Balancing building conservation with energy conservation : towards differentiated energy renovation strategies in historic buildning stocks av Petra Eriksson

Bindning: Häftat band

Bokförlag: Acta Universitatis Gothoburgensis
ISBN: 9789179630720
Bokserie: Gothenburg studies in Conservation

Omfång: 103 s.
Språk: Engelska
Utgivningsdatum: 2021-06-16

Förlagets information

Balancing building conservation with energy conservation is challenging. The overall aim of this thesis is to bridge the perceived conflict of reaching climate and energy goals on the one hand and the goals of a sustainable management of historic building stocks on the other hand.

Balancing building conservation with energy conservation is challenging. The overall aim of this thesis is to bridge the perceived conflict of reaching climate and energy goals on the one hand and the goals of a sustainable management of historic building stocks on the other hand. Historic buildings constitute an important representation of the built heritage, and make up a large part of the total building stock. Within the historic building stock, there are opportunities for energy efficiency improvements that can, and should, be undertaken in order to contribute to climate and energy goals. However, changes due to energy improvement measures need to be made without damaging or destroying the heritage values that are embodied in, and represented by, historic buildings. For this to happen, heritage values need to be identified, acknowledged and articulated in a systematic and transparent manner in order to be balanced with other interests when assessing energy saving potential in relation to building conservation requirements. Three areas are of importance to move the issue of balancing building conservation with energy conservation from building level to building stock level. These are 1) adapted decision support processes for historic building stocks, 2) methods to integrate aspects of heritage values for decision support processes, and 3) building stock analysis aiming at developing differentiated energy renovation strategies for historic building stocks. Decision-support processes have been developed and tested for buildings and building stocks. On building level, the proposed process allows for interaction between a quantitative assessment of the techno-economic optimisation and a qualitative assessment of vulnerability and risks. On building stock level, categorisation to produce archetype buildings, restrictions with regard to heritage values and extrapolation of results from the optimisation are added to the process. The building stock analysis visualises the relationship between different segments of a selected historic building stock and thereby shows the need for differentiated energy renovation goals and strategies that reflect the diversity of the building stocks. The results provide not only a method to develop differentiated energy renovation strategies, but also argue for the need for coherent and coordinated information about the historic building stock. As a conclusion, my thesis has shown how to support informed decisions that balance energy conservation with building conservation for both individual buildings and building stocks. Further development is needed towards standardised decision support processes for historic building stocks that include the trade-off between preservation of heritage values and energy efficiency. Parts of work Paper I, Eriksson, Petra, Anna Donarelli, Endrik Arumägi, Fredrik Ståhl and Tor Broström (2013) ‘Energy efficient historic stone houses – a case study highlighting possibilities and risks’, proceeding in: Sustainable BuildingConference Munich (sb13 munich), Implementing Sustainability – Barriers and chances. Munich, April 24-26, 2013. Paper II, Eriksson, Petra, Carsten Hermann, Sára Hrabovszky-Horváth and Dennis Rodwell (2014) ’EFFESUS methodology for assessing the impacts of energyrelated retrofit measures on heritage significance’, The Historic Environment 5(2), pp. 132 – 149. visa artikel Paper III, Broström, Tor, Petra Eriksson, Linn Liu, Patrik Rohdin, Fredrik Ståhl and Bahram Moshfegh (2014) ’A method to assess the potential for and consequences of energy retrofits in Swedish historic buildings’, The Historic Environment 5(2), pp. 150 – 166. visa artikel Paper IV, Eriksson, Petra, Vlatko Milić and Tor Broström (2020) ’Balancing preservation and energy efficiency in building stocks’, International Journal of Building Pathology and Adaptation 38(2), pp. 356 – 373. visa artikel Paper V, Eriksson, Petra and Tim Johansson, ‘Towards differentiated energy renovation strategies for heritage classified multifamily building stocks’, Manuscript 2021.

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