green apartment building
TRANSCRIPT
Green apartment building
France Site Marseille
Ground floor
• 22,000 %2 -‐ 5 stories -‐ 18 apartments divided in two stripes • 3,550 %2 central semi-‐public space • 1,800 %2 retail space
First floor
Green processes : • individual greenhouses • use of prefabricate wood • 4,470 %2 roof for rainwater retenAon (flush and watering) • 1,680 %2 solar panel
General sec3on
solar panels green roof
maximum south exposure
greenhouses
permeable ground prefabricate wood
LEED checklist -‐ summary
-‐ Building orientaAon for solar design -‐ Site selecAon -‐ Access to open space -‐ Management of run-‐off from roof -‐ High density -‐ Gray water reuse system -‐ Pipe insulaAon -‐ Off -‐ site fabricaAon -‐ Environmentally preferable products -‐ EducaAon of building manager -‐ Enhanced insulaAon -‐ Greatly reduced envelope leakage -‐ Enhanced windows -‐ Renewable energy system
Etc…
1 point 2 points 1 point 2 points 3 points 1 point 1 point 4 points 8 points 1 point 2 points 2 points 2 points
10 points
Total -‐ 76 points – LEED Gold
Scenario 1 • Building orienta3on : NE-‐SW • Windows : double glazed, no blinds • Medium wall insula3on • Medium roof insula3on • Green roof
Results : Hea3ng energy : 18,000 BTU/O2/floor Electrical energy : 14,000 BTU/O2/floor Total : 32,000 BTU/O2/year/floor Total building : 704,000,000 BTU/year
SimulaAon of energy usage per year -‐ MIT Design Advisor
Scenario 2 • Building orienta3on : NE-‐SW • Windows : double glazed, included blinds • Medium wall insula3on • High roof insula3on • Green roof Results : Hea3ng energy : 13,000 BTU/O2/floor Electrical energy : 19,000 BTU/O2/floor Total : 32,000 BTU/O2/year/floor Total building : 704,000,000 BTU/year
EsAmate of solar energy produced per year -‐ PVWaWs calculator
1,680 '2 solar panel System size : 28kW 39,000 kWh per year / 133,000,000 BTU per year produced Approximate energy cost : 0.12$/kWh Es;mate saving per year : $ 4,690 704,000,000 – 133,000,000 solar energy = 571,000,000 BTU/year ⇒ 26,000 BTU/'2/year (standard for a PassivHaus : 25,000 BTU/%2/year)
EsAmate water usage -‐ storm water retenAon
Average water usage for a household of 4 people : 400 gallons per day BUT use of : • low flow faucet • low flow shower heads • low flush toilet => 300 gallons per day
Use of water for the building : approximately 1,885,000 gallons per year Rainwater in Marseille : 14 gallons of water/%2/ year Green roofs retains approximately 75% of the rainwater (4 inches of soil) => 58,000 gallons of rainwater per year can be used for flushes and watering
Es3mates -‐ Summary
• 76 points on the LEED checklist : LEED Gold
• Energy used : 32,000 BTU/%2 per year
• Solar energy produced : 6,000 BTU/%2 per year
• Energy used -‐ energy produced : 26,000 BTU/%2/year
• EsAmate energy saving : $4,690 per year
• Water used : 1,885,000 gallons per year
• Re-‐use of rainwater : 58,000 gallons per year
