建筑动态采光模拟普遍采用辐射光当量法, 而挑选1套符合地区气候特征的典型年数据是进行采光模拟的前提.本文选取3套国内常用典型年数据:CSWD、ChinaTMY2数据、DeST典型年数据, 同时以天津地区1年多的逐时太阳辐射观测数据为参考, 对太阳总辐射、散射辐射按照全年逐时变化、各月均值变化、各季节逐时日变化方式进行比对, 初步分析了3套典型年数据中辐射数据的变化规律及差异.从总辐射的比对结果来看, DeST典型年数据最为符合天津气候特征, 与实测数据吻合度最高;ChinaTMY2数据趋势平缓;CSWD变化规律与其他3套数据均存在较大差异.而3套典型年数据散射辐射比对结果则并不理想.%Luminous efficacy model is widely used in building dynamic daylighting simulation. To derive a set of daylight illuminance data, which accords with the climatic characteristics in certain areas, is the premise of daylighting simulation. This paper uses CSWD、ChinaTMY2、DeST TMY data, which has been commonly used in China. Based on the following ways like Annual overall variation、Monthly mean variation、Seasonal daily variation, and using more than a year of observation data of Tianjin as reference, the value of global solar irradiance and diffuse irradiance are compared. The variation rule and differences of the three TMY data are preliminarily discussed. From the comparison of the global solar irradiance, the TMY data produced by DeST is more in line with the climatic characteristics of Tianjin. However, the result of the comparison of diffuse irradiance is not ideal.
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