Life Cycle Assessment of embodied and operational energy for a passive housing block in Austria

Kovačić, Iva; Reisinger, Julia; Honic, Meliha

doi:10.1016/j.rser.2017.07.058

Cited by 43 publications

(15 citation statements)

References 34 publications

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“…Therefore, a house designed and insulated according to the sustainable concepts of 'passive' or 'zero energy' (a house that uses a lot of EPS insulation) means investing a great amount of energy during the construction stage. In turn, over a period of 80 years, such a house would win merely 7% of energy savings compared to a house with outdated insulation standards, as a recent lifecycle assessment analysis shows (Kovacic, 2018). The price of this modest energy saving is increased polystyrene waste, and inevitable eventual contamination of land and the oceans.…”

Section: Energy Efficiencymentioning

confidence: 99%

Design Transactions

2019

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in conversation with Anja Jonkhans BIOGRAPHIESDesign Transactions asks what the future of building culture will be. It asks how new, shared computational platforms are changing our disciplines, examining how the digitisation of tools affects the way architecture is conceived designed and made. Questions arise as we enter a new era of advanced modelling, informed by new concepts of Big Data computing, cloud-based collaboration and steered robotic fabrication: What might collaboration look like in the future? How can knowledge across the design change be interfaced and fed back for a more informed and materially-sensitive practice? What is the future for automation in architecture?Today, computational design is ubiquitous in building practice; the tools of design, analysis, specification and manufacture are now primarily digital. While tools vary in sophistication and programmability, they share a common digital foundation. This makes them fundamentally open to interfacing, which, in turn, has led to the conception of a digital chain via which information is communicated, connected and extended across industry partnerships. This highly interdisciplinary vision has framed building practice for the last 15 years .Yet, despite this, the building industry remains unable to reap the benefits of technological progress. Practice remains fractured, and issues of ownership, disciplinebased silo-thinking and legal proprietary boundaries continue to obstruct meaningful sharing and innovation. This paralysis has significant consequences, including the inability to effect the urgently-needed restructuring of building culture, which has contributed to a profound loss of productivity. The construction industry is, famously, one of the least efficient industries, having hit a plateau in production growth over the last 20 years. Where construction-related spending accounts for 13%

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Section: Energy Efficiencymentioning

confidence: 99%

Design Transactions

2019

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“…This approach allows one to design optimal passive buildings in different operating conditions. Passive buildings were also investigated by Kovacic et al [158] focusing on the energy required for the manufacturing processes of several materials used for the construction of such buildings. The problem was analyzed also considering environmental aspects.…”

Section: Building Efficiencymentioning

confidence: 99%

Recent Advances in the Analysis of Sustainable Energy Systems

et al. 2018

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EU energy policy is more and more promoting a resilient, efficient and sustainable energy system. Several agreements have been signed in the last few months that set ambitious goals in terms of energy efficiency and emission reductions and to reduce the energy consumption in buildings. These actions are expected to fulfill the goals negotiated at the Paris Agreement in 2015. The successful development of this ambitious energy policy needs to be supported by scientific knowledge: a huge effort must be made in order to develop more efficient energy conversion technologies based both on renewables and fossil fuels. Similarly, researchers are also expected to work on the integration of conventional and novel systems, also taking into account the needs for the management of the novel energy systems in terms of energy storage and devices management. Therefore, a multi-disciplinary approach is required in order to achieve these goals. To ensure that the scientists belonging to the different disciplines are aware of the scientific progress in the other research areas, specific Conferences are periodically organized. One of the most popular conferences in this area is the Sustainable Development of Energy, Water and Environment Systems (SDEWES) Series Conference. The 12th Sustainable Development of Energy, Water and Environment Systems Conference was recently held in Dubrovnik, Croatia. The present Special Issue of Energies, specifically dedicated to the 12th SDEWES Conference, is focused on five main fields: energy policy and energy efficiency in smart energy systems, polygeneration and district heating, advanced combustion techniques and fuels, biomass and building efficiency.

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“…Only around 1% of the European building stock is renovated each year, while almost 75% of the building stock in Europe is energy-inefficient [3]. Moreover, the current energy efficiency strategies result in an increasing demand for building materials [12,13].…”

Section: Introduction 1backgroundmentioning

confidence: 99%

Personal Heating in Dwellings as an Innovative, Energy-Sufficient Heating Practice: A Case Study Research

2021

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Despite the efforts to improve the energy efficiency of buildings, the actual energy consumption decreased much less than expected in recent years. Therefore, energy sufficiency is gaining attention as a complementary approach to energy efficiency. It aims to reduce the actual energy consumption of buildings by providing thermal comfort to residents in a sufficient way. This demands for alternative heating practices, such as the application of personal heating systems. Although a review of past studies shows that, in office buildings, thermal comfort can be provided with less energy by using personal heating systems, the application in a residential context is much less explored. Our hypothesis is that an innovative, energy-sufficient personal heating practice also has potential to reduce the overall energy consumption in dwellings. Therefore, this paper presents the results of a one-week case study on personal heating as an energy-sufficient heating practice in three dwellings. During the case study, the ambient temperature was reduced to 18 °C, and residents were allowed to use active and passive personal heating systems to make themselves as comfortable as possible. They were also asked to evaluate their thermal sensation and thermal comfort. The results show that, despite a lower indoor temperature, residents are able to achieve thermal comfort by using personal heating at the locations where they effectively reside. Additionally, a significant energy saving potential was found. The case study proved our hypothesis, leading to the conclusion that an innovative, sufficient personal heating practice in dwellings can be a supplementary step to reduce the energy consumption to meet the global challenges.

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Life Cycle Assessment of embodied and operational energy for a passive housing block in Austria

Cited by 43 publications

References 34 publications

Design Transactions

Design Transactions

Recent Advances in the Analysis of Sustainable Energy Systems

Personal Heating in Dwellings as an Innovative, Energy-Sufficient Heating Practice: A Case Study Research

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