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Pinch point determination and Multi-Objective optimization for working parameters of an ORC by using numerical analyses optimization method

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Date

2022

Author

Kocaman, Emrullah
Karakuş, Cuma
Yağlı, Hüseyin
Koç, Yıldız
Yumrutaş, Recep
Koç, Ali

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Citation

Kocaman, E., Karakuş, C., Yağlı, H., Koç, Y., Yumrutaş, R., Koç, A. (2022). Pinch point determination and Multi-Objective optimization for working parameters of an ORC by using numerical analyses optimization method. Energy Conversion and Management, 271, art. no. 116301. https://doi.org/10.1016/j.enconman.2022.116301

Abstract

In parallel with Kyoto, Paris and the green production agreements, the nowadays crucial subject is minimising energy consumption, increasing renewable energy usage and recovering waste heat. When it comes to waste heat, the organic Rankine cycle (ORC) technology comes fore. However, although the presence of many studies on the ORC in the literature, there is still an intense gap related to information on ORC working conditions, pinch point detection and numerical design and analysis methods. In this respect, the present paper suggests a multi-objective optimization model for an ORC by considering many parameters that affect the performance of the ORC like fluid type, thermodynamic properties of the organic fluids, pinch point temperature etc. For the analyses, experimentally recorded exhaust gas parameters for a reheat furnace located in the iron and steel plant were used. By considering all these, all performance-affecting parameters were included through the development of the multi-objective model. For the analyses, two wet types (ethanol, methanol), two isentropic (acetone, butene), and two dry types (cyclohexane, benzene) working fluids were selected to develop the multi-objective design and optimising method. After comprehensive analyses, it was seen that the developed mathematical model was valid for the designing and analysing of the ORC. In addition, it was observed that the system performance increases as the pinch point temperature difference decreases. In addition, it was seen that isentropic fluids have low efficiency in medium-temperature heat sources. Considering the system performance, initial investment cost and payback periods, it was seen that a waste heat recovery plant using Benzene, Methanol and Ethanol as working fluids is more feasible.

Source

Energy Conversion and Management

Volume

271

URI

https://doi.org/10.1016/j.enconman.2022.116301
https://hdl.handle.net/20.500.12508/2355

Collections

  • Araştırma Çıktıları | Scopus İndeksli Yayınlar Koleksiyonu [1057]
  • Araştırma Çıktıları | Web of Science İndeksli Yayınlar Koleksiyonu [1070]
  • Makale Koleksiyonu [159]



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