BS EN 61725-1997 每日太阳外形分析表达

标准号：BS EN 61725-1997
中文标准名称：每日太阳外形分析表达
英文标准名称：Analytical expression for daily solar profiles
标准类型：F12
发布日期：1997/12/15 12:00:00
实施日期：1997/12/15 12:00:00
中国标准分类号：F12
国际标准分类号：27.160
适用范围：This procedure provides a normative equation for analytically deriving a set of data points or a curve of irradiance versus time of day for a synthetic solar day. The coefficients of the normative equation for the analytical solar irradiance profiles are determined from measured or estimated values of maximum solar irradiance, daily solar irradiation and the number of daylight hours. These three input data define the curve of the analytical solar irradiance profiles. Depending on the objectives, these data may represent, for example, the worst winter day of a certain place, or the average day of a summer season, etc. CAUTION - While the results from the normative equation match measured clear sky data reasonably well, it is not intended to predict or simulate a real day. A daily solar irradiance profile is defined based on user-selected values for peak irradiance, daily irradiation and total daylight hours.