Journal of Siberian Federal University. Engineering & Technologies / Assessment of the Effect of Changes in the Operating Parameters of the Organic Rankine Cycle, with Changes in External

Full text (.pdf)
Issue
Journal of Siberian Federal University. Engineering & Technologies. 2024 17 (8)
Authors
Karabarin, Denis I.
Contact information
Karabarin, Denis I.: Siberian Federal University Krasnoyarsk, Russian Federation;
Keywords
energy efficiency; low-potential heat; organic Rankine cycle
Abstract

AIM. To determine the effect of changes in external parameters on the operating parameters of the Rankine organic cycle technology. METHODS. The thermodynamic Rankine cycle on organic heat carriers was considered. The analysis of the operation of the technology for various working hoists is carried out, taking into account the model of complete and incomplete absorption of primary heat by the working fluid in the evaporator. results. A thermodynamic analysis of the operating parameters of the ORC on various working fluids with different parameters of heating and cooling media is presented. The ORC parameter is proposed, which takes into account the proportion of recovery of primary heat by the working fluid, depending on the internal parameters of the ORC. The regime and analytical dependences of saturation temperatures and efficiency depending on changes in external temperatures: heating and cooling media are presented. Conclusion. The choice of a working fluid for ORC installations is of the greatest interest, since it must take into account the efficiency of the installation, the proportion of primary heat recovery and the specific power generated. The efficiency of the ORC depends on the saturation and condensation temperatures, which in turn depends on the temperatures of the heating and cooling media. The dependence of the optimal saturation temperature on the temperature of the heating medium has a parabolic form. The dependence of the cycle efficiency on the saturation and condensation temperatures has a linear form, while the angle of inclination decreases with an increase in the saturation temperature

Pages
1019–1027
EDN
WXHCKY
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/154304

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