Sustainability | Free Full-Text | Multi-Objective Optimization of Building Life Cycle Performance. A Housing Renovation Case Study in Northern Europe


Whereas the operational power use of buildings is commonly regulated in present power saving insurance policies, their embodied greenhouse gasoline emissions nonetheless have a substantial mitigation potential. The research goals at growing a multi-objective optimization methodology for design and renovation of buildings incorporating the operational and embodied power calls for, international warming potential, and prices as goal features. The optimization methodology was examined on the renovation of an residence constructing in Denmark, primarily focusing envelope enhancements as roof and exterior wall insulation and home windows. Cellulose insulation has been the predominant end result, along with fiber cement or aluminum-based cladding and 2-layered glazing. The annual power demand has been diminished from 166.four to a spread between 76.5 and 83.7 kWh/(m2 y) within the optimum options. The truth that the authorized necessities of 70 kWh/(m2 y) are almost met with out constructing service enhancements signifies that power necessities might be fulfilled with out compromising greenhouse gasoline emissions and price. For the reason that methodology depends on normal nationwide efficiency reporting instruments, the authors consider that this research is a preliminary step in direction of extra cost-efficient and low-carbon constructing renovations by using multi-optimization strategies.
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