07663.9523481001501601201607380.03180.020950.05648.3334961402102001502009960.03010.019470.04999.93例2：有一 26层高级宾馆，6层至26层为客房，给水采用 分区供水，-1层至5层为低区，6层至15层为中区，16层 至26层为高

8、区，高区和中区通过屋顶水箱分别供水，卫生 间平面和计算简图如图，计算中区给水设计秒流量。图2：计算简图计算：查表2.2.2，取用水定额：400L/A天用水时间24JL-IO141=小时；时变化系数2.0。总床位数为462床，中区和高区最 高日最高时生活用水量为:Q = 400*462*2.0 =i5.4m3/h h 24*1000中区设计秒流量计算：Qg=0.2* *a =2.5浴盆 (1.0)坐便器 (0.5)洗脸盆 (0.5)ENgq(L/s)浴盆 (1.0)坐便器 (0.5)洗脸盆 (0.5)ENgq(L/s)标准间10.50.520.40 9101899363.001221140.80

9、 1011201010403.162342281.41 1112402020804.4734633121.73 12136030301205.4845844162.00 13148040401606.32561055202.24 141510050502007.07671266242.45 151612060602407.75781477282.65 161722011011044010.49891688322.83例3： 一办公楼公共卫生间布置如下，该办公楼共有4层，2 至4层不设无障碍卫生间，计算各管段给水设计秒流量。办公楼给水设计秒流量计算计算如Qg= 0.2*a=1.5坐便器蹲便器拖布

10、池小便斗洗脸盆V Nrr计算设计(0.5)(6.0)(1.0)(0.5)(0.5)LNgq(L/s)q(L/s)1200000.50.50.210.1230000110.300.23400.50011.51.571.4450100121.621.625601.50012.51.671.67670310151.871.877804.52017.52.022.029100010010.300.2101100.51001.51.571.411120110021.621.6212601.51002.51.671.6717180000.500.50.210.118190.5000.5010.300.22

11、01900000.50.50.210.119210.5000.50.51.50.370.3222300000.50.50.210.123210000110.300.221240.5000.51.52.50.470.4724250.50011.530.520.5225260.5001.51.53.50.560.5626270.50021.540.600.627280.5002.51.54.50.640.64AB04.522210.52.172.17B C09444212.572.57CE013.566631.52.882.88CD018888423.143.14DE0.522.51010.510

12、.5543.403.4例4：某市体育馆运动员休息室卫生间平面布置如图，计算 给水设计秒流量。计算：qg= q0 N 0b查表2.3.7,同时给水百分数为：洗涤池(qo=O.3,b=15%),洗手盆(qo=O.1,b=7O% ),洗脸盆(qo=O.1,b=8O %),淋浴器(qo=O.1,b=1OO%),大便器自闭式冲洗阀(qO=1.2,b=2%),1 2： qg=1*O.1*O.7=O.O7,取 qg=O.1L/s23： qg=O.1 L/s34： qg=1*O.1*O.7+1*O.1*1=O.17 L/s,45： qg=1*O.1*O.7+2*O.1*1=O.27 L/s,56： qg=1*

13、O.1*O.7+3*O.1*1=O.37 L/s,67： qg=2*0.1*0.7+3*0.1*1=0.44 L/s,78： qg1=1*0.1*0.8+2*0.1*0.7+3*0.1*1=0.52 L/s, qg2=1.2*2*0.02=0.048,取 qg2=1.2L/s qg=0.52+1.2=1.72L/s89： qg1=1*0.1*0.8+4*0.1*0.7+3*0.1*1=0.62 L/s, qg2=1.2*5*0.02=0.12,取 qg2=1.2L/s qg=0.62+1.2=1.82L/s水力计算:心14甘 世 七 F 9. 8 7 r-cJL沿程损失计算:浴盆 (1.00)

14、坐便器(0.5)洗脸盆 (0.5)ENgqD(mm)i(m/m)V(m/s)L(m)h(m)1a1b000.50.50.10150.0340.573.200.141b1c00.50.510.20200.0300.640.700.031c110.50.520.40200.1091.270.600.091221140.80320.0401.003.600.192342281.41400.0391.133.600.1834633121.73400.0561.383.600.2645844162.00500.0251.023.600.12561055202.24500.0301.143.600.146

15、71266242.45650.0100.743.600.05781477282.65650.0120.803.600.05891688322.83650.0130.853.600.069101899363.00650.0150.903.600.071011201010403.16650.0160.9512.000.251112402020804.47800.0110.894.500.1312136030301205.48800.0161.099.000.1913148040401606.321000.0070.819.200.01141510050502007.071000.0090.901.000.08151612060602407.751000.0100.997.000.14161722011011044010.491000.0181.3410.700.25171822011011044010.491000.0181.3449.301.163.60局部损失计算：h=0.3*3.6=1.08mjEh=1.08+3.60=4.68m最不利点(洗脸盆)流出水头为5m屋顶水箱底标高为104.30m1节点标高为23.50m，10节点标