南京市某辦公樓空調(diào)工程設計

前言表1-1室外氣象參數(shù)表地理位置（南京）海拔(m)大氣壓力(Kpa)室外平均風速m/s北緯東經(jīng)8.9冬季夏季冬季夏季32°00′118°48′102.52100.402.62.6冬季夏季最大凍土深度cm冬季空調(diào)室外計算溫度（0C冬季空調(diào)室外計算相對濕度%夏季空調(diào)室外計算干球溫度（0C夏季空調(diào)室外計算濕球溫度（0C夏季平均日較差（0C-6733528.36.99室內(nèi)計算參數(shù)見表1-2。表1-2室內(nèi)計算參數(shù)表名稱房間用途溫度(℃)濕度(%)室內(nèi)風速m/s夏季辦公室2660v≤0.25冬季辦公室2040v≤0.15一．（1-1）式中：tn——℃；tw——，℃；——/(m2·℃)——℃；△ty—C圖1—1外墻示意圖K=0.90W/(m2.k)圖1—2屋面示意圖（8）內(nèi)粉刷 δ=70mm，K=0.78W/(m2·k(m2.k)/W圖1—3內(nèi)墻示意圖δ=240mmK=1.76W/(m2·k)經(jīng)校核滿足要求。K=2.99W/(m2·k)表1-3圍護結(jié)構(gòu)的地點修正值td表1-4人員與照明標準房間類型照明（W/人）人員密度（人/m2）接待室600.13大會議室400.67辦公室500.10門廳400.30棋牌室400.05乒乓球室400.32娛樂室400.70三．QC(t)2.外玻璃窗瞬變傳熱引起的冷負荷式中：CLQQC————群式中：10:0011:0012:0013:0014:0015:0016:0017:0018:00傳熱冷負荷表2-2東外窗瞬時傳熱冷負荷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辦公樓總負荷匯總表時間樓層8:009:0010:0011:0012:0013:001層2860554397547355500255124560812層2354744970450124510645064463463層3061947147473614772247758491714層3061947147473614772247758491715層3061947147473614772247758491716層3061947147473614772247758491717層3061947147473614772247758491718層3061947147473614772247758491719層30619471474736147722477584917110層30619471474736147722477584917111層328186041360260606086139963719總負荷329922536956538895542492543651559514時間樓層14:0015:0016:0017:0018:001層56831571375611656712549912層47767485394890348400462323層30619471474736147722477584層30619471474736147722477585層30619471474736147722477586層30619471474736147722477587層30619471474736147722477588層30619471474736147722477589層306194714747361477224775810層306194714747361477224775811層6625468348702827147970791總負荷575884584496587997584927560798W/m2一.圍護結(jié)構(gòu)基本耗熱量：（2-7）式中：QJ——圍K——A————tw————的保溫性能以及透氣狀況。二.表2-3圍護結(jié)構(gòu)的修正率項目朝向修正率北、東北、西北朝向東、西朝向－％東南、西南朝向－％～－％南向－％～－％三.W/m2§2.4新風負荷(2-10)式中：Gwn——gwm3/h。表4-3各房間新風量計算房間號人員單位新風人員新風量新風量n（個）101625150165102625150150103425100225104625150162105625150150服務大廳6415960960門廳502010001000接待室222555055020122550114202225506120342510010020462515015920582520020020682520020020762515018420822550102娛樂室5015750750會議室150157507503012255011430222550613034251001003046251501503056251501503066251502003074251001003083025750750309425100100310625150184311625150150312625150157313225501021101425100186110242510013811038252002151104425100153110582520021311068252002131107825200283110822550186棋牌室2030600744會議室24515675675乒乓球室30257507503.1.1空調(diào)系統(tǒng)的劃分原則(1)空調(diào)管路系統(tǒng)的劃分原則見表3-1。表3-1空調(diào)管路系統(tǒng)的劃分原則序號依據(jù)劃分原則1負荷特性根據(jù)建筑不同的朝向劃分不同的環(huán)路根據(jù)內(nèi)區(qū)與外區(qū)負荷劃分不同的環(huán)路根據(jù)室內(nèi)熱濕比大小，將相同或接近的房間劃分為一個系統(tǒng)或環(huán)路2使用功能按房間的功能、用途、性質(zhì)，將基本相同的者劃分為一個區(qū)域或組成一個系統(tǒng)按使用時間的不同進行劃分，將使用時間相同或相近的房間劃分為一個系統(tǒng)或環(huán)路3空調(diào)房間的布置根據(jù)平面位置的不同進行分區(qū)設置4建筑層數(shù)在高層建筑中，根據(jù)設備、管路、附件等的承壓能力，水系統(tǒng)按豎向分區(qū)，以減少系統(tǒng)內(nèi)的設備承壓為了使用靈活，也可按豎向?qū)⑷舾蓪咏M合成一個系統(tǒng)，分別設置管路系統(tǒng)高層建筑中，通常在公共部分與標準層之間設置轉(zhuǎn)化層；因此，設計中空調(diào)管路系統(tǒng)也常以轉(zhuǎn)化層進行豎向分區(qū)各房間之間不會互相污染；=6\*GB3⑥=7\*GB3⑦ 1、（1）℃℃kJ/kgQ=13224WM=1.78g圖3-1全空氣一次回風系統(tǒng)焓濕圖（夏季）=1\*GB3①計算熱濕比kJ/kg在h-d圖上根據(jù)室內(nèi)℃及相對濕度確定N點，得kJ/kg，g/s,過N點作kJ/kg線與相對濕度線相交得送風狀態(tài)點O；kJ/kg，g/kg，℃=2\*GB3②總送風量kg/s=3702m3/h新風量：Gw=64×15=960m3=3\*GB3③混合點M的確定>10%Gw=960m3kJ/kg作的等焓線，交線為C點，得g/sKW（2）℃kJ/kg：WM=1.78g/s圖3-2全空氣一次回風系統(tǒng)焓濕圖（冬季）=1\*GB3①計算熱濕比kJ/kg=2\*GB3②確定送風狀態(tài)點oC,確定點，得kJ/kg,g/kg；再根據(jù)冬季空調(diào)室外計算溫度tw=-6oC，冬季空調(diào)室外相對濕度，確定出。然后連接和。冬季的送風量按夏季的選取：kg/skJ/kgg/kg=3\*GB3③檢查是否需要預熱因為不處于霧區(qū)，所以不需要進行預熱。過點作等d線與等溫線交于點，連接、點。2、風機盤管加新風以101辦公室為例進行計算:（1）夏季：℃℃kJ/kg冷負荷Q=4207W濕負荷：M=0.167g圖3-3風機盤管加新風系統(tǒng)焓濕圖（夏季）=1\*GB3①計算熱濕比kJ/kg℃及相對濕度確定N點，得kJ/kg，g/s,過N點作kJ/kg線與相對濕kJ/kg,kg/s=1503m3/hGw=6×25=150m3＜10%Gw=G×10%=1650×10%=165m3kg/skj/kg=4\*GB3④KW§3.3.1冷凍水系統(tǒng)§3.3.2冷卻水系統(tǒng)=2\*GB3②表4-1風機盤管選型表房間個數(shù)101FP-102102FP-82103FP-103104FP-102105FP-7.12201FP-12.51202FP-7.11203FP-6.32204FP-102205FP-7.12206FP-7.12207FP-102208FP-12.51娛樂室FP-84會議室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會議室2FP-104乒乓球室FP-1042表4-4新風機組選型表4-5新風機組的參數(shù)150025004000260480320812201525421.52.34.681219＜＜＜148192232進出管徑DN30DN30DN40長92013601980寬115011501200高590590590房間編號送風量冷負荷新冷負荷冷負荷之和總風量總負荷m3/hkwkwkwm3/hkw一層服務大廳4662146229.814632466214632一層門廳45531267310.212683910024188一層接待室4547114995.611505表4-8空調(diào)機組的性能參數(shù)產(chǎn)品型號KD(X)-5KD(X)-10風量500010000冷量25.284.6供冷進風干球溫度2727供冷進風濕球溫度19.519.5供熱進風濕球溫度77冷水進口溫度77熱水進口溫度6060機外全壓（6排）KPa246406水流量6.513.5水阻力KPa13.916.7風機型式直聯(lián)外轉(zhuǎn)子離心風機功率0.55*21.5*2壓力（Pa）611611臺數(shù)22換熱盤管性能迎風面積（m2）0.470.97換熱面積（m2）37.949.2表冷器排數(shù)6外形尺寸長（mm）16802130寬（mm）11051305高（mm）500680噪聲dB（A）6266(4-2)（4-3）型號LSBLG400A制冷量KW401輸入功率KW88額定電流A153能量控制25%～100%制冷劑R134a壓縮機型式進口半封閉式螺桿式壓縮機數(shù)量臺1蒸發(fā)器型式殼管式換熱器水流量m3/h69水阻力KPa39進/出溫度12/7管徑mmDN125冷凝器型式殼管式換熱器水流量m3/h90水阻力KPa40進/出溫度30/35管徑mmDN125尺寸長mm3400寬mm1300高mm1660機組重量Kg1820噪聲dB（A）75人風量與Ev也0.51圖5-1風機盤管側(cè)送風示意圖其他房間散流器見附錄六一層門廳和接待室風管布置圖，則實際。取標準規(guī)格斷面尺寸，故實際流速。當量直徑按流速當量直徑Dv=630mm及實際流速，查通風管道單位長度摩擦阻力線算圖并進行粗糙度修正后的，該管道的摩擦阻力為：查得多葉調(diào)節(jié)閥：漸縮管：總的局部阻力系數(shù)為：局部阻力按下式計算:管段3-4的阻力：同理可計算出其它管道的摩擦阻力和局部阻力，具體結(jié)果見表6-1。表6-1管道的摩擦阻力和局部阻力管段編號風量m3/h風量m3/s初選風速m/s初選面積m-2管長風道amm風道bmm當量直徑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管段編號實際流速m/s比摩阻Rm沿程阻力Pa動壓Pa局部阻力名稱局部阻力系數(shù)總阻力系數(shù)ξ局部阻力Pa總阻力Pa0-13.270.110.116.42新風百葉漸縮管閥門0.90.820.522.2414.414.492-35.150.5410.0015.92分流三通漸縮管調(diào)節(jié)閥0.090.10.520.7111.3121.313-105.240.441.4716.5漸縮管直流三通0.10.320.426.938.4010-165.120.462.4115.7漸縮管散流器彎頭0.110.291.3921.924.2916-174.100.311.2310漸縮管散流器0.111.1111217-183.930.301.209.3漸縮管散流器0.111.110.211.4118-193.280.281.116.45漸縮管散流器0.111.17.098.2119-203.280.441.746.45漸縮管散流器0.111.17.098.833-43.950.330.679.37噴口漸縮管側(cè)口出流1.050.1-0.031.1210.511.164-54.180.310.8510.5噴口漸縮管側(cè)口出流1.050.1-0.031.1211.812.605-64.220.300.8010.7噴口漸縮管側(cè)口出流1.050.1-0.031.1211.912.746-73.950.280.759.37噴口漸縮管側(cè)口出流1.050.1-0.041.1110.411.157-84.120.330.8910.2噴口漸縮管側(cè)口出流1.050.1-0.051.111.212.068-93.370.391.066.81噴口漸縮管側(cè)口出流1.050.1-0.031.127.638.69與管段3-20并聯(lián)，故不平衡率為：因為，＜15%滿足要求同理可得出一層其它環(huán)路的風管的規(guī)格見表6-2風管的規(guī)格。表6-2風管的規(guī)格管段編號風量m3/h風量m3/s初選風速m/s初選面積m-2管長m風道amm風道bmm當量直徑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進行編號，1-2-4最有利環(huán)路為5-9-10-11-12。支管為：a、b、c、d、e、f、g、h、i根據(jù)各管道的分量及選定的流速，確定最不利管路各管段的斷面尺寸及沿程阻力和局部阻力如下。管段1—2摩擦阻力計算如下。取管內(nèi)流速，則實際。取標準規(guī)格斷面尺寸，故實際流速。當量直徑Dv=320mm，，。00時查得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編號風量m3/h風量m3/s初選風速m/s初選面積管長m風道amm風道bmm當量直徑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管段編號實際流速m/s比摩比摩阻Rm沿程阻力Pa動壓Pa局部阻力名稱阻力系數(shù)總局部阻力系數(shù)局部阻力Pa總阻力Pa1-21.560.674.031.46調(diào)節(jié)閥彎頭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分流三通漸縮管0.240.10.342.406.594-53.611.3135.247.82分流三通彎頭漸縮管0.040.290.10.433.3638.65-65.921.506.0021.00分叉三通彎頭漸縮管0.3040.3320.11.1423.9429.95a1.560.581.161.46調(diào)節(jié)閥彎頭0.520.470.991.452.61b1.090.440.870.71調(diào)節(jié)閥彎頭0.520.470.990.701.57C1.090.440.870.71調(diào)節(jié)閥彎頭0.520.470.990.701.57表6-4管路的風管的規(guī)格管段編號風量m3/h風量m3/s初選風速m/s初選面積管長m風道amm風道bmm當量直徑mm實際流速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管段編號比摩比摩阻Rm沿程阻力Pa動壓Pa局部阻力名稱阻力系數(shù)總局部阻力系數(shù)局部阻力Pa總阻力Pa12-110.724.323.14分流三通0.2420.481.505.8211-100.823.297.98分流三通漸縮管0.2420.10.584.637.9110-90.993.9511.12分流三通漸縮管0.2420.10.586.4510.409-50.746.685.40分流三通彎頭漸縮管0.240.290.10.633.4010.09e0.581.161.26調(diào)節(jié)閥彎頭0.520.470.991.242.40f0.581.161.52調(diào)節(jié)閥彎頭0.520.470.991.502.67g0.581.161.26調(diào)節(jié)閥彎頭0.520.470.991.242.40h0.581.161.52調(diào)節(jié)閥彎頭0.520.470.991.502.67i0.581.161.26調(diào)節(jié)閥彎頭0.520.470.991.242.40j0.581.161.26調(diào)節(jié)閥彎頭0.520.470.991.242.40n0.581.161.26調(diào)節(jié)閥彎頭0.520.470.991.242.40，＞15%表6-5各層水流量表樓層水流量（kg/h）水流量（m3/h）1F3441834.422F2000920.013F2260822.614F2260822.615F2260822.616F2260822.617F2260822.618F2260822.619F2260822.6110F2260822.6111F3396433.96總流量69255269.26圖6-3最不利環(huán)路水力計算圖表6-6最不利環(huán)路水力計算705.02.042.0610661表6-7最有利環(huán)路水力計算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匯總信息如下表6-11。表6-11匯總信息表項目環(huán)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.空供圖8-1集水器和分水器的構(gòu)造圖根據(jù)《中央空調(diào)設備選型手冊》P650，分水器和集水器尺寸確定可筒體直徑D（mm）封頭高度h（mm）排污管規(guī)格dp（mm）疏水管規(guī)格ds（mm）3771195025DBNL3-100圓形型號高mm直徑mm進水管DBNL3-10035533732出水管排污管補水管§8.3膨脹水箱的選擇圖8-2膨脹水箱構(gòu)造圖VcQ（8-1）式中：V——Vc——第171Vc=31.2L/kw；Q——V=0.015×31.2×587.997=275.18L水箱形式水箱型號公稱容積有效容積外形尺寸高（㎡）（m3）長寬（mm）mm方形10.50.61900900900水箱配管的公稱直徑DN/mm水箱自重溢流管排水管膨脹管信號管循環(huán)管kg4032252020156.3§8.3水泵的選擇§8.3.1=1.1。69×2×1.1=75.9H=·Hmax（8-2）式中：mH2O；=1.1。系統(tǒng)總阻力43.8KPa末端放氣閥阻力：40KPa蒸發(fā)器阻力39KPa集水器和分水器的阻力約為45kpa。末端放氣閥阻力：40KPaH=1.1×（4.38+3.9+4.5+4）=18.45mH2O型號流量揚程轉(zhuǎn)速效率汽蝕余量m3/smr/min%mSYL80-125A100202900724.5功率（kw