A Method to Assess the Potential for and Consequences of Energy Retrofits in Swedish Historic Buildings

Broström, Tor; Eriksson, Petra; Liu, Linn; Rohdin, Patrik; Ståhl, Fredrik; Moshfegh, Bahram

doi:10.1179/1756750514z.00000000055

Cited by 42 publications

(51 citation statements)

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“…As the pressure for improved energy performance increases, the balance between energy conservation and building conservation must be carefully considered (Broström et al, 2014). Questions such as "What would be the consequences for listed buildings of implementing European and national energy targets?"…”

Section: The Swedish Listed Buildingsmentioning

confidence: 99%

“…In addition, measures which can improve building's energy use also include optimization of the performance of the building's envelope and intelligent operation and management of HVAC (Heating, Ventilation and Air Conditioning) system, replacing old door and windows with energy-efficient ones and improving the building's air tightness, etc. (Aste et al, 2012;Broström et al, 2014;Jung et al, 2013;Liu et al, 2014;Xu et al, 2012). …”

Section: Energy Efficiency Measures (Eems) Of Buildingsmentioning

confidence: 99%

“…and "To what extent would policies for building conservation have an effect on the potential for energy savings" are general current issues around listed building stock. According to (Broström et al, 2014), the risks to assessing cultural heritage are stated together with the fact that these considerations may have a considerable impact on the actual potential for improving energy performance. Clearly there is a need for a systematic approach where techno-economic and global environmental considerations can be weighed against the impact on heritage values.…”

Section: The Swedish Listed Buildingsmentioning

confidence: 99%

“…The listed building sector constitutes an important part of the country's built heritage. The Swedish heritage buildings generally have worse energy performance than other buildings, and thus account for a significant part of society's energy use (Broström et al, 2014;Mattsson, 2011).…”

Section: The Swedish Listed Buildingsmentioning

confidence: 99%

“…OPERA-MILP is based on mixed integer linear programming (MILP) and was first developed at the Division of Energy Systems in Linköping University during the 1980s. The software has been used for studying both multi-family buildings (Gluch & Gustafsson, 2015;Gustafsson, 1990Gustafsson, , 2000Gustafsson, , 2001, and also one heritage single-family building (Broström et al, 2014).…”

Section: Life Cycle Cost Optimization -Opera-milpmentioning

confidence: 99%

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A systematic approach for major renovation of residential buildings

Liu

2017

Linköping Studies in Science and Technology. Dissertations

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In Sweden, buildings are responsible for about 40 % of total energy use and about 10 % of total CO 2 emissions. Today more than 60 % of existing Swedish residential buildings are over 40 years old and are in need of major renovation. In addition, 15 % of all multi-family buildings and 27 % of all single-family houses were built before 1945. The increased energy use and threat from CO 2 emissions of the building sector create a need for energy efficiency. The important role that renovation of residential buildings will play in reducing the total energy used by the Swedish building sector as well as in reducing primary energy use and CO 2 emissions on both the national and global levels has been the impetus for the studies included in this thesis.The aim of the current research is to develop a methodology from a system perspective which can be used to analyze the energy use, optimal life cycle cost (LCC), energy efficiency measure (EEM) package, indoor environment, CO 2 emissions, and primary energy use of a building or a community during major renovation. The developed methodology accomplished at three different levels, i.e. building level, cluster level and district level. The methodology considers both energy efficiency and economic viability during building renovation and will also play an important role in overall urban planning. The studied buildings include both nonlisted and listed residential buildings and the tools used include building energy simulation (BES), survey, technical measurements, LCC optimization and building categorization.The results show that the combination of BES, technical measurements and surveys provides a holistic approach for evaluation of energy use and indoor environment of the studied residential buildings. The results from the current study also show that the 2020 energy target, i.e., reduction of energy use by 20 %, for the building sector can be achieved by all the studied building types and that the total LCC of these buildings are below the cost-optimal point. In comparison, the 2050 energy target, i.e., reduction of energy use by 50 %, for the building sector may be achieved by the non-listed buildings, but when the constraints relevant to listed buildings are added the cost-optimality changes as some EEMs in direct conflict with the building's heritage value may not be implemented.The investigation of primary energy use and CO 2 emissions by the residential buildings show that the higher the energy saving, the lower the primary energy use becomes, and vice versa. With the same energy saving, the heating system with higher primary energy factor results in higher primary energy use. From a CO 2 emissions point of view, EEM packages proposed to help buildings connected to a CHP based district heating system, to reduce the energy use or LCC are not consistently effective. Since these EEM packages will reduce district heating demand, the electricity produced in the CHP plant will also decrease. When the biomass is considered a limited resource, measures such as investm...

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Section: The Swedish Listed Buildingsmentioning

confidence: 99%