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1、重庆市某公司办公楼空调及冷热源工程设计说明书一空调设计（以三楼15号房为例）（1）热负荷已知参数：外表面h=23.26w/(夏)，h=18.56 w/（冬） 内表面h=8.72 w/ 冬季：室内18，40% 室外2，82% 夏季：室内26，60% 室外（干）（湿）北外墙Fb Kb =1/（1/18.56+0.02/0.93+0.04/0.04+0.02/0.93+0.2/0.69+0.02/0.93+1/8.72） =0.657 w/Qb 北外窗Fbc =1.51.5=2.25 K bc w/故Q bc = K bc Fbc (tn-tw)a=126W冷风渗透耗热量（采用换气次数法）Vn=（3
2、.9-0.125）4.6=3 ,nk=1/4,w=1.34,cp=1Qbc =1/41(18-2)=南内墙2.1=10.98屋面冬季总热负荷Q1= Qb +Q bc +Qbc +Qn=678.09 W（2）冷负荷已知屋面逐时温差0:301:302:303:304:305:306:307:3010101010111214158:309:3010:3011:3012:3013:3014:3015:30161819191919191816:3017:3018:3019:3020:3021:3022:3023:301817161514131211外墙逐时温差0:301:302:303:304:305:
3、306:307:30555566678:309:3010:3011:3012:3013:3014:3015:3088991010101016:3017:3018:3019:3020:3021:3022:3023:30109987766外窗逐时温差0:301:302:303:304:305:306:307:30544433448:309:3010:3011:3012:3013:3014:3015:305678899916:3017:3018:3019:3020:3021:3022:3023:3096877655屋面K=1/(1/23.26+0.02/0.93+0.05/0.04+0.02/0.9
4、3+0.1/1.94+0.02/0.93+1/8.72)F=16.17屋面逐时冷负荷Qwl0:301:302:303:304:305:306:307:308:309:3010:3011:3012:3013:3014:3015:3016:3017:3018:3019:3020:3021:3022:3023:30外墙K=93+0.04/0.04+0.02/0.93+0.2/0.69+0.02/0.93+1/8.92)F=10.62外墙逐时冷负荷Qql0:301:302:303:304:305:306:307:308:309:3010:3011:3012:3013:3014:3015:30516:3
5、017:3018:3019:3020:3021:3022:3023:30外窗K=3.5，F=2.25外窗逐时传热冷负荷Qcc0:301:302:303:304:305:306:307:308:309:3010:3011:3012:3013:3014:3015:3016:3017:3018:3019:3020:3021:3022:3023:30冷负荷强度Jz0:301:302:303:304:305:306:307:30171412109651718:309:3010:3011:3012:3013:3014:3015:30759110511512112412311716:3017:3018:30
6、19:3020:3021:3022:3023:30107106964736302420外窗逐时日射冷负荷Qcs0:301:302:303:304:305:306:307:3098:309:3010:3011:3012:3013:3014:3015:3016:3017:3018:3019:3020:3021:3022:3023:30南内墙F=10.98，K=1.56，twp=32.5，tls=1,tn=26(32照明散热（取一盏36W荧光灯，镇流器4W）人体散热n=2 ,n=0.93,q=134W/人Qr=nn人体冷负荷系数18:3019:3020:3021:3022:3023:300:301:
7、302:303:304:305:306:30人体与照明冷负荷0:301:302:303:304:305:306:307:301648:309:3010:3011:3012:3013:3014:3015:3016:3017:3018:3019:3020:3021:3022:3023:30夏季总冷负荷0:301:302:303:304:305:306:307:305698:309:3010:3011:3012:3013:3014:3015:3016:3017:3018:3019:3020:3021:3022:3023:30（3）人体湿负荷按照室内人数2人，n=0.93,查表w=109W/人W=nn
8、W人员在室内的可能性0:30-7:308:30-17:3018:30-23:3070%50%70%湿负荷0:30-7:308:30-17:3018:30-23:30可总结该房间选型所需最大计算值如下冷负荷热负荷湿负荷653678142本建筑各房间的冷热湿负荷汇总如下房间号冷负荷湿负荷热负荷一层1124922990527921012649292961二层36576109250041272264413512722644136134829216247614519582036895315637191470423881三层10950100858111171101191612104868447136531
9、4279014815637161565314267816113563567171578405600181388638421910924368982012026365621106310188022120263656231289101795（4）风量及冷量计算利用焓湿图可计算各房间的风量及冷量举例如下图所示1，2号房间4号房间10号房间根据如下公式：一次回风：送风量 G =Q/（in-i。）回风量 Gh=G-Gw新风比 m =Gw/G100%需冷量 Qo=G(ic-il)新风负荷 Qw =Gw(iw-in)风机盘管加独立新风:送风量 G =Q/（in-i。）风机盘管风量 Gf =G-Gw新风机组需冷量 Qw =Gw(iw-il)风机盘管需冷量 Qf =Gf(in-im)各房间的风量及冷量可计算汇总如下表房间号热湿比kJ/kg送风量kg/s新风量m3/h一次回风系统制冷量W一层11504819942215960新风比m送风量m3/h回风量m3/h房间号热湿比kJ/kg送风量kg/s新风量m3/h新风机组制冷量W风机盘管制冷量WN点L点二层330041205120660796081209120房间号W点L点O点新风比m送风量m3/h回风量m3/h二层34567
