Song Tao, artist. So many (Shanghai) buildings are demolishedâ¦a huge building fills the demolished area. The building pace is too fast & it is violent ...
Green growth Towards an eco-efficient built environment in China David Ness University of South Australia & SA Government & Stephen Pullen
Introduction Song Tao, artist So many (Shanghai) buildings are demolished…a huge building fills the demolished area. The building pace is too fast & it is violent Pan Yue, Deputy Minister China can no longer afford to follow the West’s resources hungry model of development…and repeat the mistakes Can economic growth be decoupled from resource consumption & environmental degradation?.........
Aims
To show how China can achieve economic growth with much less resource consumption than the west – Green Growth by extending findings of preliminary Australian research on products to the wider built environment and by applying eco-efficiency principles
The challenge
Ecological footprint China footprint trends…. Shanghai already 7 ha pp But China needs to grow 4x How to do this with 7-10 x efficiency in resource use?
China’s Circular Economy (CE)
Resource extraction - production – consumption – regenerated resources Harmony between economic & eco-systems Efficient use of resources Recycling bldg materials Product & service design to promote reduce, reuse, recycling
Shift to services
‘Leapfrogging’ consumption / waste of mass produced goods towards ‘service economy’ HP computer service example Sustainable product service systems possible solution to China development needs Cultural change needed….
Applying CE to built environment
Can service solutions be applied to buildings? Open building: urban tissue (long life) v infill Urban tissue: eco-efficient infrastructure Support: manage building stock, sharing Infill: S-PSS - procure floor covering services or air comfort services v buying a/c plant
Eco-efficient built environment Construction in Dubai Consider the resource use
Huge consumption of resources associated with construction ‘Green building’ rating may be misleading Consider ecological footprint, materials & energy flow, eco-efficiency Scale up eco-efficiency principles, used in product manufacture, to built environment
Infill: research on sustainable services
Examine procurement options for modular carpet
Purchase, lease to buy, rental
Compare differences in
Emissions & waste Revenue
based on probability of take-back & reuse
Waste saving (PVC) Expected Cumulative PVC to be Redirected (landfill saving) (for 1000 square metres of carpet) 9000
8000
7000
Kilogram s
6000
5000 Purcahse Lease-to-buy Rental
4000
3000
2000
1000
0
1
2
3 Service Period
4
And, remarkably….
Economic benefits Expected cumulative revenue over 5 service periods (for 1000 m2 of carpet) 180000
160000
140000
Revenue ($)
120000
100000 Purchase Lease-to-buy Rental
80000
60000
40000
20000
0
1
2
3 Service Period
4
Indicative findings
After 4 service periods (28 yrs), 7-fold reduction in waste & doubling of revenue Factor 7-10 improvement in resource productivity is possible…..green growth
Next steps… 1. Highlight resource consumption impact of buildings / infrastructure 2. Eco-efficiency measures needed - ‘green ratings’ may be misleading 3. Further research - show how eco-efficiency & service solutions may lead to Factor 7-10 4. Application to developing countries & built environment
Conclusions A revolution is required in our approach to bldgs & infrastructure ! They are highly resource consuming More services with less A major contribution towards Green Growth By Song Tao
