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Forums
Engineering
Materials and Chemical Engineering
Modelling of two phase flow in packed bed (continued)
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[QUOTE="casualguitar, post: 6900498, member: 695787"] Here's an inital attempt - Assuming here that these variables are the ones we have operational control over: 1. Initial bed temperature 2. Inlet gas temperature 3. Bed pressure 4. Inlet CO2 concentration 5. Bed material It would be useful to know which values of each of the above variables lead to the largest amount of CO2 captured. We could simply run a parametric analysis here to see that I think it would be more useful though to know which values of each of the above variables lead to the largest amount of CO2 captured ##\textbf{per unit of energy input}## i.e. how much total energy input is required per unit mass of CO2 captured. In this packed bed system, we've got energy input in two forms: 1. Cooling of the packed bed 2. 'Pressurising' of the hot N2/CO2/H2O stream to pass it through the packed bed Note here we have been running the model at atmospheric pressure, but we could in theory run it at any pressure up to the triple point pressure (about 5atm), which is why I included energy input #2. So the total energy would be the sum of these (not defined properly yet). The 'total amount of CO2 captured' could be defined as the maximum amount of CO2 captured. We have data for the amount of CO2 deposited at each point in the bed at each point in time, so we could simply take the maximum value. Do you think the above is reasonable? If so I'll start defining the energy inputs properly. Very much open to the possibility of using other performance parameters at this stage if you think of any! [/QUOTE]
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Materials and Chemical Engineering
Modelling of two phase flow in packed bed (continued)
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