Analysis of the Efficiency of a Power Generating Plant Operating on the Basis of the Brayton Thermodynamic Cycle and Energy Recuperation

DOI https://doi.org/10.15407/pmach2023.03.006
Journal Journal of Mechanical Engineering – Problemy Mashynobuduvannia
Publisher Anatolii Pidhornyi Institute for Mechanical Engineering Problems
National Academy of Science of Ukraine
ISSN  2709-2984 (Print), 2709-2992 (Online)
Issue Vol. 26, no. 3, 2023 (September)
Pages 6-14
Cited by J. of Mech. Eng., 2023, vol. 26, no. 3, pp. 6-14

 

Authors

Andrii V. Rusanov, Anatolii Pidhornyi Institute of Mechanical Engineering Problems of NAS of Ukraine (2/10, Pozharskyi str., Kharkiv, 61046, Ukraine), e-mail: rusanov@ipmach.kharkov.ua, ORCID: 0000-0002-9957-8974

Valerii S. Fedoreiko, Ternopil Volodymyr Hnatyuk National Pedagogical University (2, Maxyma Kryvonosa str., Ternopil, 46027, Ukraine), e-mail: kaf_mki@tnpu.edu.ua, ORCID: 0000-0001-5822-3002

Dariusz Kardaś, Institute of Fluid Flow Machinery Polish Academy of Sciences (14, Fiszera str., Gdańsk, 80-231, Poland), e-mail: dariusz.kardas@imp.gda.pl, ORCID: 0000-0001-6995-1857

Andrii O. Kostikov, Anatolii Pidhornyi Institute of Mechanical Engineering Problems of NAS of Ukraine (2/10, Pozharskyi str., Kharkiv, 61046, Ukraine), e-mail: kostikov@ipmach.kharkov.ua, ORCID: https://orcid.org/0000-0001-6076-1942

Viktoriia O. Tarasova, Anatolii Pidhornyi Institute of Mechanical Engineering Problems of NAS of Ukraine (2/10, Pozharskyi str., Kharkiv, 61046, Ukraine), e-mail: vat523710@gmail.com, ORCID: 0000-0003-3252-7619

Roman A. Rusanov, Anatolii Pidhornyi Institute of Mechanical Engineering Problems of NAS of Ukraine (2/10, Pozharskyi str., Kharkiv, 61046, Ukraine), e-mail: roman_rusanov@ipmach.kharkov.ua, ORCID: 0000-0003-2930-2574

Maryna O. Chuhai, Anatolii Pidhornyi Institute of Mechanical Engineering Problems of NAS of Ukraine (2/10, Pozharskyi str., Kharkiv, 61046, Ukraine), e-mail: mchugay@ipmach.kharkov.ua, ORCID: 0000-0002-0696-4527

Mykhailo I. Sukhanov, Anatolii Pidhornyi Institute of Mechanical Engineering Problems of NAS of Ukraine (2/10, Pozharskyi str., Kharkiv, 61046, Ukraine), ORCID: 0000-0002-3029-7111

Serhii P. Tretiak, Anatolii Pidhornyi Institute of Mechanical Engineering Problems of NAS of Ukraine (2/10, Pozharskyi str., Kharkiv, 61046, Ukraine), e-mail: s.tretiak@ipmach.kharkov.ua, ORCID: 0009-0008-1265-4227

 

Abstract

The thermal scheme of a power generating plant with a remote heat exchanger operating according to the Brayton cycle with energy recuperation is considered. It is assumed that the plant will work on non-certified (cheap) biofuel. It is shown that, in contrast to the usual Brayton cycle, in the cycle with energy recuperation, the greatest influence on the thermal efficiency is the heating temperature of the working medium and the internal efficiency of the main components of the plant, such as the compressor and the turbine. Also, in contrast to the usual Brayton cycle, a higher efficiency of the plant is achieved with smaller degrees of pressure reduction (increase) in the turbine (compressor). It was established that even at a relatively low temperature of the working medium heating (500 ºC), with high efficiency of the compressor and turbine, it is possible to achieve good characteristics of the power plant as a whole. At a temperature of up to 850 ºC, a thermal efficiency of 40% is achieved, but in this case the cost of materials and production increases. For a final conclusion about the possibility of using the proposed plant and its efficiency, it is necessary to conduct additional studies, in particular, of its main elements, such as a compressor, turbine, heat exchanger and others.

 

Keywords: thermal scheme, power generating plant, Brayton cycle, energy recuperation, thermal efficiency, turbine, compressor, efficiency.

 

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Received 25 August 2023

Published 30 September 2023