THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

THERMODYNAMIC PERFORMANCE ANALYSIS OF SUPERCRITICAL CO2 BRAYTON CYCLE

ABSTRACT
The supercritical CO2 is used as working fluid for power system cycle. This paper presents thermodynamic performance analysis results on supercritical CO2 Brayton cycle. Based on the assumptions of the relevant initial parameters, the mathematical models of compressor, turbine, recuperator and heater are constructed, and the thermal efficiency of regenerative Brayton cycle and recompression Brayton cycle are calculated and analyzed. The results reveal that the efficiency of the recompression cycle is higher than that of the simple regenerative cycle. The effects of inlet temperature, inlet pressure of the main compressor and inlet temperature, inlet pressure of the turbine on the thermodynamic performance of the recompression cycle are studied, and the influencing mechanism is explained. The results show that the cycle efficiency decreases with the increase of the inlet temperature of the main compressor. There exists an optimum inlet pressure in the main compressor to maximize the cycle efficiency. The cycle efficiency of the system increases with the increase of the inlet temperature and pressure of the turbine. When the inlet temperature of the turbine exceeds 600℃, the thermal efficiency of the cycle can reach more than 50%.
KEYWORDS
PAPER SUBMITTED: 2020-03-14
PAPER REVISED: 2020-08-24
PAPER ACCEPTED: 2020-09-01
PUBLISHED ONLINE: 2020-10-10
DOI REFERENCE: https://doi.org/10.2298/TSCI200314294Y
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 5, PAGES [3933 - 3943]
REFERENCES
  1. Cabeza, L. F. , et al., Supercritical CO2 as heat transfer fluid: A review, Applied Thermal Engineering 125(2017),10,pp.799-810
  2. F. Crespi, G. Gavagnin, D. Sanchez, and G. S. Martinez, Supercritical carbon dioxide cycles for power generation: A review, Applied Energy 195(2017), pp. 152-183
  3. Sarkar, J., Improving thermal performance of microchannel electronic heat sink using supercritical CO2 as coolant, Thermal Science 23(2019), pp. 243-253
  4. Chen, Y. ,et al., A comparative study of the carbon dioxide transcritical power cycle compared with an organic rankine cycle with R123 as working fluid in waste heat recovery, Applied Thermal Engineering, 26 (2006),12,pp. 2142-2147
  5. Feher, E. G. , The supercritical thermodynamic power cycle, Energy Conversion 8.2 (1968),9,pp.85-90
  6. Angelino,G., Carbon dioxide condensation cycles for power production, Transaction ASME Journal of Engineering and Power ,90(1968) ,7,pp.287-295
  7. Pasch, J.,et al., Evaluation of Recent Data From the Sandia National Laboratories Closed Brayton Cycle Testing.Asme Turbo Expo: Turbomachinery Technical Conference & Exposition, Seoul,2016
  8. Clementoni, E. M., et al., Off-Nominal Component Performance in a Supercritical Carbon Dioxide Brayton Cycle, ASME. J. Eng. Gas Turbines Power,138(2016),1,pp.011703
  9. Persichilli,M., et al., Transforming waste heat to power through development of a CO2-based power cycle, Presented at Electric Power Expo, Rosemount, IL U.S.A, 2011
  10. Utamura,M., et al., Demonstration Test Plant of Closed Cycle Gas Turbine with Supercritical CO2 as Working Fluid, Strojarstvo,52(2010),8,pp.459-465
  11. Wang, J.,et al., Research Activities on Supercritical Carbon Dioxide Power Conversion Technology in China. Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 3B: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Supercritical CO2 Power Cycles; Wind Energy. Düsseldorf, Germany, 2014
  12. Dostal, V.,et al., High-Performance Supercritical Carbon Dioxide Cycle for Next-Generation Nuclear Reactors, Nuclear Technology,154(2006),6,pp.265-282
  13. Chacartegui, R.,et al., Alternative Cycles Based on Carbon Dioxide for Central Receiver Solar Power Plants, Applied Thermal Engineering ,31 (2011),4,pp. 872-879
  14. Brun,K.,et al., Fundamentals and Applications of Supercritical Carbon Dioxide (SCO2) Based Power Cycles,Woodhead Publishing, Elsevier Science: Cambridge, UK, 2017
  15. Ahn,Y.,et al., Review of supercritical CO2 power cycle technology and current status of research and development, Nuclear Engineering and Technology,47(2015),10,pp. 647-661
  16. Dyreby, J.J. ,Modeling the Supercritical carbon dioxide Brayton cycle with recompression, Ph.D .Thesis, Mechanical Engineering, University of Wisconsin-Madison,Madison,USA,2014
  17. Saeed,M., et al., Design optimization and performance analysis of a supercritical carbon dioxide recompression Brayton cycle based on the detailed models of the cycle components, Energy Conversion and Management, 196(2019),9,pp.242-260
  18. Saeed,M.,Kim,M., Analysis of a recompression supercritical carbon dioxide power cycle with an integrated turbine design/optimization algorithm, Energy,165 (2018),12,pp. 93-111
  19. Deng,T. et al., Dynamic modelling and transient characteristics of supercritical CO2 recompression Brayton cycle, Energy,180(2019),8,pp.292-302
  20. Salim,M.S.,et al., Performance Analysis of the Supercritical Carbon Dioxide Re-compression Brayton Cycle, Applied Sciences,10 (2020),2,1129

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence