This work exploits available data from energy audits of about 350 Hellenic school buildings from the national electronic repository that have been performed for issuing energy performance certificates The average construction characteristics of the building’s envelope and technical characteristics of the electromechanical installations are defined in order to gain a better understanding of the existing condition of school buildings. The resulting final and primary energy use intensities are calculated, as well as the respective energy ratings. Building envelopes are not thermally insulated or partly insulated, and the prevailing central heating systems are oil-fired boilers. Schools are commonly ranked at energy class-D, with average energy use intensity 98.8 kWh/m² for final and 158.9 kWh/m² for primary energy. Generally, space heating is the most significant service, followed by lighting and space cooling. In addition, available data on actual energy use of the buildings is analysed and used to generate empirical correction factors that relate the calculated energy consumption with the actual energy use. On average, actual thermal energy use is about twenty percent higher than calculated, while the actual electricity consumption is about half of the calculated value.

这项工作利用了来自国家电子资源库的大约 350 座希腊学校建筑的能源审计的可用数据，这些数据已被执行以颁发能源性能证书 定义建筑物围护结构的平均建筑特征和机电装置的技术特征，以获得更好地了解校舍的现有状况。计算得出的最终和初级能源使用强度，以及各自的能源等级。建筑围护结构不隔热或部分隔热，流行的中央供暖系统是燃油锅炉。学校通常被评为 D 级能源，最终平均能源使用强度为 98.8 kWh/m ²，平均能源使用强度为 158.9 kWh/m ²为一次能源。一般来说，空间供暖是最重要的服务，其次是照明和空间制冷。此外，对建筑物实际能源使用的可用数据进行分析并用于生成将计算的能源消耗与实际能源使用相关联的经验修正系数。平均而言，实际热能使用量比计算值高出约百分之二十，而实际用电量约为计算值的一半。