Energy consumption level of low-energy buildings among different climate zones in China: Case studies

According to statistics and field investigation, analyses of the energy consumption (EC) level are on the basis of three low-energy office building cases. These cases locate in three typical cities of different climate zones (North China region-Cold zone, East China region-Hot summer and cold winter zone, South China region-Hot summer and warm winter zone) in China. In conclusions, the energy consumption index (ECI) of these three cases is between 41.06 similar to 65.7 kWh/(m(2).a). The percentage of EC used for cooling is more than 26.43%, and the outdoor climate conditions influence the total EC level of the whole building.