Journal of Siberian Federal University. Engineering & Technologies / Design and Experimental Analysis of a 4kW Rankine Organic Cycle Installation on an R142b

Full text (.pdf)
Issue
Journal of Siberian Federal University. Engineering & Technologies. 2025 18 (3)
Authors
Karabarin, Denis I.
Contact information
Karabarin, Denis I. : Siberian Federal University Krasnoyarsk, Russian Federation;
Keywords
energy-saving technologies; low- potential thermal energy; organic Rankine cycle; reon R142b; plant efficiency
Abstract

AIM. To determine the effect of changes in external parameters on the operating parameters of the Rankine organic cycle technology (ORC). METHODS. The thermodynamic Rankine cycle on organic heat carriers is considered. The analysis of the technology using various working bodies is carried out, taking into account the models of complete and incomplete absorption of primary heat in the evaporator. RESULTS. A thermodynamic analysis of the operating parameters of the ORC on various working fluids with varying parameters of the heating and cooling media is presented. The OPR parameter (optimal recovery 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. Analytical dependences of saturation temperatures and efficiency on changes in external temperatures of heating and cooling media are obtained. Conclusion. The choice of a working fluid for ORC installations is a key factor, as it determines the efficiency of the installation, the proportion of primary heat recovery and the specific power generated. The effectiveness of the ORC depends on the saturation and condensation temperatures, which, in turn, are determined by the temperatures of the heating and cooling media. The dependence of the optimal saturation temperature on the temperature of the heating medium is parabolic, and the dependence of the cycle efficiency on the saturation and condensation temperatures is linear, while the angle of inclination decreases with increasing saturation temperature

Pages
343–351
EDN
CZADGX
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/156046

Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).