Abstract
A pilot-scale organic Rankine cycle (ORC) power generation system with a thermally-driven pump is constructed, and the working fluid of R245fa and a screw expander are adopted. Different heat source temperatures in the range of 90.00 °C–130.00 °C and the ambient temperature around 22 °C are employed to investigate the performance of the ORC system in the thermally-driven mode. The experimental results show that the generated electrical power indicates a stable fluctuation with the maximum time-averaged power of 11.61 kW at the heat source temperature of 130.00 °C, and the peak and valley values of 13.9 kW and 7.2 kW, respectively. The maximum thermal efficiency of 4.3% and the exergetic efficiency of 20.9% are obtained at the heat source temperature of 130.00 °C and 100.00 °C, respectively. Meanwhile, the proportion of full width at half maxima (PFWHM) is defined to illustrate the fluctuation characteristics of the output power, and the value is always between 0.70 and 0.72 at different heat source temperatures. Finally, the performance of the thermally-driven ORC system is compared with that of the conventional ORC system, and the results show that the ORC system in the thermally-driven mode adapts better to the heat source temperature below 110.00 °C.
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.
