Decision aiding & multi criteria optimization for existing buildings holistic retrofit

Mathieu Rivallain (1) , P. E. Leger (1) , Olivier Baverel (2) , Bruno Peuportier (3)

1 navier umr 8205 - Laboratoire Navier
2 msa - Matériaux et Structures Architecturés
3 CEP/Paris

n most developed countries, existing building stocks energy retrofit represents a major lever towards energy consumptions mitigation. Yet, the identification of optimal retrofit programs, including actions planning, is still a difficult task for professionals. The present paper is a contribution to decision aiding through multi criteria optimization of energy retrofit programs. A multi criteria genetic algorithm (NSGA-II) is used to optimize retrofit programs on both their content and planning. The retrofit measures address building envelopes and the replacement of equipment. The objective functions target environmental impacts, financial indicators and occupants' well-being, on building life cycle. This method and tool contribute to decision aiding by identifying Pareto non dominated holistic retrofit programs, at a building scale, on a multi criteria basis, over life cycle.

Keywords: Building envelopes; Building life cycle; Building stocks; Decision aiding; Developed countries; Energy retrofit; Financial indicator; Multi-criteria; Multicriteria optimization; NSGA-II; Objective functions; Retrofit programs; Civil engineering; Life cycle; Retrofitting; Optimization

Mathieu Rivallain, P. E. Leger, Olivier Baverel, Bruno Peuportier. Decision aiding & multi criteria optimization for existing buildings holistic retrofit. 3rd International Symposium on Life-Cycle Civil Engineering, IALCCE 2012, Oct 2012, Vienne, Austria. pp.1084-1092. ⟨hal-00769827⟩