A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Building retrofit addressing occupancy: An integrated cost and environmental life-cycle analysis
HighlightsRetrofit of historic buildings for contemporary residential or office use.How building retrofit strategies in Southern Europe depend on house occupancy.Insulation thickness thresholds depend on occupancy level.Higher LC impact savings due to retrofit for higher occupancy.Additional insulation leads to increased benefits in higher comfort conditions.
AbstractBuilding retrofit can lead to important savings in operating cost and environmental impacts; however, the actual savings depend on future house occupancy, which is generally not taken into account. The goal of this article is to carry out an integrated (cost, environmental and energy) life-cycle (LC) assessment of alternative roof and exterior-wall insulation retrofit strategies for a single-family house addressing occupancy. Alternative scenarios were defined by type of use (residential and office) and occupancy level (low and high), set-points and family size. LC impacts were calculated for five environmental categories and non-renewable primary energy showing that an insulation level threshold (where total LC impacts are minimized) can be identified for exterior-wall retrofit (60–70mm for all scenarios) and roof retrofit (90–100mm for low residential occupancy; 80–90mm for high residential occupancy and office use). Recommendations can be provided to enhance the retrofit performance of historic buildings in Southern Europe, depending on their use and occupancy level. Highly-insulated retrofit is more beneficial for high occupancy levels with higher thermal comfort conditions. No benefit is derived from incorporating insulation for lower comfort conditions. Interior insulation on exterior walls presents higher savings than exterior insulation.
Building retrofit addressing occupancy: An integrated cost and environmental life-cycle analysis
HighlightsRetrofit of historic buildings for contemporary residential or office use.How building retrofit strategies in Southern Europe depend on house occupancy.Insulation thickness thresholds depend on occupancy level.Higher LC impact savings due to retrofit for higher occupancy.Additional insulation leads to increased benefits in higher comfort conditions.
AbstractBuilding retrofit can lead to important savings in operating cost and environmental impacts; however, the actual savings depend on future house occupancy, which is generally not taken into account. The goal of this article is to carry out an integrated (cost, environmental and energy) life-cycle (LC) assessment of alternative roof and exterior-wall insulation retrofit strategies for a single-family house addressing occupancy. Alternative scenarios were defined by type of use (residential and office) and occupancy level (low and high), set-points and family size. LC impacts were calculated for five environmental categories and non-renewable primary energy showing that an insulation level threshold (where total LC impacts are minimized) can be identified for exterior-wall retrofit (60–70mm for all scenarios) and roof retrofit (90–100mm for low residential occupancy; 80–90mm for high residential occupancy and office use). Recommendations can be provided to enhance the retrofit performance of historic buildings in Southern Europe, depending on their use and occupancy level. Highly-insulated retrofit is more beneficial for high occupancy levels with higher thermal comfort conditions. No benefit is derived from incorporating insulation for lower comfort conditions. Interior insulation on exterior walls presents higher savings than exterior insulation.
Building retrofit addressing occupancy: An integrated cost and environmental life-cycle analysis
Rodrigues, Carla (author) / Freire, Fausto (author)
Energy and Buildings ; 140 ; 388-398
2017-01-28
11 pages
Article (Journal)
Electronic Resource
English
Building retrofit addressing occupancy: an integrated cost and environmental life-cycle analysis
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