Panasonic Electric Works Tokyo Headquarters building

Last Uploaded: December, 2009


Bird's-eye view of site

Special Features

Q-1 Indoor Environment	Low-e glass is used for all faces West-side two-layered open ceiling: Blind control air flow windows East side: Blind control and air flow close to the window Individual control by area control when nobody is present Natural ventilation system Natural daylighting system Outdoor air intake: 30 m³/h/person
Q-2 Quality of Service	OA floor: 150 mm Power supply capacity: 60 VA/m² Ceiling height: 2.8 m Story height: 4.25 m Modular design (easy partition) Outdoor air cooling system Earthquake resistance level: 1.5 times the level required by the Building Standard Law Damper District cooling and heating system (highly reliable) District grey-water system Collected drainage treatment facility
Q-3 Outdoor Environment on Site	Roof greening Townscape coordination of the entire redeveloped block Restored station house within the same block (preserving historical buildings)
LR-1 Energy	PAL value: 283.6 MJ/m²/year CEC/AC: 1.36, CEC/V: 0.84, CEC/L: 0.63, CEC/EV: 0.56 Energy saving target: Approx. 20% higher than general buildings (2,115 MJ/m²/year) Natural daylighting, natural ventilation, and photovoltaic power generation systems were installed Conservation of energy at the operation stage: Metering of each air conditioning system and detailed metering of power consumption by power units, lighting, and outlets in each zone A dispersed type BEMS is installed Commissioning (performance verification) was conducted by the owner, the facility supervisor, the designer, and the constructor at the operation stage
LR-2 Resources and Materials	Water reclaimed by local infrastructure is used Collected drainage treatment facility Toilet flushing sound simulator and water-saving toilet bowls are used Kitchen garbage is composted CFC-free fire extinguishers Individual air conditioning system by using non-CFC refrigerant Wooden materials are used for a wood deck, etc.
LR-3 Off-site Environment	The heat island effect resulting from the use of local air conditioning is prevented Air pollution resulting from non-combustion appliances is prevented (hot water is supplied to kitchens by night storage type water heaters) Roof greening, wood deck and greening on the 24th floor West side lighting that takes into consideration light pollution in order to avoid disturbing neighboring buildings Noise and vibration-producing appliances are installed underground or measures to reduce noise are taken

Other Features

Outside air cooling system
Lighting/air conditioning/blind cooperative control system

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These cases are described based on assessment results obtained using CASBEE.
CASBEE is a method for rating the environmental performance of buildings using Building Environmental Efficiency (BEE) as an indicator, which is based on the results of separate scores obtained for Q-1~Q-3 (Quality) and LR-1~LR-3 (Load Reduction).