A New Metric for Net- Zero Carbon Buildings
2007 (English)In: PROCEEDINGS OF THE ENERGY SUSTAINABILITY CONFERENCE 2007, 2007, 219-224 p.Conference paper (Refereed)
In this study, a new carbon equivalency metric was developed in order to quantify the compound carbon emissions for which buildings are responsible in the built environment. This metric first analyses the rationale about the management of the exergy balance among the supply and demand that is involved in satisfying building power and energy loads. Then using the degree of the rationale found, direct carbon emissions from the building and avoidable secondary carbon emissions for which the building is responsible due to exergy mismatches are calculated. Based on this metric, a net-zero carbon building definition was introduced and its advantages for quantifying the actual impact of buildings on global sustainability were discussed in comparison to net-zero energy building and carbon neutral building concepts. A case study for an example net-zero energy building is presented, which reveals that the new carbon equivalency metric can indicate whether the building is actually environmentally neutral or not. The results show that the example building has negative impacts on the environment and global sustainability in terms of carbon emissions even though it is rated as a net-zero building. This paper also discusses that although another new, net-zero exergy building definition may reduce the shortcomings of the net-zero building definition, the net-zero carbon building metric may accurately rate the environmental impact of buildings. Beyond carbon emissions from buildings, the same metric can be used for any variety of greenhouse emissions and sectors.
Place, publisher, year, edition, pages
2007. 219-224 p.
IdentifiersURN: urn:nbn:se:kth:diva-42464DOI: 10.1115/ES2007-36263ISI: 000254287400026OAI: oai:DiVA.org:kth-42464DiVA: diva2:447130
ASME 2007 Energy Sustainability Conference (ES2007) July 27–30, 2007 , Long Beach, California, USA
QC 201110122011-10-102011-10-102011-10-14Bibliographically approved