學(xué)校用房（自編號教工宿舍1、2號樓）各層用水點(diǎn)壓力計(jì)算表

各層用水點(diǎn)壓力計(jì)算表項(xiàng)目名稱：學(xué)校用房（自編號教工宿舍1、2號樓）一、項(xiàng)目概況項(xiàng)目地位于廣州市白云區(qū)北郊鐘落潭廣新路388號，仲愷農(nóng)業(yè)工程學(xué)院白云校區(qū)校園內(nèi)南端，項(xiàng)目規(guī)劃總用地面積為1478859m2,規(guī)劃建設(shè)用地面積為1085146m2。綠化率為35%。本次參評建筑為1、2號宿舍樓，總建筑面積為5575.8m2,宿舍共152戶，建筑層數(shù)為7層。二、計(jì)算依據(jù)《綠色建筑評價(jià)標(biāo)準(zhǔn)》（GB/T50378-2014）6.2.3給水系統(tǒng)無超壓出流現(xiàn)象，評價(jià)總分值為8分。用水點(diǎn)供水壓力不大于0.30MPa，得3分：不大于0.20MPa，且不小于用水器具要求的最低工作壓力，得8分。三、計(jì)算過程本項(xiàng)目給水系統(tǒng)豎向上不分區(qū)。生活加壓設(shè)備屋頂層（22.40）。供水形式為上行下給，加壓設(shè)備參數(shù)為Q=15m3/hH=15mN=2.20kW。本次計(jì)算按最不利給水點(diǎn)考慮，末端支管水頭損失（含水表）為0.12MPa，計(jì)算表中用水點(diǎn)計(jì)算壓力已考慮此末端水頭損失量。加壓給水計(jì)算模型如下：為簡便計(jì)算，將各節(jié)點(diǎn)間的流量及水頭損失計(jì)算后，得下圖：J1L-5/J2L-5的立管頂部壓力為0.15+0.01x（0.2+0.8+0.3）-0.01x（0.14+0.095+0.069+0.032+0.07+0+0.037+0+0.113）=0.157MPa，樓層靜高差立管管徑設(shè)計(jì)秒流量水頭損失系數(shù)管段長度用水點(diǎn)計(jì)算壓力是否設(shè)減壓閥閥后壓力mmmL/smH2O/m水平豎向（MPa）（MPa）719.2401.0790.02895203.20.157616320.9970.05649903.20.188074512.8320.9090.04761503.20.218266是0.249.6320.8120.03864803.20.248742是0.236.4320.7010.02945803.20.279505是0.223.2250.5710.06804903.20.310562是0.210200.4030.1708603.20.340385是0.2同理，計(jì)算J1L-4/J2L-4的立管頂部壓力為，0.15+0.01x（0.2+0.8+0.3）-0.01x（0.14+0.095）=0.16MPa樓層靜高差立管管徑設(shè)計(jì)秒流量水頭損失系數(shù)管段長度用水點(diǎn)計(jì)算壓力是否設(shè)減壓閥閥后壓力mmmL/smH2O/m水平豎向（MPa）（MPa）719.2401.0790.02895203.20.16616320.9970.05649903.20.191074512.8320.9090.04761503.20.221266是0.249.6320.8120.03864803.20.251742是0.236.4320.7010.02945803.20.282505是0.223.2250.5710.06804903.20.313562是0.2計(jì)算J1L-8/J2L-8的立管頂部壓力為，0.15+0.01x（0.2+0.8+0.3）-0.01x（0.14+0.095+0.0069）=0.161MPa樓層靜高差立管管徑設(shè)計(jì)秒流量水頭損失系數(shù)管段長度用水點(diǎn)計(jì)算壓力是否設(shè)減壓閥閥后壓力mmmL/smH2O/m水平豎向（MPa）（MPa）719.2501.8740.02260303.20.161616501.4210.01355103.20.192277512.8401.2940.04052103.20.223843是0.249.6401.1550.03284403.20.254546是0.236.4320.9970.05649903.20.285495是0.223.2250.8120.15688203.20.315687是0.210200.5710.32557303.20.342667是0.2計(jì)算J1L-3/J2L-3的立管頂部壓力為，0.15+0.01x（0.2+0.8+0.3）-0.01x（0.14+0.095+0.0069+0.0032）=0.161MPa樓層靜高差立管管徑設(shè)計(jì)秒流量水頭損失系數(shù)管段長度用水點(diǎn)計(jì)算壓力是否設(shè)減壓閥閥后壓力mmmL/smH2O/m水平豎向（MPa）（MPa）719.2401.0790.02895203.20.160549616320.9970.05649903.20.191623512.8320.9090.04761503.20.221815是0.249.6320.8120.03864803.20.252291是0.236.4320.7010.02945803.20.283054是0.223.2250.5710.06804903.20.314111是0.210200.4030.1708603.20.343934是0.2計(jì)算J1L-2/J2L-2的立管頂部壓力為，0.15+0.01x（0.2+0.8+0.3）-0.01x（0.14+0.095+0.0069+0.0032+0.07）=0.159849MPa樓層靜高差立管管徑設(shè)計(jì)秒流量水頭損失系數(shù)管段長度用水點(diǎn)計(jì)算壓力是否設(shè)減壓閥閥后壓力mmmL/smH2O/m水平豎向（MPa）（MPa）719.2501.8740.02260303.20.159849616501.4210.01355103.20.191126512.8401.2940.04052103.20.222692是0.249.6401.1550.03284403.20.253395是0.236.4320.9970.05649903.20.284344是0.223.2250.8120.15688203.20.314536是0.210200.5710.32557303.20.341516是0.2因J1L-7/J2L-7與J1L-2/J2L-2在立管頂部是相連的，故立管頂部壓力相同，支管壓力與J1L-2/J2L-2一致，不另計(jì)算。計(jì)算J1L-6/J2L-6的立管頂部壓力為，0.15+0.01x（0.2+0.8+0.3）-0.01x（0.14+0.095+0.0069+0.0032+0+0.037）=0.161MPa樓層靜高差立管管徑設(shè)計(jì)秒流量水頭損失系數(shù)管段長度用水點(diǎn)計(jì)算壓力是否設(shè)減壓閥閥后壓力mmmL/smH2O/m水平豎向（MPa）（MPa）719.2401.0790.02895203.20.159479616320.9970.05649903.20.190553512.8320.9090.04761503.20.220745是0.249.6320.8120.03864803.20.251221是0.236.4320.7010.02945803.20.281984是0.223.2250.5710.06804903.20.313041是0.210200.4030.1708603.20.342864是0.2因J1L-1/J2L-1與J1L-6/J2L-6在