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Effects of Evaporator and Condenser in the Analysis of Adsorption Chillers

Author

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  • Woo Su Lee

    (Department of Mechanical Engineering, Sejong University, Seoul 05006, Korea)

  • Moon Yong Park

    (Department of Mechanical Engineering, Sejong University, Seoul 05006, Korea)

  • Xuan Quang Duong

    (Department of Mechanical Engineering, Sejong University, Seoul 05006, Korea)

  • Ngoc Vi Cao

    (Department of Mechanical Engineering, Sejong University, Seoul 05006, Korea)

  • Jae Dong Chung

    (Department of Mechanical Engineering, Sejong University, Seoul 05006, Korea)

Abstract

In a survey of the literature from the last 20 years, 20% of the numerical models used to analyze the performance of adsorption chillers assumed the evaporator and condenser were ideal, with a fixed evaporation temperature and condenser temperature, and ignored interactions between the adsorption bed and evaporator/condenser. Even when the interaction with the evaporator and condenser was included, the other 80% of studies modeled the adsorption bed based on the LPM (lumped parameter method), which ignores the geometry effect and contact resistance of the bed, and thus reduces the accuracy of the analysis. As a consequence, these earlier numerical studies overestimated the system performance of the adsorption chiller. In this study, we conducted a refined numerical approach which avoids these limitations, producing estimates in close agreement with experimental results. Compared with our approach, the models with ideal treatment of evaporator and condenser overestimated COP (coefficient of performance) and SCP (specific cooling power) by as much as 16.12% and 24.64%, respectively. The models based on LPM overestimated COP and SCP by 22.82% and 11.28%, compared to our approach.

Suggested Citation

  • Woo Su Lee & Moon Yong Park & Xuan Quang Duong & Ngoc Vi Cao & Jae Dong Chung, 2020. "Effects of Evaporator and Condenser in the Analysis of Adsorption Chillers," Energies, MDPI, vol. 13(8), pages 1-14, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:8:p:1901-:d:345060
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    References listed on IDEAS

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    1. Mohammadzadeh Kowsari, Milad & Niazmand, Hamid & Tokarev, Mikhail Mikhailovich, 2018. "Bed configuration effects on the finned flat-tube adsorption heat exchanger performance: Numerical modeling and experimental validation," Applied Energy, Elsevier, vol. 213(C), pages 540-554.
    2. Li, S. & Wu, J.Y., 2009. "Theoretical research of a silica gel-water adsorption chiller in a micro combined cooling, heating and power (CCHP) system," Applied Energy, Elsevier, vol. 86(6), pages 958-967, June.
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    Cited by:

    1. Tommaso Toppi & Tommaso Villa & Salvatore Vasta & Walter Mittelbach & Angelo Freni, 2022. "Testing of a Falling-Film Evaporator for Adsorption Chillers," Energies, MDPI, vol. 15(5), pages 1-14, February.
    2. Chauhan, P.R. & Kaushik, S.C. & Tyagi, S.K., 2022. "Current status and technological advancements in adsorption refrigeration systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 154(C).

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