Comparison of low-energy office buildings in summer using different thermal comfort criteria

Monitoring campaigns have been carried out over 2 or 3 years in 12 low-energy office buildings located in three different summer climate zones (summer cool, moderate, and summer hot) in Germany. The raw data were processed for data evaluation of the time of occupancy. A comfort evaluation in these 12 low-energy office buildings indicates clearly that buildings using only natural heat sinks for cooling provide a good thermal comfort during typical and warm summer periods in Germany.