6533b839fe1ef96bd12a5cfd
RESEARCH PRODUCT
Multi-objective optimization of building life cycle performance. A housing renovation case study in Northern Europe
Maurizio CelluraHarpa BirgisdottirKai KanafaniElenora Riva SanseverinoKim Bjarne WittchenFrancesco MontanaSonia Longosubject
Architectural engineeringbuilding renovationLow-energy buildings020209 energylcsh:TJ807-830Geography Planning and Developmentlcsh:Renewable energy sources02 engineering and technology010501 environmental sciencesManagement Monitoring Policy and Law01 natural sciencesMulti-objective optimizationLife cycle assessmentlife cycle assessment0202 electrical engineering electronic engineering information engineeringBuilding life cycleCellulose insulationRoofLife-cycle assessmentlcsh:Environmental sciences0105 earth and related environmental scienceslcsh:GE1-350Settore ING-IND/11 - Fisica Tecnica Ambientalelow-energy buildingBuilding renovation Embodied Life cycle assessment Low-energy building Multiobjective optimizationRenewable Energy Sustainability and the Environmentlcsh:Environmental effects of industries and plantsEmbodiedSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaMulti-objective optimizationGlazinglcsh:TD194-195multi-objective optimizationGreenhouse gasembodiedEnvironmental scienceEmbodied energyBuilding renovationdescription
While the operational energy use of buildings is often regulated in current energy saving policies, their embodied greenhouse gas emissions still have a considerable mitigation potential. The study aims at developing a multi-objective optimization method for design and renovation of buildings incorporating the operational and embodied energy demands, global warming potential, and costs as objective functions. The optimization method was tested on the renovation of an apartment building in Denmark, mainly focusing envelope improvements as roof and exterior wall insulation and windows. Cellulose insulation has been the predominant result, together with fiber cement or aluminum-based cladding and 2-layered glazing. The annual energy demand has been reduced from 166.4 to a range between 76.5 and 83.7 kWh/(m2 y) in the optimal solutions. The fact that the legal requirements of 70 kWh/(m2 y) are nearly met without building service improvements indicates that energy requirements can be fulfilled without compromising greenhouse gas emissions and cost. Since the method relies on standard national performance reporting tools, the authors believe that this study is a preliminary step towards more cost-efficient and low-carbon building renovations by utilizing multi-optimization techniques.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-09-22 |