Optimising embodied carbon and U-value in load bearing walls: A mathematical bi-objective mixed integer programming approach

摘要: Abstract The construction and building industry is known to be a carbon intensive sector. Of the various opportunities present for minimising footprint of buildings, optimising material selection components one plausible avenue significant reductions. In opaque load-bearing walls, thermal performance build up parameter that has greatest influence over operational emissions, with thicker profile walls leading lower U-values hence from heating cooling. Conversely, extra wall contributes increased embodied carbon. aim this study capture such trade-off between U-value by presenting practical optimisation model design load bearing in commercial residential buildings. particular, two objective functions are incorporated within proposed structural layers; first minimises while other wall. variables forming include thickness each layer, choice layer. tested on case example applicable Australia UK, involving Results reported form Pareto efficient frontier. Utilising enables realisation impacts layering structure.