Selecting Cycle and Design Parameters of a Super Critical CO2 Cycle for a 180 kW Biogas Engine

Autor: Jarosław Milewski, Arkadiusz Szczęśniak, Piotr Lis, Łukasz Szabłowski, Olaf Dybiński, Kamil Futyma, Arkadiusz Sieńko, Artur Olszewski, Tomasz Sęk, Władysław Kryłłowicz
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Energies, Vol 17, Iss 12, p 2982 (2024)
Druh dokumentu: article
ISSN: 1996-1073
DOI: 10.3390/en17122982
Popis: The objective of this paper was to study the sCO2 cycle as a waste heat recovery system for a 180 kW biogas engine. The research methodology adopted was numerical simulations through two models built in different programs: Aspen HYSYS and GT Suite. The models were used to optimize the design and thermodynamic parameters of a CO2 cycle in terms of system power, system efficiency, expander, and compressor efficiency. Depending on the objective function, the sCO2 cycle could provide additional power ranging from 27.9 to 11.3 kW. Based on the calculation performed, “Recuperated cycle at maximum power” was selected for further investigation. The off-design analysis of the system revealed the optimum operating point. The authors designed the preliminary dimensions of the turbomachinery, i.e., the rotor dimension is 16 mm, which will rotate at 100,000 rpm.
Databáze: Directory of Open Access Journals
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