北京市某旅游饭店会议室空调工程

北京市某旅游饭店会议室空调工程一工程概况：该建筑为北京市某旅游饭店裙楼的会议室，共分大小两个会议室，其余房间分别为办公室和机房。两个会议室均采用空调系统。办公室已有空调，不需再设。走廊不设空调建筑地理位置地点：北京北纬：39º48′东经：116º28′大气压力:100250Pa建筑热工特性1）层高：该房间梁下标高为4.5米。屋顶：依据屋面结构类型其屋面做法为Ⅲ型2）外墙：370毫米外抹水泥砂浆内抹白灰实心砖墙。小会议室:南墙面积为51.17㎡，北墙面积为51.17㎡，东墙面积为97.42㎡；大会议室：南墙面积为124.8㎡，北墙面积为124.8㎡。3）建筑结构：全部为混凝土框架结构，外墙均为37墙。外窗为钢窗，双层普通玻璃，内有浅绿色窗帘，内外门均为保温木门。小会议室：南窗为10.08㎡，东窗为10.08㎡，北窗为10.08㎡；大会议室：南窗为25.2㎡，东窗为0，北窗为25.2㎡。4）照明：荧光灯照明，大会议室为1500W，小会议室为600W。5）房间人数：大会议室500人，小会议室200人。夏、冬季室外设计计算参数：夏季空调室外计算干球温度:33.2℃夏季空调室外计算湿球温度:26.4℃冬季空调室外计算干球温度:-12℃冬季空调室外计算相对湿度:45%冬、夏季室外平均风速:2.35m/s夏、冬季室内要求参数：夏季：温度28℃相对湿度60%冬季：温度18℃相对湿度40%所有图表数据均查自《冷负荷专刊》二热（冷）、湿负荷的计算1夏季冷负荷计算（一）外墙冷负荷外墙为混凝土框架结构、37墙、白灰粉刷、红砖、水泥砂浆，由《冷负荷专刊》表3-1(外墙结构类型表)查的属序号2、Ⅱ型，传热系数为K=1.29千卡／小时·米²·℃，由表3-3(外墙冷负荷计算温度tl表)查得不同朝向时的tl值。按各朝向外墙面积计算出外墙逐时冷负荷。计算公式为:CL=FK(tl-tn)CL—外墙瞬变传热引起的逐时冷负荷，千卡／小时F—外墙的面积，米²K—外墙的传热系数，千卡／米²·小时·℃tn—室内设计温度℃tl—外墙的冷负荷计算温度的逐时值℃大会议室外墙冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00朝向分项南tl3534.634.233.933.533.232.932.832.933.133.433.934.4F124.8K1.29tl-tn76.66.25.95.55.24.94.84.95.15.45.96.4FK(tl-tn)1126.941062.55998.15949.85885.46837.16788.86772.76788.86821.06869.36949.851030.35北tl32.6032.3032.1031.8031.6031.4031.3031.2031.2031.3031.4031.6031.80F124.8K1.29tl-tn4.64.34.13.83.63.43.33.23.23.33.43.63.8FK(tl-tn)740.563692.266660.067611.770579.571547.373531.274515.174515.174531.274547.373579.571611.770两个朝向CL总和1867.5071754.8131658.2181561.6221465.0271384.5311320.1341287.9361304.0351352.3331416.731529.4241642.118小会议室外墙冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00朝向分项南tl3534.634.233.933.533.232.932.832.933.133.433.934.4F51.17K1.29tl-tn76.66.25.95.55.24.94.84.95.15.45.96.4FK(tl-tn)462.0651435.6614409.2577389.4549363.0512343.2484323.4456316.8446323.4456336.6474356.4502389.4549422.4595北tl32.632.332.131.831.631.431.331.231.231.331.431.631.8F51.17K1.29tl-tn4.64.34.13.83.63.43.33.23.23.33.43.63.8FK(tl-tn)303.6428283.84270.6381250.8353237.6335224.4316217.8307211.2298211.2298217.8307224.4316237.6335250.8353东tl36.43635.535.2353535.235.636.136.637.137.537.9F97.42K1.29tl-tn8.487.57.2777.27.68.18.69.19.59.9FK(tl-tn)1055.641005.37942.54904.84879.70879.70904.84955.111017.941080.781143.611193.881244.15三个朝向CL总和1821.3511724.8761622.4341545.1271480.3871447.3831446.1131483.181552.6171635.2561724.4951820.971917.446走廊冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00朝向分项南tl3534.634.233.933.533.232.932.832.933.133.433.934.4F17.46K1.29tl-tn76.66.25.95.55.24.94.84.95.15.45.96.4FK(tl-tn)157.6638148.6544139.6451132.8881123.8787117.1217110.3647108.1123110.3647114.8693121.6264132.8881144.1498北tl32.632.332.131.831.631.431.331.231.231.331.431.631.8F16.02K1.29tl-tn4.614.314.113.813.613.413.313.213.213.313.413.613.8FK(tl-tn)95.06268295.5209291.3878285.188281.0549276.9217274.8551272.7886272.7886274.8551276.9217281.0549285.188CL的总和252.7265444.1754431.0329418.0761404.9336394.0434385.2198380.9009383.1532389.7245398.5481413.9429429.3378（二）屋面冷负荷屋面根据其构造，由表3-2（屋面结构类型表）中查得这类屋面做法属Ⅲ型，K=0.83千卡／米²·小时·℃。再由表3-4（屋面冷负荷计算温度tl表）查得Ⅲ型的逐时tl值。计算公式为:CL=FK(tl-tn)CL—屋面瞬变传热引起的逐时冷负荷，千卡／小时F—屋面的面积，米²K—屋面的传热系数，千卡／米²·小时·℃tn—室内设计温度℃tl—屋面的冷负荷计算温度的逐时值℃屋面冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00房间分项大会议室tl35.534.133.132.7333435.838.140.743.546.148.349.9F630K0.83tl-tn7.56.15.14.7567.810.112.715.518.120.321.9FK(tl-tn)3921.753189.692666.792457.632614.53137.44078.625281.296640.838104.959464.4910614.8711451.51小会议室tl35.534.133.132.7333435.838.140.743.546.148.349.9F252K0.83tl-tn7.56.15.14.7567.810.112.715.518.120.321.9FK(tl-tn)1639.5091333.4681114.8661027.4261093.0061311.6081705.092207.8732776.2363388.3193956.6834437.6054787.367走廊tl35.534.133.132.7333435.838.140.743.546.148.349.9F94.5K0.83tl-tn7.56.15.14.7567.810.112.715.518.120.321.9FK(tl-tn)588.2625478.4535400.0185368.6445392.175470.61611.793792.1935996.12451215.7431419.6741592.2311717.727（三）玻璃窗瞬变传热引起的冷负荷双层普通玻璃，由表3-9（双层玻璃的K值）查得这种窗在an=7.5千卡／米²·小时·℃和aw=16千卡／米²·小时·℃时传热系数K=2.59千卡／米²·小时·℃。外窗为钢窗，由表3-10查得玻璃窗传热系数的修正值为1.2。由表3-11（玻璃窗冷负荷计算温度tl表）可查得玻璃窗的逐时冷负荷计算温度tl值。计算公式为:CL=FK(tl-tn)式中k=2.59×1.2=3.108为了计算简单把走廊外门上的玻璃和窗玻璃归在一起计算。玻璃窗瞬变传热引起的冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00房间分项大会议室tl2626.927.92929.930.831.531.932.232.23231.630.8F50.4修正后的K3.108tl-tn-2-1.1-0.111.92.83.53.94.24.243.62.8FK(tl-tn)-313.286-172.308-15.6643156.6432297.6221438.601548.2512610.9085657.9014657.9014626.5728563.9155438.601小会议室tl2626.927.92929.930.831.531.932.232.23231.630.8F30.24修正后的K3.108tl-tn-2-1.1-0.111.92.83.53.94.24.243.62.8FK(tl-tn)-187.972-103.385-9.3985993.98592178.5732263.1606328.9507366.5451394.7409394.7409375.9437338.3493263.1606走廊tl2626.927.92929.930.831.531.932.232.23231.630.8F6.48修正后的K3.108tl-tn-2-1.1-0.111.92.83.53.94.24.243.62.8FK(tl-tn)-40.2797-22.1538-2.0139820.1398438.265756.3915570.4894478.5453884.5873384.5873380.5593672.5034256.39155（四）透过玻璃进入的日射得热引起的冷负荷计算公式为：CL=F×CZ×DJ，max×CCL由表2-4查得双层钢窗的有效面积系数值Ca=0.75。计算冷负荷时，各朝向窗口面积均乘以0.75，以得出窗玻璃净面积F代入式中。所有玻璃窗均为3毫米普通玻璃由表2-2查得窗玻璃的Cs值为0.86，内有浅绿色窗帘，由表2-3查得窗内遮阳设施的遮阳系数为0.6。窗玻璃的综合遮挡系数CZ=CS×CN=0.516。因北京属于40纬度带，由表2-1查得DJ，max值，南向为260，东向为515，北向为98，西向为515（单位均为千卡／米²·小时）。北京属北区，各朝向有内遮阳的CCL值可由表2-6（北区有内遮阳窗玻璃冷负荷系数表）查得。根据所得的数据计算出结果。玻璃进入的日射得热引起的冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00房间朝向分项大会议室南CCL0.180.260.40.580.720.840.80.620.450.320.240.160.1DJ，max260F18.9CZ0.516CL456.4123659.26221014.251470.6621825.6492129.9242028.4991572.0871141.031811.3997608.5498405.6998253.5624北CCL0.540.540.650.750.810.830.830.790.710.60.610.680.17DJ，max98F18.9CZ0.516CL516.097516.097621.2279716.8014774.1455793.2602793.2602755.0308678.572573.4411582.9985649.8999162.475两个方向CL的总和972.50931175.3591635.4772187.4632599.7952923.1842821.7592327.1181819.6031384.8411191.5481055.6416.0374小会议室南CCL0.180.260.40.580.720.840.80.620.450.320.240.160.1DJ，max260F7.56CZ0.516CL182.5649263.7049405.6998588.2648730.2597851.9697811.3997628.8348456.4123324.5599243.4199162.2799101.425北CCL0.540.540.650.750.810.830.830.790.710.60.610.680.17DJ，max98F7.56CZ0.516CL206.4388206.4388248.4912286.7206309.6582317.3041317.3041302.0123271.4288229.3764233.1994259.9664.98999东CCL0.680.820.790.590.380.240.240.230.210.180.150.110.08DJ，max515F7.56CZ0.516CL1366.1161647.3751587.1061185.307763.4179482.1587482.1587462.0687421.8888361.619301.3492220.9894160.7196三个朝向的CL的和1755.122117.5192241.2972060.2921803.3361651.4321610.8621392.9161149.73915.5553777.9685643.2293327.1345走廊南CCL0.180.260.40.580.720.840.80.620.450.320.240.160.1DJ，max260F3.78CZ0.516CL91.28246131.8524202.8499294.1324365.1299425.9848405.6998314.4174228.2062162.2799121.7181.1399750.71248北CCL0.540.540.650.750.810.830.830.790.710.60.610.680.17DJ，max98F1.08CZ0.516CL29.4912629.4912635.4987440.9600844.2368945.3291645.3291643.1446238.7755432.7680633.314237.137149.284285两个朝向的CL总和120.7737161.3437238.3487335.0925409.3667471.314451.029357.562266.9817195.048155.0242118.277159.99676(五)人员散热引起的冷负荷大会议室500人，小会议室200人，属静坐类型，查表4-2，当室温为28℃时，每人散发的显热和潜热量分别为46和47千卡／小时（全热量为115千卡／小时），由于在室内工作的人员包括男子和女子，参考表4-3，取群集系数为n1=0.96。根据在室内工作的人员由上午8时至下午6时共停留10个小时（中午的两个小时午休时间也计算在内），可由表4-4（人体显热散热冷负荷系数表）查得逐时的CCL值。计算公式为：CL=QS×n1×CCL因为会议室属人员密集场所，所以取CCL=1，故各个时刻的人体散热冷负荷是固定的。而人体潜热散热引起的冷负荷则为潜热散热量乘以群集系数。人员散热引起的冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00房间分项CCL1111111111111大会议室显热负荷CL1=QS*n1*CCL22080潜热负荷CL2=QL*n122560CL1+CL244640小会议室显热负荷CL1=QS*n1*CCL8832潜热负荷CL2=QL*n19024CL1+CL217856（六）照明散热引起的冷负荷对荧光灯CL=860×n1×n2×N×CCLN—照明灯具所需功率，千瓦；n1—镇流器消耗功率系数，当明装荧光灯的镇流器装设在空调房间内时取n1=1.2n2—灯罩隔热系数，当荧光灯罩上部穿有小孔（下部为玻璃板），可利用自然通风散热于顶棚内时n2=0.5~0.6取0.5;CCL—照明散热冷负荷系数，根据明装和暗装荧光灯，按照不同的空调设备运行时间和开灯时间及开灯后的小时数，由表4-1取用数值，选空调设备运行12小时，开灯时数10小时。照明散热引起的冷负荷开灯后的小时数01234567891011分项CCL0.630.90.910.930.930.940.950.950.950.960.960.37n11.2n20.5大会议室N1.5CL487.62696.6704.34719.82719.82727.56735.3735.3735.3743.04743.04286.38小会议室N0.6CL195.048278.64281.736287.928287.928291.024294.12294.12294.12297.216297.216114.552（七）其他部分引起的冷负荷走廊门的木头部分的冷负荷时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00分项tl32.632.332.131.831.631.431.331.231.231.331.431.631.8F5.04K2.33tl-tn4.64.34.13.83.63.43.33.23.23.33.43.63.8FK(tl-tn)54.0187250.4957648.1471244.6241642.2755239.9268838.7525637.5782437.5782438.7525639.9268842.2755244.62416（八）各部分冷负荷汇总走廊冷负荷总和时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00分项外墙冷负荷252.726444.175431.033418.076404.934394.043385.220380.901383.153389.724398.548413.943429.338屋面冷负荷588.263478.454400.019368.645392.175470.610611.793792.194996.1251215.7431419.6741592.2311717.727总的瞬变传热冷负荷-40.280-22.154-2.01420.14038.26656.39270.48978.54584.58784.58780.55972.50356.392总的日射得热冷负荷120.774161.344238.349335.092409.367471.314451.029357.562266.982195.048155.024118.27759.997门的木头部分冷负荷54.01950.49648.14744.62442.27639.92738.75337.57837.57838.75339.92742.27644.624总冷负荷975.5021112.3151115.5331186.5771287.0171432.2861557.2841646.7801768.4251923.8552093.7322239.2292308.077大会议室冷负荷总和时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00分项外墙冷负荷1867.511754.811658.221561.621465.031384.531320.131287.941304.041352.331416.72961529.4241642.1184屋面冷负荷3921.753189.692666.792457.632614.53137.44078.625281.296640.838104.959464.4910614.8711451.51玻璃窗瞬变传热冷负荷-313.29-172.31-15.66156.64297.62438.60548.25610.91657.90657.90626.5728563.91552438.60096玻璃窗日射得热冷负荷972.511175.361635.482187.462599.792923.182821.762327.121819.601384.841191.5482321055.599776416.037384人员散热冷负荷44640446404464044640446404464044640446404464044640446404464044640照明散热冷负荷0487.62696.6704.34719.82719.82727.56735.3735.3735.3743.04743.04286.38走廊传热冷负荷487.75556.16557.77593.29643.51716.14778.64823.39884.21961.931046.8659851119.6147461154.038388总冷负荷51576.2351631.3351839.1952300.9952980.2753959.6854914.9755705.9456681.8857837.2559129.24661760266.46404260028.685132换算成W59972.3660036.4360278.1260815.1061604.9762743.8163854.6164774.3565909.1767252.6268754.93792770077.28376969800.796666小会议室冷负荷总和时间7:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:00分项外墙冷负荷1821.351724.881622.431545.131480.391447.381446.111483.181552.621635.261724.501820.971917.45屋面冷负荷1639.511333.471114.871027.431093.011311.611705.092207.872776.243388.323956.684437.614787.37玻璃窗瞬变传热冷负荷-187.97-103.38-9.4093.99178.57263.16328.95366.55394.74394.74375.94338.35263.16玻璃窗日射得热冷负荷1755.122117.522241.302060.291803.341651.431610.861392.921149.73915.56777.97643.23327.13人员散热冷负荷17856178561785617856178561785617856178561785617856178561785617856照明散热冷负荷0195.048278.64281.736287.928287.928291.024294.12294.12294.12297.216297.216114.552走廊传热冷负荷487.75556.16557.77593.29643.51716.14778.64823.39884.21961.931046.8661119.6151154.038总冷负荷23371.7623679.6823661.6123457.8623342.7423533.6524016.6824424.0224907.6625445.9226035.17226512.98526419.699换算成W27176.4627534.5227513.4927276.5827142.7227364.7127926.3728400.0328962.3929588.2830273.4630829.0530720.58夏季湿负荷的计算小会议室：ΣW1=82*200*0.96=15744g/h=4.37g/s大会议室：ΣW1=82*500*0.96=39360g/h=10.93g/s2冬季热负荷计算房间耗热量计算表房间编号房间名称围护结构传热系数室内计算温度空调室外计算温度室内外计算温度差温差修正系数耗热量修正围护结构耗热量围护结构总耗热量朝向风向高度修正名称及方向面积Ktntwtn-twaxcnxf1+xcn+xfxgQ1Q㎡W/(㎡*℃)℃℃℃﹪﹪WW101小会议室南外墙12.25*5-2*2.1*2.451.171.2918-12301-1500.851.021716.90189323934.93138北外墙12.25*5-2*2.1*2.451.171.2918-12301501.051.022120.878809东外墙21.5*12.2597.421.2918-12301-500.951.023653.279226南外窗2.4*2.1*210.082.5918-12301-1500.851.02679.048272北外窗2.4*2.1*210.082.5918-12301501.051.02838.824336东外窗2.4*2.1*210.082.5918-12301-500.951.02758.936304西内墙21*5-2*2.1*2.793.661.7218-12300.70011.024929.51312西内门2*2.1*2.711.342.3318-12300.70011.02808.51932屋顶12*212520.8318-123010011.026400.296地Ⅰ11.88*2*2+20.76*289.040.4718-123010011.021280.57328地Ⅱ9.88*2*2+12.76*265.040.2318-123010011.02457.75152地Ⅲ7.88*2*2+8.76*249.040.1218-123010011.02180.07488地Ⅳ5.8851.510.0718-123010011.02110.33442102大会议室南外墙30*5-5*2.4*2.1124.81.2918-12301-1500.851.024187.4019238467.48644北外墙30*5-5*2.4*2.1124.81.2918-12301501.051.025172.67296南外窗2.1*2.4*525.22.5918-12301-1500.851.021697.62068北外窗2.1*2.4*525.22.5918-12301501.051.022097.06084东内墙21*5-2*2.1*2.793.661.7218-12300.70011.024929.51312东内门2*2.1*2.711.342.3318-12300.70011.02808.51932屋顶30*216300.8318-123010011.0216000.74地Ⅰ30*2*21200.4718-123010011.021725.84地Ⅱ30*2*21200.2318-123010011.02844.56地Ⅲ30*2*21200.1218-123010011.02440.64地Ⅳ30262.80.0718-123010011.02562.9176计算式：Q1=（1+Xg）ΣαKF（Tn-Tw）（1+Xch+Xf）其中K…………..围护结构的传热系数F…………围护结构的面积Tn…………冬季室内计算温度