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Exergy and thermoeconomic analyses of the diffusion absorption refrigeration system with various nanoparticles and their different ratios as work fluid

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  • Gürbüz, Emine Yağız
  • Keçebaş, Ali
  • Sözen, Adnan

Abstract

The fact that diffusion absorption refrigeration (DAR) systems can also work with low power plants has increased the interest in these cooling systems again. The DAR systems are mostly analyzed using energy analysis. Although, energy analysis is not adequate itself, so exergy analysis is required. In this study, the effects of nanofluid use on the DAR system performance are investigated by performing exergy and thermoeconomic analyses. Some nanoparticles like MgOAl2O3, ZnOAl2O3 and TiO2 in various weight ratios are used in the DAR system. In experiments with different nanoparticles, the effect of utilizing hybrid nanoparticles on enhancing system performance is also evaluated. The highest exergy destruction rate occurs in the solution heat exchanger, although the lowest exergy destruction rate happens in the condenser. The highest exergy efficiency with 0.798 is found in the base fluid (25% NH3–H2O). Besides, it is clearly observed that exergy efficiency decreased in the DAR systems using nanofluids. Moreover, the economic analysis of the DAR system is added to the study in order to evaluate the relationship between the exergy destruction rate and initial investment costs. It is found that the DAR system with ZnOAl2O3 (2 wt%) is preferable compared to other DAR systems.

Suggested Citation

  • Gürbüz, Emine Yağız & Keçebaş, Ali & Sözen, Adnan, 2022. "Exergy and thermoeconomic analyses of the diffusion absorption refrigeration system with various nanoparticles and their different ratios as work fluid," Energy, Elsevier, vol. 248(C).
    • Handle: RePEc:eee:energy:v:248:y:2022:i:c:s0360544222004820
    DOI: 10.1016/j.energy.2022.123579
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    References listed on IDEAS

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    1. Taieb, Ahmed & Mejbri, Khalifa & Bellagi, Ahmed, 2016. "Detailed thermodynamic analysis of a diffusion-absorption refrigeration cycle," Energy, Elsevier, vol. 115(P1), pages 418-434.
    2. Lee, Jin Ki & Lee, Kyoung-Ryul & Kang, Yong Tae, 2014. "Development of binary nanoemulsion to apply for diffusion absorption refrigerator as a new refrigerant," Energy, Elsevier, vol. 78(C), pages 693-700.
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