@article { , title = {Thermoeconomic assessments and optimization of a vapour compression and an ejector integrated sCO2 trigeneration systems}, abstract = {Two sCO2 trigeneration systems are proposed in this study to supply power, heating and cooling simultaneously, one is a vapour compression recuperation system (VCRS), the other is an ejector integrated recuperation system (EIRS). Their performance assessments are conducted from thermoeconomic point of view. In a recuperative base case scenario with cooling capacity of 100 kW, the transcritical VCRS has the ability to provide 46.5 kW power output with the trigeneration utilization efficiency of 160 \% and exergy efficiency of 49.92 \%, while the transcritical EIRS can deliver 54.43 kW power with the trigeneration utilization efficiency of 158 \% and exergy efficiency of 54.41 \%. The effects of key operational parameters are evaluated, including the maximum cycle pressure, minimum and maximum power cycle temperatures, evaporation temperature and trade-offs between thermoeconomic points. Multi-objective optimization is carried out based on the identified trade-offs. It is found that the VCRS exergy efficiency increases 4.51 \% when the minimum exergy cost rate rises 13 \%, the EIRS exergy efficiency improves 4.21 \% as the minimum exergy cost rate goes up 14 \%.}, doi = {10.1016/j.seta.2022.102832}, issn = {2213-1388}, journal = {Sustainable Energy Technologies and Assessments}, publicationstatus = {Published}, publisher = {Elsevier BV}, url = {https://nottingham-repository.worktribe.com/output/12612525}, volume = {54}, keyword = {Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment}, year = {2022}, author = {Hakan Çetin, Tuğberk and Zhu, Jie} }