精品[精品]00广州市某商业楼空调设计说明书-BY AWV.doc

2011精品一、 工程概况本建筑是一栋4层高的办公楼，地点在广州市。广州位于东经113.32，北纬23.13。广州地处北亚热带，北回归线穿越北部，属北亚热带典型的海洋季风气候。这里夏无酷暑，冬无严寒，雨量充沛四季如春，繁花似锦。全年平均气温2022摄氏度，平均相对湿度77。市区年降雨量为1982.7毫米。该建筑物相关资料：（1) 工程地点：广州。（2) 建筑布置：建筑平面图及立、剖面图见电子文件。（3）围护结构的构造： 外墙：采用教材1附录6,表1序号3中的型，传热系数； 内墙：180mm砖墙，两面20mm厚1:3水泥砂浆抹灰，传热系数； 楼板：钢筋混凝土楼板，水泥砂浆找平压光，传热系数； 窗：铝合金窗，挂浅色内窗帘； 门：木门。 屋面：采用教附录2-4，表2序号1沥青膨胀珍珠岩保温层中的型，传热系数；（4）室内、外设计参数：空调室外设计参数查阅有关的设计规范和手册；室内设计参数如下表：空调室内设计参数房间名称干球温度（）相对湿度（%）噪声级dB（A）新风指标m3/（h人）夏季夏季办公2527655025（无吸烟）（5）室内设计人数等参数 办公室按0.2人/计算人体的热湿负荷；照明负荷近似取10W/；计算机等电子设备的负荷近似取10W/ 工作时间：8:0017:00。（7）冷热源（不用设计，假设已经给定）：冷源为712的冷水；城市热网提供110的高温水。二、 设计方案由于本次设计的建筑地广州，夏热冬暖，所以将采取只供冷不供热的做法。对本建筑的办公区全部采用全空气系统，全部由处理过的空气负担室内空调冷负荷和湿负荷。三、 负荷计算3.1底层负荷计算3.1.1室102负荷计算由工程图可知102，112,114办公室的工况相同。办公室尺寸如工程图为V5.7m*3.6m*4.2m，窗尺寸为S=2.4m*2.1m.广州市夏季空调室外计算干球温度为33.5，湿球温度为27.7. 办公室夏季空调室内计算干球温度为27，室内相对湿度65%。1) 北外墙冷负荷外墙采用：面积约为20.52。采用教材1附录6,表1序号3中的型，传热系；由教材1 附录6查得型外墙冷负荷计算温度，即算出逐时冷负荷，计算结果列于附表1.1中；附表1.1：102室北外墙冷负荷时间891011121314151617t L,r32.332.131.831.631.431.331.231.231.331.4 td1.7tl3433.833.533.333.13332.932.93333.1t l,r-tn76.86.56.36.165.95.966.1k0.9F10.08QL,r63.561.695957.255.354.4353.553.554.455.32) 北外窗瞬时传热冷负荷窗：面积约为5.04。铝合金窗；挂浅色内窗帘；根据=8.72W/（），=18.6W/（K），由附录6中7查得=3.01W/（K）。再由附录6中8查得玻璃窗地点修正值，金属框双层窗应乘1.2的修正系数=1.2x3.01=3.61 W/（K），计算结果列于附表1.2中；附表1.2：102室北外窗温差引起的冷负荷时间891011121314151617t L,r26.927.92929.930.831.531.932.232.232 td1tl,r27.928.93030.931.832.532.933.233.233t l,r-tn0.91.933.94.85.55.96.26.26k3.61F5.04QL,r16.3734.5754.67187.3100.11071131131093) 透过玻璃窗进入日射得热引起冷负荷由表2.8中查得双层玻璃钢窗有效面积系数=0.75，故窗的有效面积=5.040.75=3.78。由表2.9中查得窗玻璃的遮阳系数=0.86，由表2.10中查得窗内遮阳设施的遮阳系数=0.6。由表2.7中查得纬度25时（广州市处于北纬2308），北向日射得热因数最大值=146W/。因广州市处于北纬2730以南，属南区，故由附录6中12查得南区有内遮阳的玻璃窗冷负荷系数逐时值。计算逐时进入玻璃窗日射得热引起的冷负荷，计算结果列于附表1.3中；附表1.3：102室北外窗日射得热引起的冷负荷时间891011121314151617C L,r0.70.720.770.820.850.840.810.780.770.75F3.78Cs0.86Cn0.6Dj,max146QL,r199.3205219234242239.22312222192144) 人员散热形成的冷负荷办公区属于轻度劳动。当室温为27时，查表2.11成年男子每人散发的显热和潜热量为57W和77W，群集系数Cn=0.96。办公室按0.2人/计算人体的热湿负荷，即为4人。所以Qs=0.96*57*4219W; Qr=0.96*77*4296W;由附录7中4查得人体显热散热冷负荷系数逐时值。计算人体显热引起的冷负荷，计算人体散湿引起的冷负荷，计算结果列于计算说明后的附表1.4中；附表1.4：102室人体散热引起的冷负荷时间891011121314151617CL,r0.050.520.620.680.730.770.80.830.850.63Qs219Qs*CL,r10.95113.9136149160168.6175182186138Qr296QL,r307409.9432445456464.64714784824345) 内墙散热形成的冷负荷广州市夏季空调室外计算日平均温度30.1，2，=30.1+2=32.1；内墙传热系数，面积内墙瞬时传热的冷负荷,面积约为37.06。计算结果列于附表1.5中； 附表1.5：102室内墙散热形成的冷负荷时间891011121314151617twp30.1tls2tn27K2.01F37.06QL,r379.96) 木门冷负荷广州市夏季空调室外计算日平均温度30.1，2，=30.1+2=32.1；木门传热系数，木门面积F=2*12；木门瞬时传热的冷负荷3.352(32.1-27)= 34.27) 照明散热形成的冷负荷办公区面积约为20.52，而照明负荷取10 W/。故照明设备所需Q=20.5210 W/=205.2 W。8) 电子设备冷负荷面积约为20.52，而计算机电子设备冷负荷取10 W/，故设备所需Q=20.5210 W/=205.2 W。附表1.6： 102室各项负荷汇总 单位：W时间891011121314151617北外墙63.561.75957.255.354.453.553.554.455.3北窗传热16.434.654.67187.3100107113113109北窗日射199205219234242239231222219214人体307410432445456465471478482434内墙380内门34.2照明负荷205计算机205总冷负荷1411153615891631166516831687169116931637最大值1693由上表可以看出此办公区的最大冷负荷值出现在13：00时值为1683W.此即为空调房间的夏季室内设计冷负荷。新风量Gw=25m3/（h人）x 4人=100 m3/h=0.028 m3/s=0.028*1.2=0.033 kg/s查表2.11得成年男子散湿量W=184g/h,n=4人。W=wn=184x4/3600=0.204g/s3.1.2第一层其余房间负荷计算其余房间计算方法类似：附表一： 底层冷负荷汇总 单位：W时间891011121314151617最大值10214111536158916311665168316871691169316371693103133314881553160116541665164916391611151716651042323257326802763283128672876288328882774288810510881242130713561409141914041394136612711419106113412591313135413881406141114141417136014171072161239625492652274628412850281927852619285010821842497262727282836286028292807274925562860109149217201795185018951922193319431949184519491102148245725862684279028102779275927032514281011110881242130713561409141914041394136612711419112141115361589163116651683168716911693163716931131364151915841632168516961680167016421547169611414111536158916311665168316871691169316371693115113412591313135413881406141114141417136014171161134125913131354138814061411141414171360141711730983419353636253700374537643783379836553798118240727162845294330493069303830182963277330691191088124213071356140914191404139413661271141912030103389353036323744377037473737369034713770汇总3241936284379103913540318407694065040555402043807540769由上表可以看出此办公区的最大冷负荷值出现在13：00时值为40769W.此即为空调房间的夏季室内设计冷负荷。共有n=110人新风量Gw=25m3/（h人）x 110人=2750 m3/h=0.764 m3/s=0.028*1.2=0.917 kg/s查表2.11得成年男子散湿量W=184g/h,n=110人。W=wn=184x110/3600=5.622g/s3.2第二，三层负荷计算各房间负荷计算方法与第一层类似附表二：第二层冷负荷汇总 单位：W时间891011121314151617最大值2021359148415361577161116291634163816411584164120312991454151915681622163216171607157914841632204113112561308134913831401140614101413135714132051058121312781327138013911375136513371242139120611311256130813491383140114061410141313571413207107112261291134013941404138913791351125614042082255250526102692275927952806281428192707281920910581213127813271380139113751365133712421391210113112561308134913831401140614101413135714132112128243825682666277327942763274326872497279421236144027418042914410444044164402435041114440213107112261291134013941404138913791351125614042142483273328382920298730233033304230472935304721513591484153615771611162916341638164115841641216113112561308134913831401140614101413135714132171131125613081349138314011406141014131357141321824832733283829202987302330333042304729353047219212824382568266627732794276327432687249727942201071122612911340139414041389137913511256140422123642674280429023009303029992979292327333030汇总3245636351379673919940397407874064640566402113810140787由上表可以看出此办公区的最大冷负荷值出现在13：00时值为40787 W.此即为空调房间的夏季室内设计冷负荷。共有n=112人新风量Gw=25m3/（h人）x 112人=2800 m3/h=0.778 m3/s=0.778*1.2=0.933 kg/s查表2.11得成年男子散湿量W=184g/h,n=112人。W=wn=184x112/3600=5.724g/s附表三：第三层冷负荷汇总 单位：W时间891011121314151617最大值3011359148415361577161116291634163816411584164130211311256130813491383140114061410141313571413303113112561308134913831401140614101413135714133041131125613081349138314011406141014131357141330511171242129513361369138713921397139913431399306113112561308134913831401140614101413135714133071131125613081349138314011406141014131357141330813451470152215631597161516201624162715711627309135914841536157716111629163416381641158416413101131125613081349138314011406141014131357141331111311256130813491383140114061410141313571413312248327332838292029873023303330423047293530473130314129914541519156816221632161716071579148416323151071122612911340139414041389137913511256140431610711226129113401394140413891379135112561404317107112261291134013941404138913791351125614043181058121312781327138013911375136513371242139131910711226129113401394140413891379135112561404320107112261291134013941404138913791351125614043211058121312781327138013911375136513371242139132221202430256126602767278827582738268124912788323212824382568266627732794276327432687249727943241071122612911340139414041389137913511256140432523642674280429023009303029992979292327333030汇总3203335980376393890840149405394037740282398943773840539由上表可以看出此办公区的最大冷负荷值出现在13：00时值为40539 W.此即为空调房间的夏季室内设计冷负荷。共有n=112人新风量Gw=25m3/（h人）x 112人=2800 m3/h=0.778 m3/s=0.778*1.2=0.933 kg/s查表2.11得成年男子散湿量W=184g/h,n=112人。W=wn=184x112/3600=5.724g/s3.3第四层负荷计算窗户尺寸为S 3.6 m * 2.137 m;房间高度为h= 3.9 m;门的尺寸主要为S=2 m*1m;附表四：第四层冷负荷汇总 单位：W时间891011121314151617最大值40113621487154015821616163416391643164615901646402113412591312135413881406141114161418136214184031120124612991340137413931398140214041348140440411341259131213541388140614111416141813621418405112012461299134013741393139814021404134814044061134125913121354138814061411141614181362141840711341259131213541388140614111416141813621418408134814731527156816021620162616301632157616324091690181518681910194419621967197119741918197441011341259131213541388140614111416141813621418411113412591312135413881406141114161418136214184122433267327742853292129612980299830132910301341316311777183318731919192219001884185317571922414107412291295134513991410139413841355125914104151074122912951345139914101394138413551259141041610741229129513451399141013941384135512591410417107412291295134513991410139413841355125914104181060121612821332138613961381137013421246139641910741229129513451399141013941384135512591410420213224442576267527842805277427532695239428054212218253026622763287128932862284127832481289342210741229129513451399141013941384135512591410423107412291295134513991410139413841355125914104241074122912951345139914101394138413551259141042523122614274028362944296929462935288825962969汇总3450238742405324190943267437044353343444430214036143704由上表可以看出此办公区的最大冷负荷值出现在13：00时值为43704 W.此即为空调房间的夏季室内设计冷负荷。共有n=116人新风量Gw=25m3/（h人）x 116人=2900 m3/h=0.806 m3/s=0.778*1.2=0.967 kg/s查表2.11得成年男子散湿量W=184g/h,n=116人。W=wn=184x116/3600=5.929g/s3.4第五层房间负荷计算3.4.1屋顶引起的冷负荷采用教附录2-4，表2序号1沥青膨胀珍珠岩保温层中的型，传热系数；t l，r:查教材附录6中4中II型屋顶8-17时的瞬时冷负荷计算温度.td:查教材附录6中5.t l，r=( t l，r-tn)*k1*k2; k1=1.0,k2=1.0tn=27.冷负荷计算公式: Q=K*F*( t l-tn)3.4.2西外墙冷负荷采用教材1附录6,表1序号3中的II型,传热系数K=0.9)t l，r:查教材附录6中3中II型外墙817时的瞬时冷负荷计算温度.td:查教材附录6中5.t l，r=( tL1+ td)*k1*k2; k1=1.0,k2=1.0tn=27.冷负荷计算公式: Q=K*F*( t l-tn)3.4.3楼板引起的冷负荷计算公式:Q=K*F*(tls-tn)=3.13*F*(32.1-27) W3.4.4其余各项的冷负荷其余各项的冷负荷计算方法与以上各层类似。附表五：第五层冷负荷汇总 单位：W时间891011121314151617最大值5001390152515721606165016551641163516191538165550114931610165616941728174917611776179117491791502117113171374141914721486147814791464138414865036248687171057286750475657545756475217191756550495701042010701109361126511392114441158511657113041165750533373618371137883897393839554003402739114027506149316101656169417281749176117761791174917915072727295930523128319632383262329133233238332350826422863294730173084313031643205324831753248509136515001551159116451662166316751671160116755101171131713741419147214861478147914641384148651111711317137414191472148614781479146413841486512232726182734282429302956294129432914275229565132226251926362727283328602844284528142650286051411711317137414191472148614781479146413841486汇总3950243381448184596847348478384789548214482334639348233由上表可以看出此办公区的最大冷负荷值出现在16：00时值为48233 W.此即为空调房间的夏季室内设计冷负荷。共有n=124人新风量Gw=25m3/（h人）x124人=3100 m3/h=0.861m3/s=0.861*1.2=1.033 kg/s查表2.11得成年男子散湿量W=184g/h,n=124人。W=wn=184x124/3600=6.34g/s3.5 冷负荷，湿负荷,新风量汇总 办公楼各空调区最大冷负荷，湿负荷汇总如下表：附表六第一层空调区最大冷负荷，湿负荷,新风量汇总空调房间冷负荷最大值 Q (w)面 积 (m2)人 数 （人）湿负荷W (kg/h)热湿比(kJ/kg)新风量Gw (kg/h)102169320.5240.78281120103166520.5240.78144120104288841.0481.57062240105141920.5240.76941120106141720.5240.76929120107285041.0481.56970240108286041.0481.56995240109194920.5240.79535120110281041.0481.56872240111141920.5240.76941120112169320.5240.78281120113169620.5240.78296120114169320.5240.78281120115141720.5240.76929120116141720.5240.76929120117379856.431126755330118306941.0481.57506240119141920.5240.76941120120377056.431126706330汇总40769564.31102072513300附表七第二层空调区最大冷负荷，湿负荷,新风量汇总空调房间冷负荷最大值 Q (w)面 积 (m2)人 数 （人）湿负荷W (kg/h)热湿比(kJ/kg)新风量Gw (kg/h)202164120.5240.78025120203163220.5240.77983120204141320.5240.76910120205139120.5240.76804120206141320.5240.76910120207140420.5240.76867120208281941.0481.56895240209139120.5240.76804120210141320.5240.76910120211279441.0481.56833240212444059.28122.27239360213140420.5240.76867120214304741.0481.57452240215164120.5240.78025120216141320.5240.76910120217141320.5240.76910120218304741.0481.57452240219279441.0481.56833240220140420.5240.76867120221303041.0481.57410240汇总40787572.31122171253360附表八第三层空调区最大冷负荷，湿负荷,新风量汇总空调房间冷负荷最大值 Q (w)面 积 (m2)人 数 （人）湿负荷W (kg/h)热湿比(kJ/kg)新风量Gw (kg/h)301164120.5240.78025120302141320.5240.76910120303141320.5240.76910120304141320.5240.76910120305139920.5240.76844120306141320.5240.76910120307141320.5240.76910120308162720.5240.77958120309164120.5240.78025120310141320.5240.76910120311141320.5240.76910120312304741.0481.574522403130314163220.5240.77983120315140420.5240.76867120316140420.5240.76867120317140420.5240.76867120318139120.5240.76804120319140420.5240.76867120320140420.5240.76867120321139120.5240.76804120322278838.7681.56818240323279441.0481.56833240324140420.5240.76867120325303041.0481.57410240汇总40539572.31122170823360附表九第四层空调区最大冷负荷，湿负荷,新风量汇总空调房间冷负荷最大值 Q (w)面 积 (m2)人 数 （人）湿负荷W (kg/h)热湿比(kJ/kg)新风量Gw (kg/h)401164620.5240.78051120402141820.5240.76936120403140420.5240.76869120404141820.5240.76936120405140420.5240.76869120406141820.5240.76936120407141820.5240.76936120408163220.5240.77984120409197420.5240.79655120410141820.5240.76936120411141820.5240.76936120412301341.0481.57369240413192220.5240.79401120414141020.5240.76897120415141020.5240.76897120416141020.5240.76897120417141020.5240.76897120418139620.5240.76828120419141020.5240.76897120420280541.0481.56860240421289338.7681.57075240422141020.5240.76897120423141020.5240.76897120424141020.5240.76897120425296941.0481.57261240汇总42665592.81162171963480附表十第五层空调区最大冷负荷，湿负荷,新风量汇总空调房间冷负荷最大值 Q (w)面 积 (m2)人 数 （人）湿负荷W (kg/h)热湿比(kJ/kg)新风量Gw (kg/h)500165520.5240.78095120501179120.5240.78762120502148620.5240.77268120503756599.36203.7740060050411657149305.57602900505402749.68101.87879300506179120.5240.78762120507332341.0481.58126240508324841.0481.57944240509167520.5240.78193120510148620.5240.772681205111486