Evaluation of energy renovation strategies for 12 historic building types using LCC optimization
2019 (English)In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 197, p. 156-170Article in journal (Refereed) Published
Abstract [en]
The life cycle cost (LCC)optimization is a vital method when performing building energy renovation. The present paper provides an evaluation of cost-optimal energy renovation strategies for historic buildings using LCC optimization software OPERA-MILP. The evaluation is performed based on preset targets depending on LCC (LCC optimum)and energy use (decrease by 50%), where the environmental performance is also addressed. Twelve building types, which are typical of the historic building stock in Visby, Sweden, are used as the study object. The results show possible decreases of 12–38% in LCC when targeting LCC optimum. When targeting a 50% decrease in energy use, the LCC is decreased in 21 of 26 cases compared to before energy renovation. Cost-efficient EEMs on the building envelope are characterized by low renovation costs and additional insulation of building components with poor thermal properties. Furthermore, the environmental performance from the energy renovations is highly dependent on the chosen energy system boundary.
Place, publisher, year, edition, pages
Elsevier Ltd , 2019. Vol. 197, p. 156-170
Keywords [en]
Energy renovation, Environmental performance, Historic buildings, LCC optimization, OPERA-MILP, Environmental management, Integer programming, Life cycle, Thermal insulation, Buildings
National Category
Energy Systems
Research subject
Sustainable Urban Development
Identifiers
URN: urn:nbn:se:hig:diva-30552DOI: 10.1016/j.enbuild.2019.05.017ISI: 000472699300014Scopus ID: 2-s2.0-85067934917OAI: oai:DiVA.org:hig-30552DiVA, id: diva2:1345015
Funder
Swedish Energy Agency2019-08-222019-08-222021-02-17Bibliographically approved