Bottom-up characterisation of the Italian residential building stock - Archetype buildings and energy demand
Examensarbete för masterexamen
This work describes the Italian residential building stock by means of archetype buildings representative of the stock. The aggregated description is conducted following a methodology proposed previously that consists of three steps: the segmentation, which defines the archetype buildings; the characterization, which delineates the physical properties of the buildings and the quantification; which establishes the number of archetype buildings of each type representative for a certain group of buildings. Afterwards, the archetypes description is used as input to the building-‐stock model “Energy, Carbon and Cost Assessment of Building Stocks” (ECCABS) to simulate the final energy demand of the building stock. The model results, related to a chosen reference year, are compared with corresponding data given by the statistical databases to validate the building-‐stock description. The Italian residential building stock is represented by 70 archetype buildings, corresponding to 2 building typologies, 7 periods of construction and 5 climate zones. The calculated final energy demand is 417,7 TWh/year for the residential sector, thus showing a deviation which fluctuate between 15% and 28% with respect to the energy demand given by the statistics. A final discussion of the results and an assessment of suitability of the model have been carried out. In addition a sensitivity analysis has been accomplished to evaluate the most influential variables of the model, which are: HW, SW, Trmin, U-‐values. This work contributes to a European building stock database, and will be used as a basis to assess the effects of measures related to the energy efficiency and energy savings.
Energiteknik , Energy Engineering