指出，目前计算建筑冷负荷的方法使用了许多近似方法来计算通过窗户的太阳辐射，其中有来自悬挑和侧翅片的阴影。介绍了ASHRAE、德国和荷兰标准计算程序与更精确的“负冷负荷”方法的比较。比较表明，上述程序的结果与“负荷载”法的值存在显著差异。在一天中的某些时段，差异可能高达50%。关键词:计算、冷负荷、建筑物、窗户、日照、太阳辐射、太阳热增益、阴影、精度、比较、标准、荷兰、德国。 引用:研讨会，ASHRAE Trans。，1993年，第99卷，第2部分，论文编号DE-93-1-1429-439，图7，表2，参考文献。

States that current methods for calculating the building cooling loads use many approximations to account for solar radiation through a window where there is shadow from overhangs and side fins. Presents a comparison of the ASHRAE, German and Dutch standard calculation procedures with a more precise method of 'negative cooling load'. The comparisons show that the results from the above procedures differ significantly from the values of the 'negative load' method. At certain periods of the day, the difference may be as much as 50%.KEYWORDS: Calculating, cooling load, buildings, windows, insolation, solar radiation, solar heat gain, shade, accuracy, comparing, standards, Netherlands, Germany.