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The analysis is in two parts which are then added together to produce an overall figure which is termed the ‘Carbon Profile’:
- operational carbon emissions
- embodied carbon emissions.
Embodied carbon emissions relate to the amount of carbon dioxide emitted into the atmosphere from creating and maintaining the materials that form the building e.g. the carbon dioxide released from the baking of bricks or smelting or iron. In the Carbon Profiling Model these emissions are measured as Embodied Carbon Efficiency (ECE), measured as kg of CO2/m2/year.
Occupational Carbon Emissions relate to the amount of Carbon Dioxide emitted into the atmosphere from the direct use of energy to run the building e.g. the heating or electricity used by the building over the year. In the Carbon Profiling Model these emissions are measured in BER’s (Building Emission Rate) in kg of CO2/m2/year.
The purpose of Carbon Profiling is to provide a method of analyzing and comparing both operational and embodied carbon emissions at the same time. With this information it is then possible to allocate a projects resources in such a way to minimize the total amount of Carbon Dioxide emitted into the atmosphere through the use of a given piece of space.
A secondary benefit is that having quantified the Carbon Profiling of different buildings it is then possible to make comparisons and rank buildings in term of their performance. This allows investors and occupiers to identify which building are good and bad carbon investments.
- ‘Carbon Profiling’ was published in The Architects Journal on the 26.03.09