新民用建筑暖通规范下的冷热负荷计算-20140525

新民用建筑暖通设计规范下的冷热负荷计算（案例）

——GB50736-2012冬季热负荷（见规范5.2节）围护结构的耗热量；加热由外门、窗缝隙渗入室内的冷空气耗热量；加热由外门开启时经外门进入室内的冷空气耗热量；通风耗热量；通过其他途径散失或获得的热量。夏季逐时冷负荷（见规范7.2节）通过围护结构传入的热量；通过透明围护结构进入的太阳辐射热量；人体散热量；照明散热量；设备、器具、管道及其他内部热源的散热量；食品或物料的散热量；渗透空气带入的热量；伴随各种散湿过程产生的潜热量。如何查表先通过表H.0.1-5查到外墙类型外墙如何查表先通过表H.0.1-3查到外墙类型外墙屋面查P244-表H.0.1-6实例——建筑平面图围护结构的构成材料及热工性能指标1）屋面屋面类型及热工性能指标（由外到内）类型材料名称厚度（mm)密度（kg/m3)导热系数[W/(m.K)]热容[J/(kg.K)]传热系数[J/(kg.K)]衰减延迟（h)3细石混凝土4023001.519200.490.1612.3防水卷材49000.231620水泥砂浆2018000.931050挤塑聚苯板35300.0421380水泥砂浆2018000.931050水泥炉渣2010000.023920钢筋混凝土12025001.74920围护结构的构成材料及热工性能指标2）外墙外墙类型及热工性能指标（由外到内）类型材料名称厚度（mm)密度（kg/m3)导热系数[W/(m.K)]热容[J/(kg.K)]传热系数[J/(kg.K)]衰减延迟（h)1水泥砂浆2018000.9310500.560.349.1挤塑聚苯保温板20300.031380加气混凝土砌块2007000.22837水泥砂浆20018000.931050围护结构的构成材料及热工性能指标3）外窗外窗热工性能指标（由外到内）（资料来源：鸿业负荷软件）名称材料名称厚度（mm)密度（kg/m3)导热系数[W/(m.K)]热容[J/(kg.K)]传热系数[J/(kg.K)]衰减延迟（h)双层5mm外窗平板玻璃525000.768403.07-0.4热流水平（垂直）121.1640.0831.013平板玻璃525000.76840外门热工性能指标（由外到内）（资料来源：鸿业负荷软件）名称材料名称厚度（mm)密度（kg/m3)导热系数[W/(m.K)]热容[J/(kg.K)]传热系数[J/(kg.K)]衰减延迟（h)双层金属门建筑钢材2785058.24803.06-0.3矿棉岩棉玻璃棉毡140151400.0451.34建筑钢材2785058.24804）外门围护结构逐时冷负荷屋顶计算时刻123456789101112131415161718192021222324twlm46.245.845.344.844.243.64342.441.841.34140.940.941.341.742.443.34444.745.445.946.346.546.4tn26K0.73F17.55CLwm258.7923253.6677247.262240.8562233.1693225.4824217.7955210.1086202.4217196.016192.1725190.8914190.8914196.016201.1406210.1086221.639230.607239.5751248.5431254.9489260.0735262.6358261.3546

北外墙计算时刻123456789101112131415161718192021222324twlq3534.634.334.133.833.633.433.233.233.233.333.533.633.934.134.434.734.935.235.435.535.535.535.7tn26Kq10.83F10.35CLwq177.314573.878371.3011569.5830567.005965.287863.569761.851661.851661.851662.7106564.4287565.287867.8649569.5830572.160274.7373576.4554579.032680.750781.6097581.6097581.6097583.32785围护结构逐时冷负荷北外窗太阳辐射得热计算时刻123456789101112131415161718192021222324Cclc0.180.170.150.140.170.290.380.440.480.550.620.670.70.710.690.690.650.580.390.340.30.260.240.21Cw1Cn0.5Cs0.79Djmax157Fc北1.8CLc20.0928618.9765916.7440515.6277818.9765932.3718342.4182649.1158853.5809661.3948569.2087474.7900978.138979.2551777.0226377.0226372.5575564.7436643.5345337.9531833.488129.0230226.7904823.44167

北外窗传热逐时冷负荷计算时刻123456789101112131415161718192021222324twlc30.930.630.330.13030.230.731.43232.633.333.934.334.634.634.534.333.933.332.732.331.931.531.2tn26Kq23.07F1.8CLwc27.077425.419623.761822.656622.10423.209225.972229.840433.15636.471640.339843.655445.865847.523647.523646.97145.865843.655440.339837.024234.813832.603430.39328.7352

北外门（按外墙逐时冷负荷计算温度）计算时刻123456789101112131415161718192021222324twlq3534.634.334.133.833.633.433.233.233.233.333.533.633.934.134.434.734.935.235.435.535.535.535.7tn26Kq33.06F1.89CLwq252.050649.7372448.0022246.8455445.1105243.9538442.7971641.6404841.6404841.6404842.2188243.375543.9538445.6888646.8455448.5805650.3155851.4722653.2072854.3639654.942354.942354.942356.09898室内热源散热逐时冷负荷人体散热逐时冷负荷（按办公建筑工作时间8:00-18:00设计）时刻123456789101112131415161718192021222324Cclrt00000000.470.790.840.860.880.90.910.920.930.940000000Qxr61Qqr73Φ0.98n2Qcl143.08143.08143.08143.08143.08143.08143.08199.2732237.5324243.5104245.9016248.2928250.684251.8796253.0752254.2708255.4664143.08143.08143.08143.08143.08143.08143.08

照明散热逐时冷负荷（按办公建筑工作时间8:00-18:00设计）时刻123456789101112131415161718192021222324Cclzm00000000.40.720.780.810.830.860.870.890.90.920000000Czm1Qzm415.5102n11.2n20.7CLzm0000000139.6114251.3006272.2423282.7131289.6937300.1646303.6549310.6354314.1257321.10630000000室内热源散热逐时冷负荷设备散热逐时冷负荷（按办公建筑工作时间8:00-18:00设计）时刻123456789101112131415161718192021222324Cclsb00000000.780.910.930.940.950.960.960.970.970.970000000Csb1Qsb461.678n10.8n20.6n31CLsb0000000172.8522201.661206.0931208.3091210.5252212.7412212.7412214.9573214.9573214.95730000000

小计时刻123456789101112131415161718192021222324人体143.08143.08143.08143.08143.08143.08143.08199.2732237.5324243.5104245.9016248.2928250.684251.8796253.0752254.2708255.4664143.08143.08143.08143.08143.08143.08143.08照明0000000139.6114251.3006272.2423282.7131289.6937300.1646303.6549310.6354314.1257321.10630000000设备0000000172.8522201.661206.0931208.3091210.5252212.7412212.7412214.9573214.9573214.95730000000总计143.08143.08143.08143.08143.08143.08143.08511.7369690.4939721.8457736.9239748.5117763.5898768.2757778.6679783.3538791.53143.08143.08143.08143.08143.08143.08143.08夏季空调逐时冷负荷夏季汇总时刻1234567891011121314151617181920212223