innovate green office engineering the future – the uks greenest office? doug king principal, king...
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Innovate Green OfficeEngineering the future –The UK’s greenest office?
Doug King Principal, King Shaw Associates
Consulting Engineers
Completed: 2002
Size: 22,000 ft²
BREEAM: None
Cost: £64/ft²
Innovate Office, Sherwood Park
Innovate Green Office
Completed: 2007
Size: 46,000 ft²
BREEAM: Excellent 87.55%
Cost: £135/ft²
Innovate Green Office
Passive designSuper insulationThermal massTermodeckHeat recoveryNight coolingMixed mode ventilationCHP tri-generationVacuum drainageRainwater WC flushingDaylight designHigh efficiency lightingLighting control
Ambitions
A Step Change:
To prototype a commercial sustainable office
To create a pleasant working environment
To meet investment criteria for institutional funding
To significantly reduce life cycle/operating costs
To significantly reduce waste during construction
To maximise the use of recycled and recyclable products
Optimised Plan
Typical Building CO2 Emissions
Lighting17%
Electrical Equipment
13%
Cooking6%
Water Heating7%
Air Conditioning
13%
Space Heating44%
0.15 W/m²k
1.5 W/m²k 0.15 W/m²k
1.62 W/m²k
0.15 W/m²k
0.15 W/m²k
Insulation
Thermal Mass
Typical Building CO2 Emissions
Lighting29%
Electrical Equipment
22%
Cooking10%
Water Heating10%Air
Conditioning13%
Space Heating12%
Daylight
Orientation and Shading
Orientation and Shading
daylight availability – office hours, 4.5% df
Office Daylight Availability
Resource Conservation
Resource Conservation
Energy Conservation
Energy Conservation
Energy Conservation
Energy Conservation
Energy Conservation
Water Conservation
Carbon Index Benchmarks
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
Typical Good Practice Typical Good Practice Innovate GreenOffice
Typical Good Practice Typical Good Practice
Prestige Airconditioned Normal Airconditioned Natural Ventilation Cellular Natural Ventilation Open Plan
ECON19 Category
CI
kg/m
2
Lighting
Humidification
Fans & Pumps
Absorption Refrigeration
Electric Refrigeration
Heating & Hot Water
Carbon Index
80% lower CO2 emission than a conventional office
80% lower mains water consumption than a conventional office
75% lower sewage discharge than a conventional office
80% reduction in construction waste sent to landfill
Results
Typical energy cost for a developer specification office building in 2002 = £1.42 / square foot
Actual energy cost for Innovate Office, Sherwood Park in 2002 = £1.40 / square foot
Typical energy cost for a developer specification office building in 2007 = £2.24 / square foot
Predicted energy cost for Innovate Green Office in 2007 = £0.65 / square foot
Return on Investment