Paper Conference

Proceedings of ASim Conference 2016: 3rd Asia conference of IBPSA-China, Japan, Korea


Simulation based analysis on the influence of occupants' presence on energy consumption of office buildings

Y. Ko, Y. Yamaguchi, Y. Miyachi, B. Kim, S. Kimura, K. Ikeda, Y. Shimoda

Abstract: This paper quantitatively evaluates how occupancy schedule influence the energy performance of office buildings while considering the relation with the building size and the configuration of HVAC system. For this purpose, we randomly selected 1584 office workers with different occupancy schedule from a database. Then we assumed three sets of office buildings that accommodate the 1584 workers and estimated energy consumption of the buildings. The simulation result shows, the active floor rate in the larger buildings are higher than that in the smaller buildings, in particular at night. Due to this, the larger buildings resulted the longer operation time of the HVAC systems and the larger energy consumption. In addition to this, we compare the energy consumption of the buildings with 1584 typical occupancy schedules and the empirical schedules from the database in order to clarify the impact of occupancy schedule. The simulation resulted that the occupancy schedule has more influences on the larger buildings. The energy consumption of the buildings with the typical schedules resulted significantly smaller than that with the empirical schedules. This is due to that the typical case causes the lower active floor area rate.
Keywords: Occupant behavior, equipment operation, office building, building size