الفهرس 
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Abstract
Also applying the sensitivity analysis technique to study investigate the
robustness of the model predictions.
The main purpose of this work is to study the effect of the CO2
concentration in the mixture between natural gas and CO2 gas at lab scale
unit and this is the practical part in this thesis.
The effect of CO2 can be appearing on the dew point of the outlet gas
concentration after the dehydration process and on the over all change of
the temperature of the process.
The theoretical part in this thesis focuses on the different methods of gas
dehydration process. Also short brief about another desiccant processes.
In the thesis testing the mathematical model by using MATLAB program
By assuming values for the diffusivity of water vapor (Di) to reduce the
variation between the lab scale data and simulated data.