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Hydration reaction in a porous bed

Posted 1 déc. 2020, 09:14 UTC−5 Chemical, Heat Transfer, Chemical Reaction Engineering Version 5.5 0 Replies

Ben Odinot
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Hello everyone,

I am new to COMSOL and I working on a simulation of Thermochemical Energy Storage system for my master. The hydration reaction which needs to be simulated is as follows: K2CO3(s) + 1.5 H20(g) <=> K2CO3.H2O(s) + Heat

And with the following reaction model:

Where:

  • Alpha is the extent of conversion
  • Af is the pre-exponential factor in [1/min]
  • Ea is the activation energy in J/mol
  • R is the gas constant in J/kg/K
  • T is the temperature in K
  • p_w is the water vapour pressure in Pa
  • p_eq is the equilibrium water vapour pressure in Pa

I am currently using the Brinkman equations, the Transport of diluted species in porous media and the Chemistry modules. How can I model the conversion of a solid into another solid after adsorption of the water vapour?

Let me know if anything is unclear.

Thanks for any help!

Ben Odinot

0 Replies Last Post 1 déc. 2020, 09:14 UTC−5
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