维护或更换建筑窗户:生命周期比较研究

IF 2.1 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Liza Sällström Eriksson, Sofia Lidelöw
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引用次数: 0

摘要

目的在翻新老旧建筑时,节能措施一直都很重要。对于业主来说,窗户干预是一个反复出现的问题。更换窗户通常是为了减少运行供热能耗(OHE),这也是之前许多建筑翻新研究都考虑过的问题。而维护而非更换窗户则较少受到关注,尤其是在亚北极气候条件下的多层住宅建筑中,节约运行供热能耗的潜力巨大。设计/方法/途径 采用以全球升温潜能值(LCA-GWP)和生命周期成本计算(LCC)为重点的生命周期评估(LCA),以 60 年为参考研究期,评估了材料生产、运输和空间供热对各种方案的体现和运行影响。研究结果除少数特定条件外,保持而非更换窗户可将 LC 气候影响和成本降至最低。与投资成本相比,更换窗户所减少的 OHE 使用量对体现的全球升温潜能值 (E-GWP) 的补偿作用更大,也就是说,更换窗户主要是从 LC 气候角度考虑的。LCA-GWP 结果对一些不确定参数的变化更为敏感,而 LCC 结果则更为稳健。原创性/价值研究结果强调了维护比更换更有利于降低成本和实现窗户干预的低碳化,对业主更换窗户的偏好提出了质疑,并强调了将维护活动纳入未来翻新研究的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Maintaining or replacing a building's windows: a comparative life cycle study
PurposeEnergy-efficiency measures have always been important when renovating aging building stock. For property owners, window intervention is a recurring issue. Replacement is common to reduce operational heating energy (OHE) use, something many previous building renovation studies have considered. Maintaining rather than replacing windows has received less attention, especially for multi-residential buildings in a subarctic climate where there is great potential for OHE savings. The objective was to assess the life cycle (LC) climate impact and costs of three window maintenance and replacement options for a 1980s multi-residential building in subarctic Sweden.Design/methodology/approachThe options’ embodied and operational impacts from material production, transportation and space heating were assessed using a life cycle assessment (LCA) focusing on global warming potential (LCA-GWP) and life cycle costing (LCC) with a 60-year reference study period. A sensitivity analysis was used to explore the impact of uncertain parameters on LCA-GWP and LCC outcomes.FindingsMaintaining instead of replacing windows minimized LC climate impact and costs, except under a few specific conditions. The reduced OHE use from window replacement had a larger compensating effect on embodied global warming potential (E-GWP) than investment costs, i.e. replacement was primarily motivated from a LC climate perspective. The LCA-GWP results were more sensitive to changes in some uncertain parameters, while the LCC results were more robust.Originality/valueThe findings highlight the benefits of maintenance over replacement to reduce costs and decarbonize window interventions, challenging property owners’ preference to replace windows and emphasizing the significance of including maintenance activities in future renovation research.
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来源期刊
CiteScore
4.80
自引率
18.20%
发文量
76
期刊介绍: The International Journal of Building Pathology and Adaptation publishes findings on contemporary and original research towards sustaining, maintaining and managing existing buildings. The journal provides an interdisciplinary approach to the study of buildings, their performance and adaptation in order to develop appropriate technical and management solutions. This requires an holistic understanding of the complex interactions between the materials, components, occupants, design and environment, demanding the application and development of methodologies for diagnosis, prognosis and treatment in this multidisciplinary area. With rapid technological developments, a changing climate and more extreme weather, coupled with developing societal demands, the challenges to the professions responsible are complex and varied; solutions need to be rigorously researched and tested to navigate the dynamic context in which today''s buildings are to be sustained. Within this context, the scope and coverage of the journal incorporates the following indicative topics: • Behavioural and human responses • Building defects and prognosis • Building adaptation and retrofit • Building conservation and restoration • Building Information Modelling (BIM) • Building and planning regulations and legislation • Building technology • Conflict avoidance, management and disputes resolution • Digital information and communication technologies • Education and training • Environmental performance • Energy management • Health, safety and welfare issues • Healthy enclosures • Innovations and innovative technologies • Law and practice of dilapidation • Maintenance and refurbishment • Materials testing • Policy formulation and development • Project management • Resilience • Structural considerations • Surveying methodologies and techniques • Sustainability and climate change • Valuation and financial investment
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