Is a net life cycle balance for energy and materials achievable for a zero emission single-family building in Norway?

Torhildur Fjola Kristjansdottir, Aoife Anne Marie Houlihan Wiberg, Inger Andresen, Laurent Georges, Niko Heeren, Clara Good, Helge Brattebø

    Research output: Contribution to journalArticle

    12 Citations (Scopus)

    Abstract

    In this study, the objective is to redesign a previous concept for a single-family Zero greenhouse gas Emission Building (ZEB). The concept is redesigned based on comparing greenhouse gas (GHG) emission loads and compensation from different design solutions applied in Norwegian single-family ZEB pilot buildings and selected sensitivity studies. The objective is to see if a previously developed ZEB model (2011) can be redesigned to achieve a life cycle energy and material emission balance (ZEB-OM), which previously was not achieved. Five different design parameters are evaluated: area efficiency, embodied emissions in the envelope, insulation thickness, heating systems and different roof forms with respect to the photovoltaic area. Embodied emissions reductions were possible in the ground foundation, from around 1 kg CO2/m2 to 0.6 kg CO2/m2 per year. Both models are able to compensate for all operational emissions. The new model is in addition able to compensate for 60% of embodied emissions, whereas the previous model only could compensate for 5%. The new model does not reach the life cycle energy and material balance. The paper presents and discusses different approaches for achieving the ZEB-OM balance. Further concept model optimization is needed.
    Original languageEnglish
    Pages (from-to)457-469
    Number of pages13
    JournalEnergy and Buildings
    Volume168
    Early online date1 Mar 2018
    DOIs
    Publication statusE-pub ahead of print - 1 Mar 2018

    Keywords

    • Embodied emissions;
    • Life cycle
    • Residential;
    • Single-family;
    • Zero emission buildings;
    • Case studies;
    • Pilot buildings

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