No abstract

11Energy simulation tools have a major role in the assessment of building energy retrofit (BER) 12 measures. Exergoeconomic analysis and optimisation is a common practice in sectors such 13 as the power generation and chemical processes, aiding engineers to obtain more energy-14 efficient and cost-effective energy systems designs. ExRET-Opt, a retrofit-oriented modular-15 based dynamic simulation framework has been developed by embedding a comprehensive 16 exergy/exergoeconomic calculation method into a typical open-source building energy 17 simulation tool (EnergyPlus). The aim of this paper is to show the decomposition of Opt by presenting modules, submodules and subroutines used for the framework's 19 development as well as verify the outputs with existing research data. In addition, the possibility 20 to perform multi-objective optimisation analysis based on genetic-algorithms combined with 21 multi-criteria decision making methods was included within the simulation framework. This 22 addition could potentiate BER design teams to perform quick exergy/exergoeconomic 23 optimisation, in order to find opportunities for thermodynamic improvements along the 24 building's active and passive energy systems. The enhanced simulation framework is tested 25 using a primary school building as a case study.