给水设计秒流量计算举例

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n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（N=1.0）;坐便器1具（N=0.5）;洗脸盆1只（N=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层普通住宅川型，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（N=1.0 ）;坐便器2 具（N=0.5*1 = 1）;洗脸盆 2 只（N=0.75*2=1.5 ）;浴盆 1 只 （ N=1.2 ）,淋浴器 1 具（N

2、=0.75 ）; 洗衣机水嘴1个（N=1.0）。计算给水设计秒流量。si：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：250*3.5* 2.8Uo=0.03540.2* 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

3、率为：280*4*2.5U0=0.02510.2* 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：U 0(23)4*6*10*2*°.°354 七45*4*1。*。.0251 二 0.03184*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*0.0251U0(23)0.03014* 6* 10* 2 6.45* 4* 10* 2查表 2.3.1; a c=0.019

4、47设计秒流量计算如下表：浴盆(1.20)坐便器(0.5)洗脸 盆(0.75洗涤盆淋浴器洗衣机(1.0)刀NgUo (%)acU(%)q(L/s)(1.0)(0.75)入户管A00.50.7510.75140.03540.024130.52070.42A1A2034.564.56240.03540.024130.22701.09A2A306912912480.03540.024130.16731.61A3A40913.51813.518720.03540.024130.14082.03A4A501218241824960.03540.024130.12502.40A5A601522.53022

5、.5301200.03540.024130.11422.74A6A7018273627361440.03540.024130.10623.06A7A802131.54231.5421680.03540.024130.10003.36A8A9024364836481920.03540.024130.09503.65A9A1002740.55440.5542160.03540.024130.09093.93A101030456045602400.03540.024130.08734.191206090120901204800.03540.024130.06836.56入户管C1.211.510.7

6、516.450.02510.015220.40750.53C1C24.84643425.80.02510.015220.21131.09C2C39.681286851.60.02510.015220.15371.59C3C414.412181291277.40.02510.015220.12811.98C4C519.21624161216103.20.02510.015220.11292.33C5C62420302015201290.02510.015220.10252.64C6C728.82436241824154.80.02510.015220.09482.94C7C833.6284228

7、2128180.60.02510.015220.08883.21C8C938.43248322432206.40.02510.015220.08403.47C9C1043.23654362736232.20.02510.015220.08003.72C1024840604030402580.02510.015220.07663.9523481001501601201607380.03180.020950.05648.3334961402102001502009960.03010.019470.04999.93L11h.11 1|_nJ例2:有一 26层高级宾馆， 6层至26层为客房，给水采用分

8、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。B2:计輔图取用水定额：400L/人?天；用水时间计算：查表2.2.2,数为462床，中区和高区最高日最高时生活用水量为:400*462*2.0Qh=15.4m 3/h24*1000中区设计秒流量计算：24小时;时变化系数2.0o总床位Qg= 0.2 Ng a =2.5浴盆(1.0)坐便器(0.5 )洗脸盆(0.5 )刀Ngq(L/s)浴盆(1.0)坐便器(0.5 )洗脸盆(0.5 )刀Ngq(L/s)标准间10.50.520.4091

9、01899363.001221140.801011201010403.162342281.411112402020804.4734633121.7312136030301205.4845844162.0013148040401606.32561055202.24141510050502007.07671266242.45151612060602407.75781477282.65161722011011044010.49891688322.83例3: 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。ng二主左咒匕壬办公楼给水设计秒流量计算计算：Q

10、g=0.2*： * . Nga =1.5坐便器(0.5 )蹲便器(6.0)拖布池(1.0)小便斗(0.5)洗脸盆(0.5)刀Ng计算q(L/s)设计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

11、.118190.5000.5010.300.2201900000.50.50.210.119210.5000.50.51.50.370.3222300000.50.50.210.123210000110.300.221240.5000.51.52.50.470.4724250.50011.530.520.5225260.5001.51.53.50.560.5626270.50021.540.600.627280.5002.51.54.50.640.64AB04.522210.52.172.17BC09444212.572.57CE013.566631.52.882.88CD018888423.

12、143.14DE0.522.51010.510.5543.403.4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。平面布置囹计算：qg=' q°Nob查表237，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*0.1*0.7=0.07,取 qg=0.1L/s23: qg=0.1 L/s34: qg=1*0.1*0.7+1*0.1*1=0.17 L/s,45: qg=1

13、*0.1*0.7+2*0.1*1=0.27 L/s,56: qg=1*0.1*0.7+3*0.1*1=0.37 L/s,67: qg=2*0.1*0.7+3*0.1*1=0.44 L/s,78: qgi=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/sqg=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/sqg=0.62+1.2=1.82L/s水力计算:/ u 1?建

14、 nO®沿程损失计算:1a1b浴盆(1.00)0坐便器洗脸盆刀Ng0.5(0.5)0(0.5 )0.51b1c00.50.511c110.50.52122114234228346331245844165610552067126624781477288916883291018993610112010104011124020208012136030301201314804040160141510050502001516120606024016172201101104401718220110110440局部损失计算：hj=0.3*3.6=1.08m刀 h=1.08+3.60=4.68m最不

15、利点(洗脸盆)流出水头为 5m屋顶水箱底标高为 104.30mqD(mm) i(m/m)V(m/s)L(m)h(m)0.10150.0340.573.200.140.20200.0300.640.700.030.40200.1091.270.600.090.80320.0401.003.600.191.41400.0391.133.600.181.73400.0561.383.600.262.00500.0251.023.600.122.24500.0301.143.600.142.45650.0100.743.600.052.65650.0120.803.600.052.83650.0130.853.600.063.00650.0150.903.600.073.16650.0160.9512.000.254.47800.0110.894.500.135.48800.0161.099.000.196.321000.0070.819.200.017.071000.0090.901.000.087.751000.0100.997.000.1410.491000.0181.3410.700.2510.491000.0181.3449.301.163.601节点标高为23.50m，10节点标