南京市某办公楼空调工程设计

前言表1-1室外气象参数表地理位置（南京）海拔(m)大气压力(Kpa)室外平均风速m/s北纬东经8.9冬季夏季冬季夏季32°00′118°48′102.52100.402.62.6冬季夏季最大冻土深度cm冬季空调室外计算温度（0C冬季空调室外计算相对湿度%夏季空调室外计算干球温度（0C夏季空调室外计算湿球温度（0C夏季平均日较差（0C-6733528.36.99室内计算参数见表1-2。表1-2室内计算参数表名称房间用途温度(℃)湿度(%)室内风速m/s夏季办公室2660v≤0.25冬季办公室2040v≤0.15一．（1-1）式中：tn——℃；tw——，℃；——/(m²·℃)——℃；△ty—C图1—1外墙示意图K=0.90W/(m².k)图1—2屋面示意图（8）内粉刷 δ=70mm，K=0.78W/(m²·k(m².k)/W图1—3内墙示意图δ=240mmK=1.76W/(m²·k)经校核满足要求。K=2.99W/(m²·k)表1-3围护结构的地点修正值td表1-4人员与照明标准房间类型照明（W/人）人员密度（人/m2）接待室600.13大会议室400.67办公室500.10门厅400.30棋牌室400.05乒乓球室400.32娱乐室400.70三．QC(t)2.外玻璃窗瞬变传热引起的冷负荷式中：CLQQC————群式中：10:0011:0012:0013:0014:0015:0016:0017:0018:00传热冷负荷表2-2东外窗瞬时传热冷负荷9:0010:0011:0012:0013:0014:0015:0016:0017:0018:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0026225424924925426527829130431512715517820222023023823823322210557875073203072802802402001474984814714614554484414384354311804186418641884190419041904904190419243746354132693116314031273141211130763039表2-2办公楼总负荷汇总表时间楼层8:009:0010:0011:0012:0013:001层2860554397547355500255124560812层2354744970450124510645064463463层3061947147473614772247758491714层3061947147473614772247758491715层3061947147473614772247758491716层3061947147473614772247758491717层3061947147473614772247758491718层3061947147473614772247758491719层30619471474736147722477584917110层30619471474736147722477584917111层328186041360260606086139963719总负荷329922536956538895542492543651559514时间楼层14:0015:0016:0017:0018:001层56831571375611656712549912层47767485394890348400462323层30619471474736147722477584层30619471474736147722477585层30619471474736147722477586层30619471474736147722477587层30619471474736147722477588层30619471474736147722477589层306194714747361477224775810层306194714747361477224775811层6625468348702827147970791总负荷575884584496587997584927560798W/m2一.围护结构基本耗热量：（2-7）式中：QJ——围K——A————tw————的保温性能以及透气状况。二.表2-3围护结构的修正率项目朝向修正率北、东北、西北朝向东、西朝向－％东南、西南朝向－％～－％南向－％～－％三.W/m2§2.4新风负荷(2-10)式中：Gwn——gwm3/h。表4-3各房间新风量计算房间号人员单位新风人员新风量新风量n（个）101625150165102625150150103425100225104625150162105625150150服务大厅6415960960门厅502010001000接待室222555055020122550114202225506120342510010020462515015920582520020020682520020020762515018420822550102娱乐室5015750750会议室150157507503012255011430222550613034251001003046251501503056251501503066251502003074251001003083025750750309425100100310625150184311625150150312625150157313225501021101425100186110242510013811038252002151104425100153110582520021311068252002131107825200283110822550186棋牌室2030600744会议室24515675675乒乓球室30257507503.1.1空调系统的划分原则(1)空调管路系统的划分原则见表3-1。表3-1空调管路系统的划分原则序号依据划分原则1负荷特性根据建筑不同的朝向划分不同的环路根据内区与外区负荷划分不同的环路根据室内热湿比大小，将相同或接近的房间划分为一个系统或环路2使用功能按房间的功能、用途、性质，将基本相同的者划分为一个区域或组成一个系统按使用时间的不同进行划分，将使用时间相同或相近的房间划分为一个系统或环路3空调房间的布置根据平面位置的不同进行分区设置4建筑层数在高层建筑中，根据设备、管路、附件等的承压能力，水系统按竖向分区，以减少系统内的设备承压为了使用灵活，也可按竖向将若干层组合成一个系统，分别设置管路系统高层建筑中，通常在公共部分与标准层之间设置转化层；因此，设计中空调管路系统也常以转化层进行竖向分区各房间之间不会互相污染；=6\*GB3⑥=7\*GB3⑦ 1、（1）℃℃kJ/kgQ=13224WM=1.78g图3-1全空气一次回风系统焓湿图（夏季）=1\*GB3①计算热湿比kJ/kg在h-d图上根据室内℃及相对湿度确定N点，得kJ/kg，g/s,过N点作kJ/kg线与相对湿度线相交得送风状态点O；kJ/kg，g/kg，℃=2\*GB3②总送风量kg/s=3702m3/h新风量：Gw=64×15=960m3=3\*GB3③混合点M的确定>10%Gw=960m3kJ/kg作的等焓线，交线为C点，得g/sKW（2）℃kJ/kg：WM=1.78g/s图3-2全空气一次回风系统焓湿图（冬季）=1\*GB3①计算热湿比kJ/kg=2\*GB3②确定送风状态点oC,确定点，得kJ/kg,g/kg；再根据冬季空调室外计算温度tw=-6oC，冬季空调室外相对湿度，确定出。然后连接和。冬季的送风量按夏季的选取：kg/skJ/kgg/kg=3\*GB3③检查是否需要预热因为不处于雾区，所以不需要进行预热。过点作等d线与等温线交于点，连接、点。2、风机盘管加新风以101办公室为例进行计算:（1）夏季：℃℃kJ/kg冷负荷Q=4207W湿负荷：M=0.167g图3-3风机盘管加新风系统焓湿图（夏季）=1\*GB3①计算热湿比kJ/kg℃及相对湿度确定N点，得kJ/kg，g/s,过N点作kJ/kg线与相对湿kJ/kg,kg/s=1503m3/hGw=6×25=150m3＜10%Gw=G×10%=1650×10%=165m3kg/skj/kg=4\*GB3④KW§3.3.1冷冻水系统§3.3.2冷却水系统=2\*GB3②表4-1风机盘管选型表房间个数101FP-102102FP-82103FP-103104FP-102105FP-7.12201FP-12.51202FP-7.11203FP-6.32204FP-102205FP-7.12206FP-7.12207FP-102208FP-12.51娱乐室FP-84会议室2FP-6.34301FP-12.51302FP-7.11303FP-6.32304FP-7.12305FP-7.12306FP-102307FP-6.32308FP-6.36309FP-52310FP-102311FP-7.12312FP-102313FP-12.511101FP-1021102FP-821103FP-12.521104FP-1021105FP-12.521106FP-12.521107FP-12.521108FP-12.51棋牌室FP-12.54会议室2FP-104乒乓球室FP-1042表4-4新风机组选型表4-5新风机组的参数150025004000260480320812201525421.52.34.681219＜＜＜148192232进出管径DN30DN30DN40长92013601980宽115011501200高590590590房间编号送风量冷负荷新冷负荷冷负荷之和总风量总负荷m3/hkwkwkwm3/hkw一层服务大厅4662146229.814632466214632一层门厅45531267310.212683910024188一层接待室4547114995.611505表4-8空调机组的性能参数产品型号KD(X)-5KD(X)-10风量500010000冷量25.284.6供冷进风干球温度2727供冷进风湿球温度19.519.5供热进风湿球温度77冷水进口温度77热水进口温度6060机外全压（6排）KPa246406水流量6.513.5水阻力KPa13.916.7风机型式直联外转子离心风机功率0.55*21.5*2压力（Pa）611611台数22换热盘管性能迎风面积（m2）0.470.97换热面积（m2）37.949.2表冷器排数6外形尺寸长（mm）16802130宽（mm）11051305高（mm）500680噪声dB（A）6266(4-2)（4-3）型号LSBLG400A制冷量KW401输入功率KW88额定电流A153能量控制25%～100%制冷剂R134a压缩机型式进口半封闭式螺杆式压缩机数量台1蒸发器型式壳管式换热器水流量m3/h69水阻力KPa39进/出温度12/7管径mmDN125冷凝器型式壳管式换热器水流量m3/h90水阻力KPa40进/出温度30/35管径mmDN125尺寸长mm3400宽mm1300高mm1660机组重量Kg1820噪声dB（A）75人风量与Ev也0.51图5-1风机盘管侧送风示意图其他房间散流器见附录六一层门厅和接待室风管布置图，则实际。取标准规格断面尺寸，故实际流速。当量直径按流速当量直径Dv=630mm及实际流速，查通风管道单位长度摩擦阻力线算图并进行粗糙度修正后的，该管道的摩擦阻力为：查得多叶调节阀：渐缩管：总的局部阻力系数为：局部阻力按下式计算:管段3-4的阻力：同理可计算出其它管道的摩擦阻力和局部阻力，具体结果见表6-1。表6-1管道的摩擦阻力和局部阻力管段编号风量m3/h风量m3/s初选风速m/s初选面积m-2管长风道amm风道bmm当量直径mmm0—192732.5764.30.59918006307052—392732.5766.50.39618.356306306303—1047201.3115.20.2523.3550050050010—1623600.6564.50.1465.240032035616—1718880.5243.50.150440032035617—1814160.3933.30.119440025030818—199440.2623.20.082432025028119—204720.13130.04442501601953—445531.26550.25326304004894—537941.0544.60.2292.76304004895—630350.8434.30.1962.75004004446—722760.6324.20.1512.74004004007—815170.4214.10.1032.73203203208—97580.21140.0532.7250200222管段编号实际流速m/s比摩阻Rm沿程阻力Pa动压Pa局部阻力名称局部阻力系数总阻力系数ξ局部阻力Pa总阻力Pa0-13.270.110.116.42新风百叶渐缩管阀门0.90.820.522.2414.414.492-35.150.5410.0015.92分流三通渐缩管调节阀0.090.10.520.7111.3121.313-105.240.441.4716.5渐缩管直流三通0.10.320.426.938.4010-165.120.462.4115.7渐缩管散流器弯头0.110.291.3921.924.2916-174.100.311.2310渐缩管散流器0.111.1111217-183.930.301.209.3渐缩管散流器0.111.110.211.4118-193.280.281.116.45渐缩管散流器0.111.17.098.2119-203.280.441.746.45渐缩管散流器0.111.17.098.833-43.950.330.679.37喷口渐缩管侧口出流1.050.1-0.031.1210.511.164-54.180.310.8510.5喷口渐缩管侧口出流1.050.1-0.031.1211.812.605-64.220.300.8010.7喷口渐缩管侧口出流1.050.1-0.031.1211.912.746-73.950.280.759.37喷口渐缩管侧口出流1.050.1-0.041.1110.411.157-84.120.330.8910.2喷口渐缩管侧口出流1.050.1-0.051.111.212.068-93.370.391.066.81喷口渐缩管侧口出流1.050.1-0.031.127.638.69与管段3-20并联，故不平衡率为：因为，＜15%满足要求同理可得出一层其它环路的风管的规格见表6-2风管的规格。表6-2风管的规格管段编号风量m3/h风量m3/s初选风速m/s初选面积m-2管长m风道amm风道bmm当量直径mm11—1218880.5243.50.1501.240032035612—1314160.3933.40.116440025030813—149440.2623.20.082432025028114—154720.13130.0444250160195解：1.管道的布置及各管道进行编号，1-2-4最有利环路为5-9-10-11-12。支管为：a、b、c、d、e、f、g、h、i根据各管道的分量及选定的流速，确定最不利管路各管段的断面尺寸及沿程阻力和局部阻力如下。管段1—2摩擦阻力计算如下。取管内流速，则实际。取标准规格断面尺寸，故实际流速。当量直径Dv=320mm，，。00时查得b/h=1.0，R/b=1.0，表6-3管道的摩擦阻力和局部阻力管段编号风量m3/h风量m3/s初选风速m/s初选面积管长m风道amm风道bmm当量直径mm1-2810.0233.20.00761201201202-31620.0453.50.01341201201203-42370.0663.90.01741601201374-53120.0874.30.020272001201505-68520.2375.20.0464250160195a810.02330.0082120120120b750.02130.0072120120137C750.02130.0072120120137管段编号实际流速m/s比摩比摩阻Rm沿程阻力Pa动压Pa局部阻力名称阻力系数总局部阻力系数局部阻力Pa总阻力Pa1-21.560.674.031.46调节阀弯头0.520.2921.11.615.642-33.130.823.295.86分流三通0.240.241.414.693-43.431.054.197.05分流三通渐缩管0.240.10.342.406.594-53.611.3135.247.82分流三通弯头渐缩管0.040.290.10.433.3638.65-65.921.506.0021.00分叉三通弯头渐缩管0.3040.3320.11.1423.9429.95a1.560.581.161.46调节阀弯头0.520.470.991.452.61b1.090.440.870.71调节阀弯头0.520.470.990.701.57C1.090.440.870.71调节阀弯头0.520.470.990.701.57表6-4管路的风管的规格管段编号风量m3/h风量m3/s初选风速m/s初选面积管长m风道amm风道bmm当量直径mm实际流速m/s12-111580.0443.30.01361601201372.2911-103150.0883.50.02542001201503.6510-94650.1293.80.03442501201624.319-55400.1504.20.03692502002223.00e750.02130.00721201201201.45f82.50.02330.00821201201201.59g750.02130.00721201201201.45h82.50.02330.00821201201201.59i750.02130.00721201201201.45j750.02130.00721201201201.45n750.02130.00721201201201.45管段编号比摩比摩阻Rm沿程阻力Pa动压Pa局部阻力名称阻力系数总局部阻力系数局部阻力Pa总阻力Pa12-110.724.323.14分流三通0.2420.481.505.8211-100.823.297.98分流三通渐缩管0.2420.10.584.637.9110-90.993.9511.12分流三通渐缩管0.2420.10.586.4510.409-50.746.685.40分流三通弯头渐缩管0.240.290.10.633.4010.09e0.581.161.26调节阀弯头0.520.470.991.242.40f0.581.161.52调节阀弯头0.520.470.991.502.67g0.581.161.26调节阀弯头0.520.470.991.242.40h0.581.161.52调节阀弯头0.520.470.991.502.67i0.581.161.26调节阀弯头0.520.470.991.242.40j0.581.161.26调节阀弯头0.520.470.991.242.40n0.581.161.26调节阀弯头0.520.470.991.242.40，＞15%表6-5各层水流量表楼层水流量（kg/h）水流量（m3/h）1F3441834.422F2000920.013F2260822.614F2260822.615F2260822.616F2260822.617F2260822.618F2260822.619F2260822.6110F2260822.6111F3396433.96总流量69255269.26图6-3最不利环路水力计算图表6-6最不利环路水力计算705.02.042.0610661表6-7最有利环路水力计算944.0595.0705.0652.4466.0570.0940.0920.01374.01374.0948.0940.0570.0466.0663.6726.0588.0888.0900.9900.9869.7869.7861.9861.9877.5877.5877.5595.0705.01.311.14945.141.000.40595.400.730.07705.070.620.06652.460.510.34466.340.410.17570.170.410.08940.080.330.16920.160.131.321375.320.130.061374.060.330.07948.070.410.17940.170.510.34570.340.620.18466.180.330.09663.690.410.17726.170.730.29588.290.860.70888.701.000.36901.261.000.40901.301.310.26869.961.310.52870.221.470.43862.331.470.43862.331.650.48877.981.650.97878.471.840.53768.831.840.53788.532.042.0610661汇总信息如下表6-11。表6-11汇总信息表项目环路近平衡。Q≤7KW，DN=20mm;Q=7.1-17.6KW,DN=25mm;Q=17.7-100KW,DN=32mm;Q=101-176KW,DN=40mm;Q=177-598KW,DN=50mm;Q=599-1055KW,DN=80mm;Q=1056-1512KW,DN=100mmQ=1513-12462KW,DN=125mm;Q≥12462KW,DN=150mm.空供图8-1集水器和分水器的构造图根据《中央空调设备选型手册》P650，分水器和集水器尺寸确定可筒体直径D（mm）封头高度h（mm）排污管规格dp（mm）疏水管规格ds（mm）3771195025DBNL3-100圆形型号高mm直径mm进水管DBNL3-10035533732出水管排污管补水管§8.3膨胀水箱的选择图8-2膨胀水箱构造图VcQ（8-1）式中：V——Vc——第171Vc=31.2L/kw；Q——V=0.015×31.2×587.997=275.18L水箱形式水箱型号公称容积有效容积外形尺寸高（㎡）（m3）长宽（mm）mm方形10.50.61900900900水箱配管的公称直径DN/mm水箱自重溢流管排水管膨胀管信号管循环管kg4032252020156.3§8.3水泵的选择§8.3.1=1.1。69×2×1.1=75.9H=·Hmax（8-2）式中：mH2O；=1.1。系统总阻力43.8KPa末端放气阀阻力：40KPa蒸发器阻力39KPa集水器和分水器的阻力约为45kpa。末端放气阀阻力：40KPaH=1.1×（4.38+3.9+4.5+4）=18.45mH2O型号流量扬程转速效率汽蚀余量m3/smr/min%mSYL80-125A100202900724.5功率（kw