A contribution to building lifecycle analysis: embodied energy analysis of mechanical installations for a typical urban Greek dwelling Life Cycle Analysis (LCA) is an important tool nowadays, in order to quantitatively assess the energy consumption of buildings and their impact to the environment during their life cycle. The Embodied Energy (EE) of a building along with its operational energy (OE), are important LCA parameters. Moving towards nearly zero energy buildings, the EE becomes increasingly important parameter in their overall energy balance. To account for the EE, the first step is to determine the constitutive materials of the various building components, to estimate the percent contribution of these materials in terms of mass and identify the dominant ones. In this context, this paper focuses on the main constitutive materials used in the main mechanical installations (space heating, hot water and hydraulic installations) of a typical urban Greek dwelling. The methodology for recording these materials is presented and results for their percent mass contribution are provided. Their percent contributions in terms of EE and Embodied CO2 (ECO2), normalized per unit floor area, are also presented based on EE and ECO2 coefficients from the international literature. The ratio of the estimated EE to a benchmark OE value for the building under consideration is found comparable to data from the literature. This gives confidence that the results are representative and guides the continuing of this effort. 3rd International Exergy, Life Cycle Assessment and Sustainability Workshop & Symposium (ELCAS-3), Nisyros, Greece, July 7-9, 2013. elcasnet/symposium
Posted on: Wed, 24 Jul 2013 11:25:58 +0000
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