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Thermodynamic analysis of novel ejector-assisted vapour absorption-resorption refrigeration systems

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  • Kumar, Anil
  • Modi, Anish

Abstract

The vapour absorption-resorption refrigeration system (VARS) can supply cooling and heating at lower operating pressure than the conventional vapour absorption refrigeration system. In this study, three novel configurations of the ejector-assisted ammonia-water VARS are proposed in which an ejector is integrated to replace the throttle valve. The three novel configurations are classified on the basis of the secondary flow to the ejector and are termed as the first configuration (C1), the second configuration (C2), and the third configuration (C3). The coefficient of performance (COP) of the proposed configurations is calculated and compared with that of the conventional VARS. For a constant high-pressure, the low-pressure is varied in the feasible range to demonstrate the effect of different pressure ratios on the COP, mass fraction gradients, generator circulation ratio, and heat inputs. In order to study the effect of operating parameters, the COP of the proposed novel configurations is evaluated at different desorber and generator operating temperatures. The results indicate that the proposed novel configurations have higher COP than the conventional VARS and the configuration C3 has the highest COP among the proposed configurations. At a resorber pressure of 6 bar, the configuration C3 achieves 15% higher COP than the conventional VARS.

Suggested Citation

  • Kumar, Anil & Modi, Anish, 2022. "Thermodynamic analysis of novel ejector-assisted vapour absorption-resorption refrigeration systems," Energy, Elsevier, vol. 244(PB).
    • Handle: RePEc:eee:energy:v:244:y:2022:i:pb:s0360544222000573
    DOI: 10.1016/j.energy.2022.123154
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    References listed on IDEAS

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    1. Liang, Xiao & Zhou, Sai & Deng, Jiaju & He, Guogeng & Cai, Dehua, 2019. "Thermodynamic analysis of a novel combined double ejector-absorption refrigeration system using ammonia/salt working pairs without mechanical pumps," Energy, Elsevier, vol. 185(C), pages 895-909.
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    4. Jia, Teng & Dou, Pengbo & Chu, Peng & Dai, Yanjun, 2020. "Proposal and performance analysis of a novel solar-assisted resorption-subcooled compression hybrid heat pump system for space heating in cold climate condition," Renewable Energy, Elsevier, vol. 150(C), pages 1136-1150.
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    Cited by:

    1. Cong Jiao & Zeyu Li, 2023. "An Updated Review of Solar Cooling Systems Driven by Photovoltaic–Thermal Collectors," Energies, MDPI, vol. 16(14), pages 1-34, July.
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    3. Mendiburu, Andrés Z. & Roberts, Justo J. & Rodrigues, Letícia Jenisch & Verma, Sujit Kr, 2023. "Thermodynamic modelling for absorption refrigeration cycles powered by solar energy and a case study for Porto Alegre, Brazil," Energy, Elsevier, vol. 266(C).

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