Abstract
In the process of promoting carbon neutrality, heat driven refrigeration technology has been widely concerned due to its ability to make use of low-grade thermal energy and improve energy utilization. A novel combined organic Rankine cycle and ejector expansion refrigeration cycle (ORC-EERC) system is proposed in this study. To lower global warming potential and flammability, refrigerant mixture R290/R1234ze is chosen as the working fluid. The proposed ORC-EERC system with ejector and vapor–liquid separator are compared with those of the traditional organic Rankine cycle and vapor compression refrigeration cycle (ORC-VCC) by thermodynamic and economic analysis. The simulation results show that the ORC-EERC can achieve higher exergy efficiency and produce lower cooling temperature. Under typical conditions, the total coefficient of performance of ORC-EERC increased by 17.32% and its levelized cost of cooling decreased by 10.45% compared with the ORC-VCC. Furthermore, the ORC-EERC can remarkably improve performance at a lower freezing temperature or a higher condensing temperature. The results of the proposed cycle show that the ORC-EERC system has great application potential in freezers.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
