Adapting the city
Building & InfrastructureDr Tim WhitleyAssociate Director, Arup
Sustainable Building RetrofitAdaptation and Mitigation
Climate Change Impacts
Lack of resilience
High energy bills
Summer overheating
Customer discomfort 9.06OC
9.67OC
10.1OC
Adaptation vs Mitigation and Retrofit
Mitigation AdaptationReduce energy use Increased summer temperatures
Reduce water use Increased flood risk
Lower carbon footprint More extreme weather events
ChallengePotential increased cooling to cope with increased summer temperatures vs reducing energy use
Bruntwood– Adaptation and Mitigation
Three packages
1. Behavioural
2. Fabric
3. Services
Two categories
1. Suite related (impact on customers’ electricity bills)
2. Building related (impact on service charge energy costs)
Cost-benefit Analysis
Key Intervention examples
Envelope and environmental system strategyHigh performance glazing
Solar shading through glazing and blinds
Insulation to roof and spandrel panels
Expose soffits for passive/night time cooling
Install high efficiency ventilation and conditioning systems
Maximise daylight opportunities
20 40 60 80 120 140 160 180100 200 220
Total Cooling W/m2
(perimeter areas)
Coo
ling
Loa
ds
Occupants
BCO Guide
Machines
Spare
Lighting
3m Continuous glazing
Clear double glazing + internal blind
2m1m0.5m
3m
High performance 66/34 glazing + internal blind
2m1m
4m
.5
Blind in ventilated cavity
4m3m2m1m.5
Façade Mitigation and Adaptation
Key Intervention examples
Control & monitoring systemsEnhanced BMS, increased controls, smaller zones
Lighting control zones, low energy lighting
Extensive sub-metering and real time displays
Comprehensive behaviour change strategyPrompt energy conscious behaviour change
Overall Building Carbon savings
40-50% Savings
Adapting the city
