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Effect of Metal Additives in the Bed on the Performance Parameters of an Adsorption Chiller with Desalination Function

Author

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  • Karol Sztekler

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland)

  • Wojciech Kalawa

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland)

  • Łukasz Mika

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland)

  • Marcin Sowa

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland)

Abstract

Adsorption chillers with desalination functionality, being devices characterised by very low electricity consumption, provide an alternative to conventional sources of cooling and water. The option of desalinating water means that the use of a single device enables obtaining two useful products. Adsorption chillers are not widely used at present. due to their low performance characteristics; these are, however, constantly being improved. This paper presents a verification of the possibility of increasing the cooling coefficient of performance (COP) and specific cooling power (SCP) of a laboratory adsorption chiller by optimising the length of cycle times and using a copper additive to silica gel with a mass fraction of 15% to increase heat transport in the bed. The choice of copper among other considered additives was determined by the conclusions from the research on the sorption kinetics of various mixtures, price and availability, and a high thermal conductivity. The device was operated in a two-bed mode aimed at producing cooling. The adsorbate was distilled water. The results were compared with those obtained under similar conditions when the beds were only filled with silica gel. As a result of the testing, it was found that the use of the copper additive with the sorbent increased both the COP and SCP. The tests were performed for different cycle times, of 100, 200, 300 and 600 s. With increasing cycle time COP also increased. In contrast, the specific cooling power increased only up to a certain point, whereafter its value decreased.

Suggested Citation

  • Karol Sztekler & Wojciech Kalawa & Łukasz Mika & Marcin Sowa, 2021. "Effect of Metal Additives in the Bed on the Performance Parameters of an Adsorption Chiller with Desalination Function," Energies, MDPI, vol. 14(21), pages 1-27, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:7226-:d:670837
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    References listed on IDEAS

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    1. Karol Sztekler & Wojciech Kalawa & Lukasz Mika & Jaroslaw Krzywanski & Karolina Grabowska & Marcin Sosnowski & Wojciech Nowak & Tomasz Siwek & Artur Bieniek, 2020. "Modeling of a Combined Cycle Gas Turbine Integrated with an Adsorption Chiller," Energies, MDPI, vol. 13(3), pages 1-12, January.
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    9. Basdanis, Thanasis & Tsimpoukis, Alexandros & Valougeorgis, Dimitris, 2021. "Performance optimization of a solar adsorption chiller by dynamically adjusting the half-cycle time," Renewable Energy, Elsevier, vol. 164(C), pages 362-374.
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    Cited by:

    1. Marcin Sosnowski & Jaroslaw Krzywanski & Norbert Skoczylas, 2022. "Adsorption Desalination and Cooling Systems: Advances in Design, Modeling and Performance," Energies, MDPI, vol. 15(11), pages 1-6, May.
    2. Ahmed S. Alsaman & Ahmed A. Hassan & Ehab S. Ali & Ramy H. Mohammed & Alaa E. Zohir & Ayman M. Farid & Ayman M. Zakaria Eraqi & Hamdy H. El-Ghetany & Ahmed A. Askalany, 2022. "Hybrid Solar-Driven Desalination/Cooling Systems: Current Situation and Future Trend," Energies, MDPI, vol. 15(21), pages 1-25, October.
    3. Wojciech Kalawa & Karol Sztekler & Agata Mlonka-Mędrala & Ewelina Radomska & Wojciech Nowak & Łukasz Mika & Tomasz Bujok & Piotr Boruta, 2023. "Simulation Analysis of Mechanical Fluidized Bed in Adsorption Chillers," Energies, MDPI, vol. 16(15), pages 1-22, August.
    4. Lukasz Lasek & Anna Zylka & Jaroslaw Krzywanski & Dorian Skrobek & Karol Sztekler & Wojciech Nowak, 2023. "Review of Fluidized Bed Technology Application for Adsorption Cooling and Desalination Systems," Energies, MDPI, vol. 16(21), pages 1-21, October.
    5. Marcin Sowa & Karol Sztekler & Agata Mlonka-Mędrala & Łukasz Mika, 2023. "An Overview of Developments In Silica Gel Matrix Composite Sorbents for Adsorption Chillers with Desalination Function," Energies, MDPI, vol. 16(15), pages 1-34, August.

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