hackbridge, south london 3.5 acres cost - wordpress.com · bedzed ecological and carbon footprint...
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Results from REAP BedZED scenarios
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Housing
Transport
Food
Consumer Items
Private
Services
Public Services
Capital In
vestment
Baseline
BedZED average
BedZED Keen
BedZED Case StudyArchitect: Bill Dunster Architects, initiated by BioRegional and developed by PeabodyDate: 1999-2002Location: Hackbridge, south Londonsize: 3.5 acresCost: € 17 million: construction costs (€ 14 million); taxes (€ 2,5 million); planning and audit costs (€ 0,5 million); Construction cost of the 82 residential unit (€ 8 million)Design Concept: create a “net zero fossil energy development” 50% reduction in fossil fuel consumption Materials sources within 35 miles of site.
Reduce fuel cost of residentsLower energy running billCombining live/work assist startup businessImproved site ecological valueBuilding cost 30% higher than expectedApartments 20% higher than market value
Economy:
Social:Public transportationLive/work combinedPrivate open space in each homeImprove air qualityCommunity internetCloser relationship between neighbors
Environmental:Energy: -100% renewable energy -Passive solar heating in winter -Solar panels -Charging station for electrical cars -Wind powered ventilation systems -Zero fossil fuel -Heating system problems/defectsWater: -Rainwater storage tank underground -Rainwater used for �ushing toilet and irrigating gardens -Conservation strategies (spray taps/ showers, dual/low �ush toilets) -On-site ecological water treatment
Waste: -Recycling facilities -Each home includes under-sink bin divided into 4 sections -Urban tree waste bio-fuelled CHP Construction: -Recycled timbers -Reused structural steels -Materials sourced locally -Timber used in preference to steel/ aluminum -Houses face south for solar gain -Roof gardens on top of workspaces
Transportation: -Footpaths and cycle routes encourage walking and biking -Electric/hybrid cars have priority -Supermarket internet home delivery -Public transportation -No one owns a electric vehicle
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pablo la roche
Sources: www.bioregional.com http://sustainablecities.dk http://www.arup.com
BedZED 20074
BedZED 2007 if CHP in operation5
UK Average (based on dwellings built in 2002)
Heating & hot water
kWh /m²/yr
48.0 48.0 231.8
CO2 /m²/yr
9.3 1.2 45
Electrical load
kWh /m²/yr
34.4 34.4 45.5
CO2 /m²/yr
10.6 -8.9 18.4
Total energy use
kWh/m²/yr
82.4 82.4 275.3
CO2/m²/yr
19.9 -7.7 63.3
Total water consumption summaryBedZED 2003 litres/ person/ day
BedZED 2007 litres/ person/ day
Local average for metered properties litres/ person/ day
91 87 143
Travel to work
Car17%
Bus7%
Train54%
Bike11%
Foot11%
Motorbike0%
2007 Waste audits Questionnaire
Waste stream
Kg/ household/ week
Kg/ person/ week
% composition (weight)
% composition (volume)
% households using the bin
mix dry (cans/ fabric / plastic/ card/ paper)
2.4 1.2 30% 90%
green glass 1.0 0.7 12% 80%
brown glass 0.2 0.1 2% 72%
clear glass 0.4 0.2 5% 82%
white paper 0.0 0.0 0% 45%
Total recycling 4.0 2.2 50% 37% 90%
Compost 0.6 0.3 10% 7% 31%
Landfill 3.5 2.0 40% 56% 94%
Total 8.1 4.5 100% 100% n/a
Neighbours known by name at BedZEDLess than 4 16%
4-9 22%
10+ 62%
Average 20
Range 0-150
BedZED ecological and carbon footprint scenarios (REAP)
Item ‘Sutton average’ ‘BedZED average’’ ‘‘BedZED keen’
Average data from the REAP software
Data acquired through the 2007 monitoring period
BedZED average data modified to assume a resident making a significant effort to reduce impact. Also modified to represent the energy supply as originally intended.
Energy and home
Electricity 3.9kWh pp per dayOther fuel 18.2 kWh per day
Electricity: 3.4 kWh pp per day20% electricity from PVHeat and hot water: 5.2 kWh pp per day
Energy demand classed as zero due to planned renewables meeting all capacity.
Personal travel in private car
5,282 km/year 2,015 km/year 0 km/yearAlso 0 km/year by taxi
Private vehicle ownership
1.6 cars per household 0.6 cars per household 0 cars per household
Train 897 km/year 4992 km/year 4992 km/year
Bus 465 km/year 676 km/year 676 km/year
Air travel 3,245 km/year 10,063 km/year 0 km/year
Consumable items Includes clothing, furniture, tools, appliances, personal care etc.
100% of UK typical consumption.
Reflects ‘typical western style’ consumption patterns.
100% of UK typical consumption.
Replacing clothes and other items when they are worn out and need replacing as well as occasional other purchases.
41% of UK typical consumption
Replacing clothes and other items when they are worn out and need replacing.
- tobacco and jewellery to zero
- audio-visual equipment reduced by 75%
- clothing, furniture, textiles & personal care reduced by 50%
- household appliances, tools, utensils, maintenance, and recreational items reduced by 20%
Diet Typical diet from REAP 25% of veg, fruit, meat and diary are organic
Healthy vegetarian diet, further reduction calculated in line with SEI food report.
Food waste 0% reduction compared to average UK consumption.
20% reduction in fruit and veg compared to average UK consumption
30% reduction compared to average UK consumption.
Private services Includes hospitals, clinics, postal services, water supply, education, catering etc.
100% of UK typical useWater services Sutton average 171 litres per day
100% of UK typical use.Water services reduced to 87 litres per day
100% of UK typical use apart from specified categories:- Water services reduced to 65 litres per day - Mobile phone bills & eating out reduced by 50%- Private medical treatment reduced to zero
Government and capital investment
100% of UK typical 100% of UK typical 100% of UK typical
Carbon footprint 11.2 9.9 6
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Timber framedwindows
PVC-u framedwindows
Aluminiumframed
windows
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Waste Disposal
Water Extraction
Minerals Extraction
Fossil Fuel Depletion
Pollution to Water:EutrophicationPollution to Water: Ecotoxicity
Pollution to Water: HumanToxicityPollution to Air: PhotochemicalOzone Creation PotentialHuman Toxicity to Air
Ozone Depletion
Acid Deposition
Climate Change
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Reclaimed Steel New Steel
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0
200
400
Recycled GlassSand
Average Sand
Ecop
oint
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RAINWATER COLLECTION
FOUL WATER TREATMENT
SPETIC TANK
RAINWATER STORAGE
HOT WATER
BIO-FUELCHP
ELECTRICITY
PV TO CHARGEELECTRIC CARS
WIND DRIVENVENTILATION WITHHEAT RECOVERY
SOLAR PANELS
Floor area Energy Metered Total 50m2 consumption bills bill
KWh/year £/year £/year
Space Hot Space Hot heating water heating water
UK average 7,000 5,139 £114.80 £84.28 £199.08
New build2,950 3,900 £ 48.38 £63.96 £112.34(predicted)
ZED standard(monitored)
810 2,190 £20.25 £54.75 £75.00
ZED standard bill saving compared with: UK average £124.08New build £ 37.34
Clapham
Wimbledon
KensingtonHolborn
Mitcham
Hampstead
Beddington
VictoriaVictoria London Bridge
London Bridge
BEDZED