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Modelling and simulation of chemical reaction of porous MgCl2 pellets with NH3 by including impact of heat and mass transfer and structure change
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Date
2023-01-01
Author
Helvaci, Zeynep Karakaş
Karakaş, Gürkan
Uludağ, Yusuf
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The MgCl2–NH3 reactive system is investigated in terms of heat and mass transfer coupled with chemical reaction through numerical simulation. The reversible nature of the chemical reaction is captured by including adsorption and desorption terms in the rate expression simultaneously. The kinetic coefficients of the adsorption are directly adopted from the literature, while those for the desorption reaction are calculated based on the thermodynamic relations. The impact of changing pressure and pellet porosity are also investigated in the simulations. The initial temperature of the pellet is 300 K in all simulations. Temperature, NH3 pressure, and conversion distributions in the pellets, along with pellet swelling are obtained and presented as a function of time. The results indicated strong effects of heat transfer resistances in the pellets.
Subject Keywords
ammonia
,
chemical heat pump
,
Magnesium chloride
,
modelling
,
reaction kinetics
,
transport phenomena
URI
https://hdl.handle.net/11511/104754
Journal
Turkish Journal of Chemistry
DOI
https://doi.org/10.55730/1300-0527.3561
Collections
Department of Chemical Engineering, Article
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BibTeX
Z. K. Helvaci, G. Karakaş, and Y. Uludağ, “Modelling and simulation of chemical reaction of porous MgCl2 pellets with NH3 by including impact of heat and mass transfer and structure change,”
Turkish Journal of Chemistry
, vol. 47, no. 3, pp. 572–582, 2023, Accessed: 00, 2023. [Online]. Available: https://hdl.handle.net/11511/104754.