Functionally graded optimisation of adsorption systems with phase change materials

Abstract Adsorption phenomena are encountered in several engineering applications. One of its uses is the storage and transport gas form adsorption tanks. The exothermic nature process decreases capacity presenting an impetus to understand thermal characteristics process. Studies using mixtures phase change materials adsorbents tanks demonstrate potential improvements They also show that distribution adsorbent important. Thus, this work presents two approaches for optimising domain. first use a semi-analytic model determine best homogeneous material concentration vessel composition. other 2D axisymmetric perform FGM optimisation distribute tank. Results both models presented discussed different conditions. study shows that, cylindrical geometry, always, at least, marginally better than from model. However, demands more computing time increases complexity implementation results assembling. approach possible alternative systems with mixed adsorbents.