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<p>In this study, a numerical model was developed for adsorption chillers utilizing low-grade waste heat. Initially, silica gel-coated and packed models were developed and analyzed to assess the performance differences based on the adsorbent fixation method. The results indicated that the silica gel-coated model outperformed the packed model, achieving a specific cooling power of 117.87 W/kg compared with 46.48 W/kg. Subsequently, numerical models of the adsorption chillers with three different adsorbents (silica gel, zeolite, and metal-organic frameworks) were developed under industrial cooling conditions. Simulations with varying temperature parameters for each model revealed that the zeolite-based model exhibited the highest performance with a maximum cooling capacity of 3.91 kW and coefficient of performance of 0.718. The simulations underscored the significant impact of cooling water temperature on the performance, with the performance decreasing with increasing cooling water temperature.</p>

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Numerical simulation study on performance analysis of adsorption chillers for industrial process cooling water with various adsorbents

  • 期刊论文

  • 发表日期：

    2025年5月31日

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  • Kyung Jin Bae,
  • Da Hyuk Shin,
  • Oh Kyung Kwon,
  • Taek Keun Kim

摘要

In this study, a numerical model was developed for adsorption chillers utilizing low-grade waste heat. Initially, silica gel-coated and packed models were developed and analyzed to assess the performance differences based on the adsorbent fixation method. The results indicated that the silica gel-coated model outperformed the packed model, achieving a specific cooling power of 117.87 W/kg compared with 46.48 W/kg. Subsequently, numerical models of the adsorption chillers with three different adsorbents (silica gel, zeolite, and metal-organic frameworks) were developed under industrial cooling conditions. Simulations with varying temperature parameters for each model revealed that the zeolite-based model exhibited the highest performance with a maximum cooling capacity of 3.91 kW and coefficient of performance of 0.718. The simulations underscored the significant impact of cooling water temperature on the performance, with the performance decreasing with increasing cooling water temperature.