By the weather data of typical year from meteorological observation , the building facing correction factors of heating load of 27 cities in china are listed . not only the effect of direct solar radiation on the building facing correction factor , but also that of diffuse solar radiation is considered . this paper also analysis the effect of different building facing correction factors on the calculation of heating load 以各氣象臺(tái)站實(shí)測(cè)典型年氣象資料為基礎(chǔ),綜合考慮了直射輻射和散射輻射兩種情況,給出了全國27個(gè)城鎮(zhèn)的各朝向修正系數(shù),并對(duì)采用不同修正系數(shù)對(duì)房間負(fù)荷計(jì)算的影響進(jìn)行了對(duì)比分析。