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<p>Desorption heating has garnered significant attention in recent years due to its being environmentally friendly and new technology. Researchers worldwide are exploring various adsorbent-adsorbate pairs to develop cost-effective and high-performance systems. The efficiency of adsorption systems largely depends on desorption equilibrium and the thermo-physical and chemical properties of different adsorbent-heating pairs. This paper provides a study of physical adsorbent-adsorbate pairs used in adsorption heating applications. Therefore, a numerical model was developed for this purpose, our study aims to review and compare the physical properties and the extent to which these values affect the following variables: performance coefficient, heat of the adsorption, and the mass concentration of the adsorbent of the heating cycle. By changing the generation temperature and the evaporator and condenser temperatures.The results indicate that the AC/water pair exhibits a superior temperature coefficient compared to the other studied pairs, reflecting its enhanced thermal responsiveness. Notably, the adsorption heat generated by the AC/water pair reached a maximum of 418&#xa0;MJ, which is approximately three times higher than that of AC/methanol (173&#xa0;MJ) and AC/ethanol (127.87&#xa0;MJ). In terms of performance, the highest coefficients of performance (COP) were recorded as 0.682 at 140 °C for AC/water, 0.71 at 100&#xa0;°C for AC/methanol, and 0.69 at 80&#xa0;°C for AC/ethanol, Also, RMSE 0.0117 for LH, 0.0378 for AC-35. These outcomes underscore the remarkable potential of the AC/water pair, in particular, for advanced thermal energy systems and next-generation adsorption-based applications.</p>

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Numerical modeling of adsorption heat cycle using activated carbon with different adsorbate pairs

  • 期刊论文

  • 发表日期：

    2025年9月22日

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  • Imad Kemerchou,
  • Adrian-Gabriel Ghiaus,
  • Hicham Henna

摘要

Desorption heating has garnered significant attention in recent years due to its being environmentally friendly and new technology. Researchers worldwide are exploring various adsorbent-adsorbate pairs to develop cost-effective and high-performance systems. The efficiency of adsorption systems largely depends on desorption equilibrium and the thermo-physical and chemical properties of different adsorbent-heating pairs. This paper provides a study of physical adsorbent-adsorbate pairs used in adsorption heating applications. Therefore, a numerical model was developed for this purpose, our study aims to review and compare the physical properties and the extent to which these values affect the following variables: performance coefficient, heat of the adsorption, and the mass concentration of the adsorbent of the heating cycle. By changing the generation temperature and the evaporator and condenser temperatures.The results indicate that the AC/water pair exhibits a superior temperature coefficient compared to the other studied pairs, reflecting its enhanced thermal responsiveness. Notably, the adsorption heat generated by the AC/water pair reached a maximum of 418 MJ, which is approximately three times higher than that of AC/methanol (173 MJ) and AC/ethanol (127.87 MJ). In terms of performance, the highest coefficients of performance (COP) were recorded as 0.682 at 140 °C for AC/water, 0.71 at 100 °C for AC/methanol, and 0.69 at 80 °C for AC/ethanol, Also, RMSE 0.0117 for LH, 0.0378 for AC-35. These outcomes underscore the remarkable potential of the AC/water pair, in particular, for advanced thermal energy systems and next-generation adsorption-based applications.