A PROJECT IN JAPAN DISTINGUISHED FOR ITS COMMITMENT TO SUSTAINABILITY THE FRENCH EMBASSY IN TOKYO
- FROM AIRPORT TO EMBASSY: A TROPISM - A STRONG ALLIANCE BETWEEN FRENCH AND JAPANESE COMPANIES:
VICINITY MAP
SITE PLAN
2005
2013
SITE INTEGRATION LONGITUDINAL SECTION NORTH ELEVATION SOUTH ELEVATION
PLAN THREE SHARP-ANGLED COMPONENTS
BASEMENT LEVEL
CURRENT LEVELS
SUSTAINABLE DESIGN ORIENTATIONS
SUSTAINABLE DESIGN ORIENTATIONS
SUSTAINABLE DESIGN ORIENTATIONS
SUSTAINABLE DESIGN ORIENTATIONS
SUSTAINABLE DESIGN ORIENTATIONS
PRISMATIC GREENWALL
PRISMATIC GREENWALL
PRISMATIC GREENWALL
External Temperature [ C] Relative Humidity [%] NATURAL VENTILATION: FEASABILITY STUDY 35 30 25 20 15 10 5 thermal comfort Evolution of the External Temperature throughout the year, Tokyo 0 0 3 6 9 12 15 18 21 24 Hour of the day Too hot Mars Avril Mai Juin Juillet Août Septembre Octobre Novembre 100 90 80 70 60 50 40 30 20 10 hygrometrical comfort Evolution of the External Humidity throughout the year, Tokyo 0 0 3 6 9 12 15 18 21 24 Hour of the day Too humid Janvier Mars Mai Juillet Septembre Octobre Décembre 6th of March 9H00..11H00..15H00.17H00.19H00 30 th of November, 10H00 21 st of January, 10H00... 21 st of February, 10H00
NATURAL VENTILATION THROUGH SOLAR CHIMNEY AND HEAT RECOVERY WINTER MODE: If T ext < T min 15 C, then Heating Mechanical extraction with heat recovery The chimney is closed SUMMER MODE: If T ext > T max 26 C, then Cooling Mechanical extraction The chimney is closed Heat exchanger Air Pump T ext << 15 C deshumidifier ext T ext > 26 C ext T int 22 C T int 26 C T int 22 C T int 26 C
NATURAL VENTILATION THROUGH SOLAR CHIMNEY AND HEAT RECOVERY MID SEASON: thermal uplift If T min < T ext < T max 26 C, then Natural Ventilation stack effect : natural extraction The chimney is open T int 24 C 15 C <T ext < 26 C T int 24 C Natural ventilation + Heating thermal uplift Natural ventilation + Cooling thermal uplift Text 20 C Text 23 C T int 22 C T int 24 C T int 24 C T int 22 C
Cooling Need [kwh/m²] Total Cooling Need [kwh/m²] NATURAL VENTILATION THROUGH SOLAR CHIMNEY AND HEAT RECOVERY 22 20 18 16 14 12 10 Cooling Need, with and without Natural Ventilation Base Natural Ventilation 90 80 70 60 50 40 30 20 10 0 Full Year Base Natural Ventilation 8 6 4 2 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Base [kwh/m²] 82 Natural Ventilation [kwh/m²] 53 Energy Savings 34%
NATURAL VENTILATION THROUGH THE ATRIUM Natural ventilation Heat dissipation during summer
JAPANESE SUSTAINABLE CERTIFICATION: CASBEE Comprehensive Assessment System for Built Environment Efficiency ENVIRONMENTAL QUALITY AND PERFORMANCE POSITIVE IMPACT INSIDE THE BOUNDARY. ASSESSMENT CATEGORY «Q» BUILDINGS ENVIRONMENTAL LOADINGS OUTSIDE THE BOUNDARY BUILT ENVIRONMENT LOAD. ASSESSMENT CATEGORY «L» Resource consumption, embodied CO 2 emission Emission of air pollutant, noise, heat NEIGHBORING BUILDING TARGET BUILDING NEIGHBORING BUILDING Soil, water- pollutant SITE BOUNDARY
ASSESSMENT RESULT BY BAR CHARTS ENVIRONMENTAL QUALITY ENVIRONMENTAL LOAD REDUCTION
INDICATOR BEE BASED ON ECO-EFFICIENCY ECO-EFFICIENCY = QUALITY OF LIFE ENVIRONMENTAL LOAD BUILDING ENVIRONMENTAL EFFICIENCY BEE = Q ( Quality of Building ) L ( Building environmental Load )
CASBEE ASSESSMENT RESULT
ENTRANCE VISA BUILDING
SOUTH FACADE
PRISMATIC GREENWALL
NORTH FACADE
THE ATRIUM