系数。选择室外机时,办公建筑室内计算负荷宜适当放大1.05-1.2的系数;居住建筑室内计算负荷宜适当放大1.05-1.2的系数。负荷计算样本中数据是在如下体条件测得:制冷工况:制热工况:室内温度27OCDB,19OCWB20OCDB室外温度35OCDB7OCDB,6OCWB管道长度5米,管道高度差0米。说明:在许用范围内,相对冬季制热,夏季制冷室外温度对制冷量的影响较小,管长对制冷量影响较大;冬季制热室外气温对制热量的影响较大,管长对制热量影响较小,修正曲线见图1:系统衰减2.1温度衰减表1夏季室外机进风、室内机回风温度修正系数n1室外机进风干球温度(oC)室内机回风湿球温度(oC)14161819202224240.880.941.001.041.081.161.24280.870.930.991.031.061.131.21320.860.920.981.011.041.101.16350.850.910.971.001.031.081.13400.830.890.950.980.991.031.062系统衰减2.1温度衰减表2冬季室外机进风、室内机回风温度修正系数n1室外机进风湿球温度(℃)室内机回风干球温度(℃)16.018.020.021.022.024.0-15.00.650.640.620.620.620.62-10.00.780.770.760.750.750.74-5.00.890.870.860.840.840.830.00.970.960.940.920.920.865.01.051.030.990.980.940.886.01.061.041.000.980.950.8810.01.121.081.020.990.950.882系统衰减2.1温度衰减图1管长对制冷量的修正曲线n22系统衰减2.2管长衰减管长对制热量修正曲线n22系统衰减2.2管长衰减