ISO 15927-4:2005规定了适用于评估加热和制冷年平均能源的适当气象数据小时值参考年的方法。代表平均条件的其他参考年份可以用于特殊目的。 ISO 15927-4:2005这一部分的程序不适合用于模拟例如寒冷年份的水分损失或能源需求的极端或半极端年份。 气象仪器和观测方法未涵盖

ISO 15927-4:2005 specifies a method for constructing a reference year of hourly values of appropriate meteorological data suitable for assessing the average annual energy for heating and cooling. Other reference years representing average conditions can be constructed for special purposes. The procedures in this part of ISO 15927-4:2005 are not suitable for constructing extreme or semi-extreme years for simulation of, for example, moisture damage or energy demand in cold years. Meteorological instrumentation and methods of observation are not covered.