| 1. |
- Somanath, Sanjay, 1994, et al.
(författare)
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AI-baserad segementering av fasader för att optimera renovering i en större skala
- 2021
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Ingår i: Bygg och teknik. - 0281-658X. ; 2021:2, s. 26-29
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Hur kan vi på ett automatiskt sätt skapa mer detaljerade 3D modeller av byggnader i digitala tvillingar och förbättra indata för att beräkna energibesparingspotentialer i befintliga byggnader? I en pilotstudie har vi undersökt hur maskininlärning kan användas för att extrahera information om fönstersättning och storlek i befintliga byggnader. Vi har utvecklat en modell som har “tränats” att känna igen och segmenterar fönster från bilder med byggnadsfasader och på så sätt skapa digitala och mer detaljerade data för befintliga byggnader. Vårt långsiktiga mål är att utveckla en helautomatisk metod för analyser av renoveringspotentialer för byggnader och fastighetsportföljer.
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| 2. |
- Galimshina, Alina, 1993, et al.
(författare)
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What is the optimal robust environmental and cost-effective solution for building renovation? Not the usual one
- 2021
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Ingår i: Energy and Buildings. - : Elsevier BV. - 0378-7788. ; 251
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Tidskriftsartikel (refereegranskat)abstract
- Buildings are responsible for a large share of CO2 emissions in the world. Building renovation is crucial to decrease the environmental impact and meet the United Nations climate action goals. However, due to buildings’ long service lives, there are many uncertainties that might cause a deviation in the results of a predicted retrofit outcome. In this paper, we determine climate-friendly and cost-effective renovation scenarios for two typical buildings with low and high energy performance in Switzerland using a methodology of robust optmization. First, we create an integrated model for life cycle assessment (LCA) and life cycle cost analysis (LCCA). Second, we define possible renovation measures and possible levels of renovation. Third, we identify and describe the uncertain parameters related to the production, replacement and dismantling of building elements as well as the operational energy use in LCCA and LCA. Afterwards, we carry out a robust multi-objective optimization to identify optimal renovation solutions. The results show that the replacement of the heating system in the building retrofit process is crucial to decrease the environmental impact. They also show that for a building with already good energy performance, the investments are not paid off by the operational savings. The optimal solution for the building with low energy performance includes the building envelope renovation in combination with the heating system replacement. For both buildings, the optimal robust cost-effective and climate-friendly solution is different from the deep renovation practice promoted to decrease the energy consumption of a building.
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| 3. |
- Hollberg, Alexander, 1985, et al.
(författare)
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Review of visualising LCA results in the design process of buildings
- 2021
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Ingår i: Building and Environment. - : Elsevier BV. - 0360-1323. ; 190
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Forskningsöversikt (refereegranskat)abstract
- Life Cycle Assessment (LCA) is increasingly used for decision-making in the design process of buildings and neighbourhoods. Therefore, visualisation of LCA results to support interpretation and decision-making becomes more important. The number of building LCA tools and the published literature has increased substantially in recent years. Most of them include some type of visualisation. However, there are currently no clear guidelines and no harmonised way of presenting LCA results. In this paper, we review the current state of the art in visualising LCA results to provide a structured overview. Furthermore, we discuss recent and potential future developments. The review results show a great variety in visualisation options. By matching them with common LCA goals we provide a structured basis for future developments. Case studies combining different kinds of visualisations within the design environment, interactive dashboards, and immersive technologies, such as virtual reality, show a big potential for facilitating the interpretation of LCA results and collaborative design processes. The overview and recommendations presented in this paper provide a basis for future development of intuitive and design-integrated visualisation of LCA results to support decision-making.
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| 4. |
- Somanath, Sanjay, 1994, et al.
(författare)
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A user interaction model for digital tools to support socially sustainable neighbourhood planning
- 2021
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Most digital tools developed for architects and urban planners cater to the environmental and economic dimensions of SD, leaving out the social dimension. SoSu as a dimension of SD lacks the analytical ability available to the economic and environmental dimensions in addressing the environmental and economic impacts of design decisions enabling a shorter feedback loop in the early design stage. In this paper, we implement a seven-step conceptual analysis methodology framework to explore (a) – the theoretical background of SoSu and (b) – to develop a user interaction model that can serve as a blueprint to develop digital tools to promote SoSu in the early stages of neighbourhood design. The theoretical background is developed in the first three steps – Mapping selected data sources, extensive reading and categorising selected data, and identifying and naming concepts. The model development further builds on the results of part (a) and involves deconstructing and categorising the concepts, integrating concepts and synthesis and re-synthesis of the concept. Finally, the seventh step consists of validating the conceptual framework through public discussion. We identify architects and urban planners as the target user group and the neighbourhood scale to apply SoSu concepts in the built environment and propose pre-requisites following a four-step user interaction model to develop digital tools to promote SoSu.
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| 5. |
- Somanath, Sanjay, 1994, et al.
(författare)
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Towards digitalisation of socially sustainable neighbourhood design
- 2021
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Ingår i: Local Environment. - : Informa UK Limited. - 1354-9839 .- 1469-6711. ; 26:6, s. 770-789
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Tidskriftsartikel (refereegranskat)abstract
- Digital tools for performance-assessment are commonly used to shorten the feedback loop in testing designs for buildings and neighbourhoods. However, these tools do not extend to the social dimension in the same way as the economic and environmental dimensions. This paper aims to contribute to the development of digital tools to design socially sustainable neighbourhoods. We analyse 115 academic articles to establish a theoretical understanding of Social Sustainability (SoSu). Based on these results, we propose a digital user-interaction model to operationalise SoSu in the digital design process of buildings. In the literature, we observe a lack of consensus on the theoretical discussion on SoSu. Several extrinsic and intrinsic factors are identified contributing to this fuzziness; the dependency on stakeholder value systems, the qualitative nature of social indicators, and comparison to environmental sustainability being the most common. Still, we distinguish two overarching categories, social equity and social capital, that are further divided into sub-themes. Having mapped the categories and hierarchies of social themes, we propose a user-interaction model that incorporates these findings into a digital environment. The user-interaction model creates a guided decision-making framework for architects and urban planners by enabling stakeholders to make conscious and informed decisions grounded in theory.
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