公司办公楼空调及冷热源工程设计

1、重庆市某公司办公楼空调及冷热源工程设计讲明书空调设计1. 办公楼空调负荷计算（以三楼 15 号房为例）（1）热负荷已知参数：外表面 h=23.26w/ m2C （夏）,h=18.56 w/ m2C（冬） 内表面 h=8.72 w/ me冬季：室内18C, 40%室外2C, 82%夏季：室内26C, 60%室外36.5 C （干）27.3 C （湿）北外墙Fb =3.9 X 3.3 -1.5 X 1.5=10.62 m=1/Kb1/18.56+0.02/0.93+0.04/0.04+0.02/0.93+0.2/0.69+0.02/0.93+1/8.7）=0.657 w/ meQb =KF（tn-

2、tw）a=112.15W北外窗Fbc =1.5X 1.5=2.25 m K bc =3.5 w/ me故 Qbc = K bc F bc （tn-tw）a=126W 冷风渗透耗热量（采纳换气次数法）3Vn= （3.9-0.125 ） X 3.1 X 4.6=53.8m ,nk=1/4,p w=1.34,cp=1Qc ' =0.278 X 1/4 X 53.8 X 1X 1.34 X （18-2）=80.2W南内墙Fn=3.3 X 3.9-0.9 X 2.1=10.98 m2Kn=1/(1/8.92+0.02/0.93+0.2/0.54+0.02/0.93+1/8.72)=1.56取 a

3、=0.7 Qn=1.56- 10.98 - 16-0.7=191.8W屋面Fm=16.17 m ,K=0.649 Qw=0.649 X 16.17 X 16=167.94W冬季总热负荷 Q仁Q +Qc +Qbc ' +Qn=678.09 W(2) 冷负荷已知屋面逐时温差0:301:302:303:304:305:306:307:301010M0101112148:309:3010:3011:3012:3013:3014:3015:30161819191919191816:3017:3018:3019:3020:3021:3022:30:23:301817161514131211外墙逐时

4、温差0:301:302:303:304:305:306:307:305555666:78:309:3010:3011:3012:3013:3014:3015:3088991010101016:3017:3018:30 19:3020:3021:3022:3023:30109987766外窗逐时温差0:301:302:303:304:305:306:307:30544433448:309:3010:3011:3012:3013:3014:3015:305678899:916:3017:3018:3019:3020:3021:3022:30:23:3096877655屋面K=1/(1/23.26+

5、0.02/0.93+0.05/0.04+0.02/0.93+0.1/1.94+0.02/0.93+1/8.72)=0.654F=16.17 m2屋面逐时冷负荷 Qwl0:301:302:303:304:305:306:307:30190.35190.35M79.78 1169.2158.63148.05137.48126.98:309:3010:3011:3012:3013:3014:3015:30116.33105.75105.75105.75105.75116.33126.9148.0516:3017:30；18:30 H19:3020:3021:3022:30:23:30158.6316

6、9.2190.35200.93200.93200.93200.93200.93外墙K=1/(1/23.26+0.02/0.93+0.04/0.04+0.02/0.93+0.2/0.69+0.02/0.93+1/8.92)=0.661F=10.62 m外墙逐时冷负荷 Qql0:301:302:303:304:305:306:307:3063.1856.1856.16 149.1449.1442.1242.1235.18:309:3010:3011:3012:3013:3014:3015:3035.135.142.1242.1242.1249.1456.1656.1616:3017:30M8:30

7、 19:3020:3021:3022:30:23:3063.1863.1870.270.270.270.270.263.18外窗K=3.5, F=2.25 m2外窗逐时传热冷负荷Qcc0:301:302:303:304:305:306:307:3039.3831.531.531.523.6324.427.5633.088:309:3010:3011:3012:3013:3014:3015:3039.3842.2653.5659.8664.5868.5270.8871.6716:3017:3018:3019:3020:3021:3022:3023:3070.145.6862.2256.7151.

8、1946.4741.7437.8窗户有效面积系数Xg=0.75，遮挡系数Cs=0.74,遮阳系数Cn=0.6冷负荷强度Jz0:301:302:303:304:305:306:307:30171412109651:718:309:3010:3011:3012:3013:3014:3015:30759110511512112412311716:3017:30M8:30 19:3020:3021:3022:30:23:30107106964736302420外窗逐时日射冷负荷Qcs0:301:302:303:304:305:306:307:3010.498.99:7.49 n6.744.4938.2

9、153.2:56.198:309:3010:3011:3012:3013:3014:3015:3068.1878.6786.1690.6692.9192.1687.6680.1716:3017:30M8:30 119:3020:3021:3022:3023:3079.4271.9335.2126.9722.4817.9814.9612.74南内墙F=10.98 m2m, K=1.56, twp=32.5 , tls=1,tn=26Q=1.56X 10.98 X (32.5+1 -26)=128.47W照明散热(取一盏36W荧光灯，镇流器4WQd=100n1n2p=1.2X 0.6 X 40=2

10、8.8W人体散热n=2 ,n ' =0.93,q=134W/ 人Qr=nn' q=249.24W人体冷负荷系数18:3019:3020:3021:3022:3023:300.510.70.760.8:0.8:0.830:301:302:303:304:305:306:300.860.880.90.910.930.940.48人体与照明冷负荷0:301:302:303:304:305:306:307:30150.04153.53158.77162.2616483.7450.5940.138:309:3010:3011:3012:3013:3014:3015:30124.62124

11、.62124.62124.62124.62124.62124.62124.6216:3017:30；18:30 H19:3020:3021:3022:30:23:30124.62124.62117.78150.93161.39168.37168.37144.81夏季总冷负荷0:301:302:303:304:305:306:307:30581.91569555.15547.31521.34464.34464.99432.48:309:3010:3011:3012:3013:3014:3015:30419.87500.09504.38533.19551.48558.45579.24594.691

12、6:3017:30M8:30 H19:3020:3021:3022:30:23:30609.14614.45635.26624.68648.23652.91646.4624.94(3) 人体湿负荷按照室内人数2人，n' =0.93,查表w=109W人W二nn w=202.74W人员在室内的可能性0:30-7:308:30-17:3018:30-23:3070%50%70%湿负荷0:30-7:308:30-17:3018:30-23:30141.918101.37141.918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10950