Asli TiktasHuseyin GunerhanArif HepbasliHepbasli, ArifGunerhan, HuseyinTiktas, Asli2025-10-0620231742-82971742-830010.1504/IJEX.2023.134610http://dx.doi.org/10.1504/IJEX.2023.134610https://gcris.yasar.edu.tr/handle/123456789/7388https://doi.org/10.1504/IJEX.2023.134610A novel mathematical model was used to estimate optimum tilt and azimuth angles considering exergoeconomic and sustainability aspects. This approach made the solar collector's performance evaluation independent of experimental precision. The optimal angles of 41.191degree celsius 10.038degree celsius for Izmir maximised the total surface radiation exergetic efficiency exergetic sustainability index and minimised the destruction and cost rates due to the enhanced useful exergy stream. However for thermal efficiency maximisation useful collected solar energy and total surface radiation competed leading to lower tilt and azimuth angles (0 -0.008). A multi-objective optimisation process chose the pair (0 259.428) to maximise first law efficiency and exergoeconomic factor.Englishinfo:eu-repo/semantics/closedAccessflat plate solar collector, tilt and azimuth angle, single and multi-objective optimisation, non-dominated genetic sorting algorithm, exergoeconomic factorHOURLY DIFFUSE FRACTION, ECONOMIC VIABILITY, SAO-PAULO, RADIATION, IRRADIATION, CITY, TILTTilt and Azimuth AngleNon-Dominated Genetic Sorting AlgorithmFlat Plate Solar CollectorExergoeconomic FactorSingle and Multi-Objective OptimisationArticle