某公司办公楼空调及冷热源工程设计VIP免费

第1页共37页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共37页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/㎡℃(夏)，h=18.56w/㎡℃（冬）内表面h=8.72w/㎡℃冬季：室内18℃，40%室外2℃，82%夏季：室内26℃，60%室外36.5℃（干）27.3℃（湿）北外墙Fb=3.9×3.3-1.5×1.5=10.62㎡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）=0.657w/㎡℃Qb=KF(tn-tw)a=112.15W北外窗Fbc=1.5×1.5=2.25㎡Kbc=3.5w/㎡℃故Qbc=KbcFbc(tn-tw)a=126W冷风渗透耗热量（采用换气次数法）Vn=（3.9-0.125）×3.1×4.6=53.8m3,nk=1/4,ρw=1.34,cp=1Qbc‵=0.278×1/4×53.8×1×1.34×(18-2)=80.2W南内墙Fn=3.3×3.9-0.9×2.1=10.98㎡Kn=1/(1/8.92+0.02/0.93+0.2/0.54+0.02/0.93+1/8.72)=1.56取a=0.7Qn=1.56－10.98－16－0.7=191.8W屋面Fm=16.17㎡,K=0.649Qw=0.649×16.17×16=167.94W冬季总热负荷Q1=Qb+Qbc+Qbc‵+Qn=678.09W（2）冷负荷已知屋面逐时温差第2页共37页第1页共37页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共37页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0:301:302:303:304:305:306:307:30555566678:309:3010:3011:3012:3013:3014:3015:3088991010101016:3017:3018:3019:3020:3021:3022:3023:30109987766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+0.02/0.93+0.1/1.94+0.02/0.93+1/8.72)=0.654F=16.17㎡屋面逐时冷负荷Qwl0:301:302:303:304:305:306:307:30190.35190.35179.78169.2158.63148.05137.48126.98:309:3010:3011:3012:3013:3014:3015:30116.33105.75105.75105.75105.75116.33126.9148.0516:3017:3018:3019:3020:3021:3022:3023:30158.63169.2190.35200.93200.93200.93200.93200.93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㎡外墙逐时冷负荷Qql0:301:302:303:304:305:306:307:3063.1856.1856.1649.1449.1442.1242.1235.18:309:3010:3011:3012:3013:3014:3015:30第3页共37页第2页共37页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第3页共37页35.135.142.1242.1242.1249.1456.1656.1616:3017:3018:3019:3020:3021:3022:3023:3063.1863.1870.270.270.270.270.263.18外窗K=3.5，F=2.25㎡外窗逐时传热冷负荷Qcc0:301:302:303:304:305:306:307:3039.3831.531.531.523.6324.427.5633.088:309:3010:3011:3012:3013:3014:3015:3039.3842.2653.5659.8664.5868.5270.8871.6716:3017:3018:3019:3020:3021:3022:3023:3070.145.6862.2256.7151.1946.4741.7437.8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Jz0:301:302:303:304:305:306:307:30171412109651718:309:3010:3011:3012:3013:3014:3015:30759110511512112412311716:3017:3018:3019:3020:3021:3022:3023:30107106964736302420外窗逐时日射冷负荷Qcs0:301:302:303:304:305:306:307:3010.498.997.496.744.4938.2153.256.198:309:3010:3011:3012:3013:3014:3015:3068.1878.6786.1690.6692.9192.1687.6680.1716:3017:3018:3019:3020:3021:3022:3023:3079.4271.9335.2126.9722.4817.9814.9612.74南内墙F=10.98㎡㎡，K=1.56，twp=32.5，tls=1,tn=26Q=1.56×10.98×(32.5+1-26)=128.47W照明散热（取一盏36W荧光灯，镇流器4W）Qd=100n1n2p=1.2×0.6×40=28.8W人体散热n=2,n’=0.93,q=134W/人Qr=nn’q=249.24W人体冷负荷系数第4页共37页第3页共37页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第4页共37页18:3019:3020:3021:3022:3023:300.510.70.760.80.80.830:...