Green Building Renovation of H Office Built 35 Years Ago in Osaka: Equipment System Considering Occupants’ Behavior

For this renovation, several energy-conservation measures with adequate effectiveness and proven performance were installed. In addition, when planning this retrofit, we implemented thermal sensation votes and occupant detection devices to control the air-conditioning system based on occupants’ behavior. An expanded BEMS, the purpose of which was to enable interactive communication between occupants and facility managers, was also established to consider the occupants’ lifestyle. Furthermore, a cooling room was installed near an entrance to remove body thermal storage after outdoor activity in summer. Consequently, this renovation achieved 28% energy-conservation.