ORIGINAL PAPER
Analysing efficiency and economic aspects in organic Rankine cycle systems
1
Department of Energy, Taraz Regional University named after M.Kh. Dulaty, Kazakhstan
2
Department of Automation and Telecommunications, Taraz Regional University named after M.Kh. Dulaty, Kazakhstan
3
Department of Technical Physics, Taraz Regional University named after M.Kh. Dulaty, Kazakhstan
Submission date: 2024-03-08
Final revision date: 2024-04-26
Acceptance date: 2024-05-09
Publication date: 2024-09-24
Corresponding author
Nazym Abdlakhatova
Department of Energy, Taraz Regional University named after M.Kh. Dulaty, Kazakhstan
Department of Energy, Taraz Regional University named after M.Kh. Dulaty, Kazakhstan
Polityka Energetyczna – Energy Policy Journal 2024;27(3):87-108
KEYWORDS
TOPICS
Energy economicsRenewable energy sourcesEcological, economic, social and legal aspects in energy systemsEffective use of energyDevelopment of new energy technologiesEnergy systems modelling
ABSTRACT
Research on the technical and economic aspects of organic Rankine cycle (ORC) systems is of great relevance, showing potential for reducing environmental impacts and improving resource efficiency, which becomes critical in the context of the rapid global transformation towards sustainable and energy-efficient solutions. The purpose of this study was to investigate the existing systems in the field of ORC systems, including the technical and economic aspects of their application in small-scale power units. The study employed the statistical method, comparative method, and analysis. The study highlighted the key aspects of the application of ORC technology in small-scale power units. Substantial attention was given to economic analyses to identify factors affecting the competitiveness of technology in the field of small-scale energy projects. An economic study found high unit costs to be the main obstacle to the widespread adoption of the ORC in small-scale energy applications. This study also presented a technical review of the techniques for selecting the expander and working fluid. The analysis of these aspects revealed the main parameters affecting the efficiency and cost of the system. Optimization of the ORC to reduce unit cost was highlighted as a priority area for development, facilitating faster payback and widespread adoption of the technology. The role of the expander in the system and reducing the cost of high-speed power generators were also considered prominent factors for improving economic efficiency. The obtained findings may represent a valuable framework, enabling cost reduction in small-scale ORC systems and promoting the development of clean and economically competitive small-scale energy solutions.
METADATA IN OTHER LANGUAGES:
Polish
Analiza efektywności i aspektów ekonomicznych w organicznych systemach cyklu Rankine’a
dobór płynu roboczego, ekspander, zespoły napędowe, konkurencyjność, koszt jednostkowy
Badania nad technicznymi i ekonomicznymi aspektami organicznych systemów cyklu Rankine’a (ORC) są niezwykle istotne, wykazując potencjał redukcji wpływu na środowisko i poprawy efektywności wykorzystania zasobów, co staje się krytyczne w kontekście szybkiej globalnej transformacji w kierunku zrównoważonych i energooszczędnych rozwiązań. Celem tej analizy było zbadanie istniejących systemów w dziedzinie systemów ORC, w tym technicznych i ekonomicznych aspektów ich zastosowania w małych jednostkach energetycznych. W analizie zastosowano metodę statystyczną, metodę porównawczą i analizę. Badanie podkreśliło kluczowe aspekty zastosowania technologii ORC w małych jednostkach energetycznych. Dużą uwagę poświęcono analizom ekonomicznym w celu zidentyfikowania czynników wpływających na konkurencyjność technologii w dziedzinie małych projektów energetycznych. Badanie ekonomiczne wykazało, że wysokie koszty jednostkowe są główną przeszkodą dla powszechnego przyjęcia ORC w zastosowaniach energetycznych na małą skalę. Przedstawiono również przegląd techniczny technik doboru ekspandera i płynu roboczego. Analiza tych aspektów ujawniła główne parametry wpływające na wydajność i koszt systemu. Optymalizacja ORC w celu obniżenia kosztów jednostkowych została wyróżniona jako priorytetowy obszar rozwoju, ułatwiając szybszy zwrot z inwestycji i powszechne przyjęcie technologii. Rola ekspandera w systemie i obniżenie kosztów szybkich generatorów mocy zostały również uznane za główne czynniki poprawy efektywności ekonomicznej. Uzyskane ustalenia mogą stanowić cenne ramy, umożliwiające obniżenie kosztów w małych systemach ORC i promujące rozwój czystych i ekonomicznie konkurencyjnych rozwiązań energetycznych na małą skalę.
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