冷负荷计算步骤Word文档格式.docx

1、Cn 窗内遮阳设施的遮阳系数；Djmax 日射得热因数；Ccl 窗玻璃冷负荷系数，无因次；内围护结构冷负荷 （4.5）式中 K 内围护结构传热系数，W/（m2 ）； F 内围护结构的面积，m2；t 附加温升，取5。照明散热形成的冷负荷查空调负荷实用计算法表4-1得照明设备散热冷负荷系数QCL值。照明设备散热冷负荷计算公式： ，其中n1=1.0（采用暗装荧光灯），n2取0.6，N=Fq（F为各房间面积，q为照明容量）。 （4.6）式中 N 照明灯具所需功率，W； n1镇流器消耗功率稀疏，明装时，n1=1.2，暗装时，n1=1.0；此为暗装 n2灯罩隔热系数，灯罩有通风孔时，n2=0.50.6；无

2、通风孔时，n2=0.60.8；取0.7Ccl照明散热冷负荷系数。设备散热形成的冷负荷无罩设备和用具显热散热冷负荷系数QCL 值由空调负荷实用计算法表4-6查得。散热设备冷负荷计算公式：，其中N=Fq（F为各房间面积，q为设备单位发热量）。 （4.7） N机器设备发热量Ccl设备和用具显热散热冷负荷系数人体散热形成的冷负荷室内人员散出的热量包括显热和潜热两部分，显热散热中对流热成为瞬时冷负荷，而辐射热部分则先被围护结构等物体表面所吸收，然后再慢地逐渐散出，形成冷负荷.潜热散热瞬时冷负荷。人体散热与性别，年龄，衣着，劳动强度以及环境条件（温、湿度）等多种因素有关。从性别上看，可认为成年女子总散热量

3、约为男子的85%，儿童约为75%。由于性质不同的建筑物中有不同比例的成年男子，女子和儿童数量，而成年女子和儿童的散热量低于成年男子。为了实际计算方便，可以成年男子为基础，乘以考虑了各类人员组成比例的系数，称群集系数。人体显热散热形成的逐时冷负荷为： （4.8）式中 qx 不同室温和劳动性质成年男子显热散热量，W；qq 不同室温和劳动性质成年男子潜热散热量，W；n 室内全部人数； 群集系数；Ccl 人体显热散热冷负荷系数；501房间：内围护结构冷负荷：K=0.97F=（7.7+1.7+8）3.5=59.15t=5Q=0.97*59.155=286.9W窗瞬变传热冷负荷：表4.1 501房间窗瞬变

4、传热冷负荷分项时刻7891011121314151617t2626.927.92929.930.831.531.932.232tj=（tj+t）K27.4428.3229.330.3831.2632.1432.8333.2233.52F27K03.12K=1.2K03.74-tn1.442.323.34.385.266.146.837.227.52Qcl143.08230.52327.89435.2522.63610.07678.63717.38747.19727.32窗日射得热冷负荷： （4.3）表4.2 501房间窗日射得热冷负荷0.7527=20.25KCZ0.516Djmax122W/

5、Ccl0.540.650.810.830.790.710.60.61688.38828.61956.081032.571058.071007.07905.09764.87777.61其中根据不同朝向取不同值251 W/；东：575 W/；122 W/；西：水平：844 W/照明冷负荷：表4.3 501房间照明冷负荷123456n1n20.70.690.860.890.90.910.920.930.940.95N=Fq67.0725=1676.75809.871009.41044.621056.351068.091079.831091.561103.31115.04设备冷负荷： （4.7）表4.

6、4 501房间设备冷负荷0.680.730.770.850.87N1676.751006.051140.191224.031291.11358.171391.71425.241458.771492.311509.08人体冷负荷： （4.9） （4.10）表4.5 501房间人体冷负荷0.530.620.740.8qq57W77Wn67.07/6=11人0.96Qq770.96=813.1WQx319373.2415.3445.4463.5481.5499.6511.6523.7535.71132.11186.31228.41258.51276.61294.61312.71324.71336.8

7、1348.8以上是第501房间的各冷负荷计算，其他房间计算方法与该房间一致，故不另外列出详细计算过程，而以表格的形式列出，具体表格见下表。表4.6 五至六层冷负荷501时间外围护结构负荷内围护结构286.9外窗玻璃瞬变425.2玻璃日射得热室内设备散热1458.81509.1室内照明1115人体散热房间最大值4367.18502135.811.36197.14280.41372.18446.96521.73580.36613.5639622579.26697.26804.53868.89890.34847.43761.62643.62654.35841.2953.361023.461079.5

8、41135.621163.661191.71219.71247.781261.8677.17844873.45883.26893.07902.89912.7922.52932.33926.3970.61005.11029.71044.51059.31074.11083.91093.81103.64775.23503303.9续表170.77275.13391.35519.43623.79728.15809.98856.23891.81868.09889.291070.441235.121333.931366.861300.991169.3988.091004.6944.551070.49114

9、9.21212.171275.141306.631338.111369.61401.081416.8760.36947.7980.76991.781002.81013.821024.841035.91046.861046.91029.21078.51116.81144.11160.511771193.41204.31215.31226.25871.01505229.2101.22163.08231.97307.88369.74431.6480.1567.52528.61514.55479.32576.96665.72718.97736.73701.22630.21532.51541.45652

10、.05738.99793.33836.8880.27902923.74945.47967.21978.08524.9654.22677.05684.65692.26699.87707.47715.08722.69720.4754.9781.7800.8812.3823.8835.3843850.6858.33964.45506203.7175.17282.21401.42532.8639.84746.89830.83878.27914.76890.43283.29360.55437.81463.56489.32515.07875.621442.21854.32137.5519831159.21

11、313.761410.361487.641564.921603.561642.21680.81719.481738.8933.161163.061203.641217.161230.681244.211257.731271.31284.781284.8133814021451.81487.41508.71530.11551.41565.71579.91594.17840.17507558.6821.311263.561832.162274.42653.472527.111958.521421.51010.85758.131195.21354.561454.161533.841613.52165

12、3.361693.217331772.881792.8962.141199.181241.021254.961268.91282.851296.791310.71324.689024.08508397.25573.81882.781280.031589.011853.841765.561368.31993.13706.22529.67769.2871.76935.86987.141038.421064.061089.71115.31140.981153.8619.2771.76798.69807.66816.63825.61834.58843.56852.53823.4862.8893.591

13、5.3928.5941.6954.7963.5972.39815844.02509140.974.32119.74170.32226.06271.48316.9352.51372.64388.12377.8241.29348.53536.2777.48965.151126.011072.39831.1603.22428.96321.72801.15907.97974.731028.141081.551108.261134.961161.71188.371201.7644.93803.82831.86841.21850.55859.9869.25878.59887.944422.95510171.4117.19188.81268.56356.45428.07499.69555.84587.58611.99595.72380.47549.56845.481225.951251.861775.511690.961310.49951.17676.38507.29866.85982.431054.671112.461170.251199.141228.041256.91285.831300.3697.81869.74900.08910.19920.31930.42940.53950.65960.761226