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Concrete vs. wood in buildings - An energy system approach

Jonas Nässén (Institutionen för energi och miljö, Fysisk resursteori) ; Fredrik Hedenus (Institutionen för energi och miljö, Fysisk resursteori) ; Sten Karlsson (Institutionen för energi och miljö, Fysisk resursteori) ; John Holmberg (Institutionen för energi och miljö, Fysisk resursteori)
Building and Environment (0360-1323). Vol. 51 (2012), p. 361-369.
[Artikel, refereegranskad vetenskaplig]

Substitution between energy and CO2 intensive materials is a potentially important climate mitigation strategy. We compare buildings with concrete frames and wooden frames concerning their life-time carbon dioxide emissions as well as their total material, energy and carbon dioxide costs. By using consistent energy systems scenarios meeting stringent targets for atmospheric CO2 concentrations we investigate the impact of higher energy and carbon dioxide prices as well as of the availability of carbon capture and storage (CCS) technologies. We find that wooden frames cause lower carbon dioxide emissions given the prevailing energy system, but concrete frames obtain about the same emissions as the wood frame in a system where CCS is not used for wood incineration in the demolishing phase. The net present costs for the different buildings are also affected by the future energy supply system, even though the impact is small, especially compared to the total construction cost. We conclude that it is unclear whether wood framed buildings will be a cost-effective carbon mitigation option and that further analyses of costs should be performed before prescriptive materials policies are enforced in the buildings sector.

Nyckelord: Building materials, Materials substitution, Climate policy, CO2, emissions, Carbon capture and storage, greenhouse-gas, life-cycle, construction, costs, transport, balances

Denna post skapades 2012-04-12. Senast ändrad 2016-04-28.
CPL Pubid: 156569


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Institutioner (Chalmers)

Institutionen för energi och miljö, Fysisk resursteori



Chalmers infrastruktur