TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION

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TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION ( temperature-swing-adsorption-processes-for-gas-separation )

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D. SAMPLE CALCULATIONS FOR LABORATORY SCALE MODELS This section describes sample calculations for the laboratory scale models. The laboratory scale model calculations are shown for t = 2 s after the start of the adsorption stage, for the axial midpoint of the custom adsorbent-coated microchannel, where the adsorption wave front is approximately located. The length of the channel is 0.22 m, while the applied pressure drop is 16 kPa. The description of the algebraic and differential parameters in this section for the laboratory scale models is analogous to that for the full process model. Figure D.1 shows the cross section of the microchannel schematic considered for modeling, whereas Figure D.2 shows the longitudinal cross section of the channel showing the possible location of the adsorption thermal wave. Because of the adsorption experiments in these experiments involve only a gaseous medium, drastic changes in properties and other variables as seen in case of the displacement stage of the full process model are absent. Nevertheless, Figure D.2 shows an exaggerated schematic of the progression of the adsorption thermal wave, which is present at 0.11 m from the channel inlet for a 0.22 m long channel. Figure D.1 Cross section of the microchannel assembly with surrounding insulation and temperature nodes. 198

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