因此，重庆地区住宅夏季节能设计应该减少太阳辐射，而冬季则应该控制体形系数、降低维护结构的传热系数。
Therefore , in Chongqing the design for residential energy-saving should reduce solar radiation in summer , and control shape facter or reduce the heat transfer coefficient of the maintenance of the structure in winter .
维护系数